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ai research engineer kernel inference optimization 100 remote worldwide

EPAM Systems

<div><p>We are looking for a <b>Lead AI Agent Developer</b> to design, build, and operationalize production-grade AI agents, multi-agent workflows, and AI/ML solutions using Python, Azure AI Foundry, Semantic Kernel / Microsoft Agent Framework, LangGraph, LangChain, AutoGen, and Strands SDK. You will work alongside architects and data teams to take solutions from prototype to scalable, reliable production.</p><p><b>
Responsibilities</b></p><ul><li>
Design, build, and maintain production-grade AI agents and multi-agent workflows for enterprise use cases</li><li>
Integrate and operationalize AI/ML models and agent workflows into scalable production systems</li><li>
Implement orchestration using Semantic Kernel / Microsoft Agent Framework, LangGraph, LangChain, AutoGen, and/or Strands SDK</li><li>
Implement RAG, grounding, and prompt optimization to improve response quality and reduce hallucinations</li><li>
Integrate agents with internal and external systems via APIs and connectors</li><li>
Design and implement error handling, fallback flows, and escalation paths</li><li>
Perform testing and evaluation of agents and automation workflows</li><li>
Collaborate with architects and data teams to translate requirements into deployable AI solutions</li><li>
Support deployment, CI/CD, and release management (Azure DevOps)</li><li>
Monitor and continuously improve agent performance, reliability, and cost efficiency</li></ul><p><b>
Requirements</b></p><ul><li>
Proficiency in Python development for AI/agent solutions, with solid general scripting ability</li><li>
Hands-on experience building agents and multi-agent workflows with one or more orchestration frameworks: Semantic Kernel / Microsoft Agent Framework, LangGraph, LangChain, AutoGen, Strands SDK</li><li>
Expertise in Azure AI Foundry for building, deploying, and operating agents at scale (hosted agents, agent service, memory, evaluation)</li><li>
Solid understanding of LLM concepts: prompt engineering, RAG, grounding, tool/function calling, hallucination mitigation, and evaluation</li><li>
Skills in API integration (REST APIs, JSON, authentication via OAuth2 / API keys)</li><li>
Competency in designing agent behavior: state and memory management, tool use, error handling, fallback, and escalation paths</li><li>
Capability to collaborate with architects and data engineering teams to deliver scalable, production-grade solutions</li><li>
English proficiency at B2 level or higher</li></ul><p><b>
Nice to have</b></p><ul><li>
Background in Azure AI Services and the broader Azure stack (Blob Storage, Container Services)</li><li>
Experience with multi-cloud agent deployment (e.g., AWS Bedrock via Strands SDK)</li><li>
Familiarity with Model Context Protocol (MCP) for tool/connector integration</li><li>
Knowledge of LLMOps / MLOps: monitoring, evals, and cost/latency optimization for AI Agents</li><li>
Experience with vector databases, retrieval infrastructure for RAG and Docker</li><li>
Skills in Microsoft Graph API integration and delivering in enterprise or regulated/validated environments (e.g., GxP), including governance and observability tooling</li></ul><p><b>
We offer</b></p><ul><li>
CONTINUOUS UPSKILLING, LEARNING &amp; DEVELOPMENT<ul><li>
Diversity of assignments and projects</li><li>
Personal development plan</li><li>
Mentoring programs and leadership development</li><li>
Certification and professional development support</li><li>
Access to learning platforms including more than 2,500 internal courses and the LinkedIn Learning library with 20,000+ courses</li><li>
English courses taught by certified teachers</li></ul></li><li>
CORPORATE BENEFITS<ul><li>
Extra leave days</li><li>
Referral bonuses</li></ul></li><li>
COMPENSATION PACKAGE<ul><li>
Competitive compensation paid in USD</li><li>
Regular salary and performance reviews</li></ul></li><li>
MEDICAL &amp; HEALTHCARE<ul><li>
Private health insurance</li></ul></li><li>
WORKING ENVIRONMENT<ul><li>
Recreation office zones with tea, coffee and snacks</li><li>
Sports and game consoles</li><li>
IT equipment and Microsoft's Software Assurance Home Use Program (HUP)</li></ul></li></ul><p>
Please note that our Talent Attraction Team reviews applications and CVs submitted in English.</p><p>
</p><p>EPAM is a global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. We deliver globally and engage locally, making the future real for clients, partners, and employees. We are proud to be recognised by Forbes, Glassdoor, Newsweek, Time Magazine, Great Place to Work and kununu as a Most Loved Workplace around the world.</p></div>

Lead AI Agent Developer

YO IT Consulting

<div>
 <strong>
  Job Title:
 </strong>
 Angular Developer
 <br/>
 <br/>
 <strong>
  Job Type:
 </strong>
 Contractor
 <br/>
 <br/>
 <strong>
  Location:
 </strong>
 Remote
 <br/>
 <br/>
 <strong>
  Role Description
  <br/>
  <br/>
 </strong>
 As an Angular Engineer, you will work remotely on an hourly paid basis to review AI-generated Angular code, frontend architectures, and technical explanations, as well as produce high-quality reference implementations and step-by-step reasoning for complex engineering problems. You will assess solutions for correctness, clarity, accessibility, security, performance, and adherence to the prompt; identify issues in Angular change detection, RxJS streams, state management, routing, forms, SSR (Angular Universal), hydration, and bundle performance; fact-check technical information; write high-quality explanations and model solutions that demonstrate best practices; and rate and compare multiple AI responses based on correctness and reasoning quality. This fully remote, hourly paid contractor role is a fast-growing AI data services company that provides AI training data to many of the world&rsquo;s largest AI companies and foundation model labs&mdash;where your frontend expertise will directly help improve the world&rsquo;s premier AI models used by millions of developers worldwide. Important: There is no immediate project for this role; however, if qualified, you will be among the first experts we reach out to when relevant opportunities arise. This will also provide you with access to future projects available through our expert network.
 <br/>
 <br/>
 <strong>
  Your Profile
  <br/>
  <br/>
 </strong>
 <ul>
  <li>
   Bachelor&rsquo;s degree or higher in Computer Science, Software Engineering, or a closely related technical field (or equivalent practical experience).
  </li>
  <li>
   4+ years of professional experience building production web applications with Angular (Angular 12+ preferred; Angular 16/17+ a strong plus).
  </li>
  <li>
   Expert-level proficiency in TypeScript and Angular fundamentals: components, modules/standalone APIs, DI, services, pipes, directives, guards, and interceptors.
  </li>
  <li>
   Strong understanding of RxJS (observables, operators, multicasting, error handling, cancellation) and reactive UI patterns.
  </li>
  <li>
   Deep knowledge of Angular performance: change detection strategies (OnPush), async pipe patterns, zone.js considerations, signals (if applicable), trackBy, and rendering optimization.
  </li>
  <li>
   Experience with Angular routing, forms, and validation: Reactive Forms, custom validators, form performance, and UX patterns.
  </li>
  <li>
   Familiarity with SSR and deployment patterns: Angular Universal / SSR, hydration, caching, and security considerations.
  </li>
  <li>
   Experience with testing and quality: Jasmine/Karma or Jest, Angular Testing Library, Cypress/Playwright, linting, CI/CD.
  </li>
  <li>
   Minimum C1 English proficiency (written and spoken), with the ability to write clear technical explanations and follow detailed English-language guidelines.
  </li>
  <li>
   Proven experience conducting detailed code reviews and enforcing coding standards for maintainability, correctness, and accessibility.
  </li>
  <li>
   Previous experience with AI data training, annotation, or evaluating AI-generated technical content is a strong plus.
  </li>
  <li>
   Highly detail-oriented and systematic, with a methodical approach to evaluating reasoning quality and identifying subtle issues in complex UI code.
   <br/>
   <br/>
  </li>
 </ul>
 <strong>
  Key Responsibilities
  <br/>
  <br/>
 </strong>
 <ul>
  <li>
   Develop AI Training Content: Create detailed prompts across Angular topics and write high-quality reference answers to guide AI learning.
  </li>
  <li>
   Optimize AI Performance: Evaluate and rank AI responses to enhance correctness, clarity, accessibility, and performance.
  </li>
  <li>
   Ensure Model Integrity: Test AI models for inaccuracies or unsafe recommendations, validating reliability across real-world use cases.
  </li>
 </ul>
</div>


Angular Developer - Remote

Luxoft

<div><div><h5 class="jobSectionHeader"><b>Project description
</b></h5><p>We are seeking a Palantir Foundry &amp; AIP Engineer with hands-on experience across the full Foundry ecosystem and Palantir&rsquo;s Artificial Intelligence Platform (AIP). This role goes beyond data engineering: you will design, build, and operationalize AI-powered workflows, agents, and applications that drive tangible business outcomes. The ideal candidate is a self-starter, able to translate complex business needs into scalable technical solutions, and confident working directly with stakeholders to maximize the value of Foundry and AIP.
</p></div><div><h5 class="jobSectionHeader"><b>Responsibilities</b></h5>
<div><div><ul><li>Data &amp; Workflow Engineering: Design, develop, and maintain scalable pipelines, transformations, and applications within Palantir Foundry.
</li></ul></div><div><ul><li>AIP &amp; AI Enablement:
</li></ul></div><div><p>Support the design and deployment of AIP use cases such as copilots, retrieval workflows, and decision-support agents.
</p></div><div><p>Ground agents and logic flows using RAG (retrieval‐augmented generation) by connecting to relevant data sources, embedding/vector search, ontology content.
</p></div><div><p>Use Ontology-Augmented Generation (OAG) when needed: operational decision making where logic, data, actions and relationships are embedded in the Ontology.
</p></div><div><p>Collaborate with senior engineers on agent design, instructions, and evaluation using AIP&rsquo;s native features.
</p></div><div><ul><li>End-to-End Delivery: Work with stakeholders to capture requirements, design solutions, and deliver working applications.
</li></ul></div><div><ul><li>User Engagement: Provide training and support for business teams adopting Foundry and AIP.
</li></ul></div><div><ul><li>Governance &amp; Trust: Ensure solutions meet standards for data quality, governance, and responsible use of AI.
</li></ul></div><div><ul><li>Continuous Improvement: Identify opportunities to expand AIP adoption and improve workflow automation.
</li></ul></div></div></div><div><h5 class="jobSectionHeader"><b>Skills</b></h5>
<p>Must have
</p><div><div><p>Minimum 10 Years of experience in IT/Data.
</p></div><div><p>Minimum 5 years of experience as a Data Platform Engineer/Data Engineer.
</p></div><div><ul><li>2+ years of professional experience with the Palantir Foundry ecosystem (data integration, ontology, pipelines, applications).
</li></ul></div><div><ul><li>Strong technical skills in Python, PySpark, SQL, and data modelling.
</li></ul></div><div><ul><li>Practical experience using or supporting AIP features such as RAG workflows, copilots, or agent-based applications.
</li></ul></div><div><ul><li>Ability to work independently and engage directly with non-technical business users.
</li></ul></div><div><ul><li>Strong problem-solving mindset and ownership of delivery.
</li></ul></div></div><p>Nice to have
</p><div><div><ul><li>Familiarity with AIP Agent Studio concepts (agents, instructions, tools, testing).
</li></ul></div><div><ul><li>Exposure to AIP Evals and evaluation/test-driven approaches.
</li></ul></div><div><ul><li>Experience with integration patterns (APIs, MCP, cloud services).
</li></ul></div><div><ul><li>Consulting or applied AI/ML background.
</li></ul></div><div><ul><li>Experience in Abu Dhabi or the broader MENA region.
</li></ul></div></div></div><div><h5 class="jobSectionHeader"><b>Other</b></h5>
<div><div><div><p>Languages</p>
<p>English: C1 Advanced
</p></div></div><div><div><p>Seniority</p>
<p>Senior</p></div></div></div></div></div>
<br><div><div><div><p>Remote Turkey, Turkiye
</p></div><p>Req. VR-122803
</p></div><div></div><div><div><p>Python
</p></div><div><p>BCM Industry</p>
</div><div><p>12/06/2026
</p></div><div><p>Req. VR-122803</p></div></div></div><p></p>

Palantir Foundry Engineer

SIEGWERK

<div><div>Why Siegwerk?</div><div></div><div><br>
Siegwerk is one of the world&rsquo;s leading suppliers of Printing Inks and sustainable packaging solutions. <b>Right now, we are looking for a &quot; Senior Industrialization Engineer &quot;</b> <b>to join us in Istanbul Tuzla plant.</b></div><div></div><div><br>
This is an outstanding opportunity to make your mark with a genuine global leader in its field. We can offer you significant <b>flexibility</b> and <b>support </b>in a company focused on making a <b>positive impact</b> on the world. Siegwerk is poised to disrupt the global packaging industry; changing the way packaging is produced and consumed for the benefit of us all. At Siegwerk, you will have everything you need to help make that change.</div><div></div><div><br>
Join us, let&rsquo;s <b>Do it. With Heart.</b> Join us, let&rsquo;s <b>Do it. With Heart.</b></div><div></div><p><b><br>
Our Benefits &ndash; What We Offer You?</b></p><ul><li>
Employer-Paid Private Pension Plan (BES) &ndash; Full employer contribution to support your long-term financial well-being.</li><li>
Additional Leave Days &ndash; Including birthday leave, moving day leave, and administrative leave to support work&ndash;life balance.</li><li>
Employee Well Being &amp; Support Programs &ndash; Offering psychological support for employees and their families, along with well‑being seminars to enhance overall mental and emotional health.</li><li>
Global Learning Platform &ndash; Siegwerk Learning Hub &ndash; Unlimited access to more than 20,000 online learning modules worldwide, plus Speexx language training.</li><li>
Social Benefits &ndash; Marriage allowance, child allowance, and an annual Ramadan market gift card.</li><li>
Corporate Benefits Platform &ndash; Exclusive discounts and special offers from partner brands.</li><li>
Multisport Card &ndash; Access to a wide network of gyms, studios, and wellness facilities at a discounted rate.</li></ul><div></div><p><b><br>
Your Tasks &ndash; What You can expect as </b><b>Senior Industrialization Engineer</b><b>?</b></p><ul><li>
Act as the central and accountable contact person for all industrialization and scale‑up activities from laboratory to full‑scale production.
</li><li>Serve as the main technical interface for Supply Chain Management (SCM) regarding non‑conforming or rejected batches, root‑cause investigations, and corrective actions.
</li><li>Lead and support cost‑saving initiatives, process optimization measures, and Continuous Improvement Projects (CIP) in collaboration with SCM and Operations.
</li><li>Test, validate, and assess new formulations and process concepts using laboratory‑scale grinding and dispersing equipment.
</li><li>Industrialize and implement new formulations and processes on the shop floor together with SCM Process Engineers.
</li><li>Plan, execute, and closely monitor scale‑up trials and first industrial batches to ensure stable, reproducible, and efficient production.
</li><li>Provide technical support to Technical Development (TD) to ensure smooth transfer of innovations into manufacturing.
</li><li>Support Quality Control (QC) in defining and aligning specifications that meet customer and regulatory requirements while remaining realistic and achievable in production.
</li><li>Contribute to process standardization, documentation, and knowledge transfer across sites where applicable.
</li><li>Actively promote Siegwerk&rsquo;s standards for safety, sustainability, quality, and operational excellence in all activities.</li></ul><div></div><p><b><br>
Your Profile &ndash; What do You bring as </b><b>Senior Industrialization Engineer</b><b>?</b></p><ul><li>
University degree in Chemistry or Chemical Engineering
</li><li>Professional experience in manufacturing within the coatings, inks, or related process industries (strongly preferred)
</li><li>Solid expertise in grinding and dispersing processes, ideally with hands‑on experience in industrial‑scale production environments
</li><li>Good understanding of plant equipment, production technologies, and manufacturing process flows
</li><li>Proven laboratory experience and confidence in bridging lab‑scale development with industrial reality
</li><li>Strong analytical and problem‑solving mindset with the ability to work independently in a fast‑paced environment
</li><li>A collaborative, hands‑on, and results‑oriented personality with excellent communication skills
</li><li>High level of flexibility, resilience, and ownership mentality
</li><li>Proficiency in spoken and written English; additional languages are an advantage</li></ul><div></div><p><b><br>
Are you interested?</b></p><p>
To apply for this position please use Talent@SW.</p></div><p></p>

Senior Industrialization Engineer

Speechify

<div><p>The mission of Speechify is to make sure that reading is never a barrier to learning.</p>
<p>
Over 50 million people use Speechify's text-to-speech products to turn whatever they're reading &ndash; PDFs, books, Google Docs, news articles, websites &ndash; into audio, so they can read faster, read more, and remember more. Speechify's text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its App of the Day.</p>
<p>
Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting &ndash; Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies.</p>
<p><b>
Overview</b></p>
<p>
With the growth of our iOS app, being the #18 productivity app in the App Store category and also our recent recognition as Apple's 2025 Design Award for inclusivity, we find the need for a Senior iOS Engineer to help us support the new user base as well as work on new and exciting projects to push our missing forward.
</p><p>This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, passionate about making product decisions, and has experience building great user experiences that delight users.</p>
<p>
We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount.</p>
<p>
Our interview process involves several technical interviews and we aim to complete them within 1 week.</p>
<p><b>
What Yo</b><b>u'</b><b>ll Do</b></p>
<ul>
<li>Opportunity to lead key engineering and product decisions</li>
<li>Actively shipping production code for the Speechify iOS app</li>
<li>Work within a dedicated product team</li>
<li>Participate in product discussions to shape the product roadmap</li>
<li>Maintain and enhance the existing complex app architecture</li>
</ul>
<p><b>An Ideal Candidate Should Have</b></p>
<ul>
<li>Experience. You've worked on products that scaled to a large user base</li>
<li>Track record. You have worked on various products from inception to decent traction. You have been responsible for engineering the product</li>
<li>Customer obsession. We expect every team member whose responsibilities directly impact customers to be constantly obsessed about providing the best possible experience</li>
<li>Product thinking. You make thoughtful decisions about the evolution of your product and support internal teams and designers into taking the right direction</li>
<li>Speed. You work quickly to generate ideas and know how to decide which things can ship now and what things need time</li>
<li>Focus. We're a high-growth startup with a busy, remote team. You know how and when to engage or be heads down</li>
<li>Technical skills. Swift, SwiftUI</li>
</ul>
<p><b>Technical Requirements:</b></p>
<ul>
<li>Swift Programming Language</li>
<li>SwiftUI experience</li>
<li>Experience in Multithreading Programming</li>
<li>Working with CI/CD infrastructure</li>
<li>Experience with Fastlane</li>
<li>SOLID principles, the ability to write every single class according to SOLID</li>
<li>Experience with Git and understanding of different Git strategies</li>
</ul>
<p><b>What We offer:</b></p>
<ul>
<li>A fast-growing environment where you can help shape the company and product</li>
<li>An entrepreneurial crew that supports risk, intuition, and hustle</li>
<li>The opportunity to make a big impact in a transformative industry</li>
<li>A competitive salary, a collegiate atmosphere, and a commitment to building a great asynchronous culture</li>
<li>Work on a product that millions of people use and where daily feedback includes users sharing that they cried when they first found the product because it was so impactful on their lives</li>
<li>Support people with learning differences like Dyslexia, ADD, Low Vision, Concussions, Autism, and Second Language Learners, and give reading superpowers to professionals all over the world</li>
<li>Work in one of the fastest growing sectors of tech: Intersection of Artificial Intelligence and Audio</li>
</ul>
<p><b>Think you're a good fit for this job?</b></p>
<p>
Tell us more about yourself and why you're interested in the role when you apply.
<br>
And don't forget to include links to your portfolio and LinkedIn.</p>
<p><b>
Not looking but know someone who would make a great fit?</b></p>
<p>
Refer them!</p>
<p><b>
Speechify is committed to a diverse and inclusive workplace.</b></p>
<p>
Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.</p></div>

Software Engineer, iOS Core Product - Ankara, Turkey

Cytiva

<div><div><div>Job Description</div></div><div><div><div><div><div><div><div><div><div><p><b>
Bring more to life.</b></p><p></p><p>
Are you ready to accelerate your potential and make a real difference within life sciences, diagnostics and biotechnology?</p><p></p><p>
At Cytiva, one of Danaher&rsquo;s 15+ operating companies, our work saves lives&mdash;and we&rsquo;re all united by a shared commitment to innovate for tangible impact.</p><p></p><p>
You&rsquo;ll thrive in a culture of belonging where you and your unique viewpoint matter. And by harnessing Danaher&rsquo;s system of continuous improvement, you help turn ideas into impact &ndash; innovating at the speed of life.</p><p></p><p>
Working at Cytiva means being at the forefront of providing new solutions to transform human health. Our incredible customers undertake life-saving activities ranging from fundamental biological research to developing innovative vaccines, new medicines, and cell and gene therapies.</p><p></p><p>
At Cytiva you will be able to continuously improve yourself and us &ndash; working on challenges that truly matter with people that care for each other, our customers, and their patients. Take your next step to an altogether life-changing career.</p><p></p><p>
Learn about the Danaher Business System which makes everything possible.</p><p></p><p>
The <b>Field Service Engineer (f/d/m) </b>is responsible for:</p><ul><li><p>
Conducts service, repair and/or installation of products or IT solutions at customer site, including electrical and mechanical testing, in accordance with maintenance contracts.</p></li><li><p>
Diagnoses system failures and determines most cost-effective solution. Escalates complex issues to greater level of technical support or quality reporting system.</p></li><li><p>
Responds to customer support calls within an assigned territory.</p></li></ul><p></p><p>
This position reports to the Zone Service Manager and will be fully remote.</p><p></p><p><b>
What you will do:</b></p><ul><li><p>
Proactive appointment planning for service visits with support from customer care team.</p></li><li><p>
Installation, preventative maintenance and repair of our standard research and process systems as well as customized process systems.</p></li><li><p>
Performance of qualification and requalification of Cytiva equipment in GMP environment.</p></li></ul><p></p><p><b>
Who you are:</b></p><ul><li><p>
Bachelor or Engineer degree in mechanical/electronical engineering, biomedical engineering or mechatronics or adjacent field.</p></li></ul><ul><li><p>
Fluent in Turkish and English language, other European language or arabic skills will be a plus.</p></li><li><p>
High interest for technique and analytical skills, problem solving mindset</p></li></ul><p></p><p><b>
Travel, Motor Vehicle Record &amp; Physical/Environment Requirements:</b></p><ul><li><p>
Willingness for regular travel (Turkey &amp; International) incl. regular overnight stays</p></li><li><p>
Valid driving licence B.</p></li><li><p>
Ability to lift, move or carry equipment up to 25 kg.</p></li></ul><p></p><p><b>
It would be a plus if you also possess previous experience in:</b></p><ul><li><p>
Chromatography techniques.</p></li><li><p>
Bio-reactors.</p></li></ul></div></div></div></div></div></div></div></div></div><p></p><p>
Join our winning team today. Together, we&rsquo;ll accelerate the real-life impact of tomorrow&rsquo;s science and technology. We partner with customers across the globe to help them solve their most complex challenges, architecting solutions that bring the power of science to life.</p><p></p><p>
For more information, visit www.danaher.com.</p></div>

Field Service Engineer - Biotechnology

Ruby Labs

<div><h1 class="jobSectionHeader"><b>About us</b></h1><p>
Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/</p><p></p><h1 class="jobSectionHeader"><b>
About the role</b></h1><p>
At Ruby Labs we are looking for a Senior AI Engineer to own and drive the quality, reliability, and evolution of our AI systems in production.</p><p>
This is a high-ownership role. You will be responsible for end-to-end delivery of major AI features, production stability of AI systems, and data-driven experimentation using tools like Langfuse, Mixpanel and OpenRouter. You&rsquo;ll work in a modern stack built on Next.js, TypeScript, Node.js, and Redis, collaborating closely with product, growth, data, and billing teams. Increasingly, this includes building agentic, tool-using AI systems &mdash; defining clean tool contracts (including MCP-based tools) and orchestrating how AI interacts with internal services and business systems.</p><p>
Our engineering organization uses a squad-based structure. You will operate within an AI engineering squad, contributing as a senior technical voice and driving engineering quality within your area of the product.</p><p></p><h1 class="jobSectionHeader"><b>
Key Responsibilities</b></h1><ul><li><p>
Take complete ownership and deliver major AI engineering features within agreed timelines.</p></li><li><p>
Own AI output quality, structure, and predictability across all user-facing AI interactions.</p></li><li><p>
Design, implement, and maintain output-type-based AI systems, including segmentation, routing, and enforcement.</p></li><li><p>
Ensure consistent output structure and formatting across different LLMs for the same request type.</p></li><li><p>
Integrate and orchestrate multiple LLM providers via OpenRouter, managing model selection, fallback strategies, and cost optimisations.</p></li><li><p>
Design and orchestrate tool-using and agentic AI workflows, defining clean tool contracts (including MCP-based tools), function-calling interfaces, and reliable AI-to-system integrations.</p></li><li><p>
Build and maintain complex, multi-step LLM workflows, including with orchestration frameworks such as LangChain or LlamaIndex, for advanced reasoning, context reuse, and retrieval.</p></li><li><p>
Design and manage production prompt systems with dynamic prompting, context injection, and conditional logic.</p></li><li><p>
Own the deployment and release of LLM experiments, prompt management, and Langfuse-based evaluation pipelines.</p></li><li><p>
Run A/B tests across models, analyse results, and present data-driven impact assessments of AI features and experiments.</p></li><li><p>
Monitor AI system metrics, quality signals, latency, and release health using Langfuse and other observability tools.</p></li><li><p>
Deep-debug complex LLM chains using Langfuse traces, identifying bottlenecks and optimising for cost, latency, and context-window usage, and build output-scoring systems to root-cause hallucinations and logic errors.</p></li><li><p>
Write clean, scalable, and maintainable TypeScript code across the Next.js and Node.js stack.</p></li><li><p>
Build reliable backend logic for AI systems, with strong error handling, request validation, fallback flows, and predictable behaviour in production, including reliable tool execution and AI-to-service integrations.</p></li><li><p>
Ensure high code quality through testing, code reviews, and clear engineering standards.</p></li><li><p>
Monitor, troubleshoot, and improve production performance, reliability, and system health.</p></li><li><p>
Drive maintainability and technical quality through solid architecture, refactoring, and disciplined release practices.</p></li></ul><p></p><h1 class="jobSectionHeader"><b>
Qualifications</b></h1><ul><li><p>
6+ years of backend/full-stack software engineering experience, including production-grade TypeScript/Node.js. Experience with Next.js and/or Python is a plus.</p></li><li><p>
2+ years of experience building AI/LLM systems in production. Less experience may be considered for exceptional candidates.</p></li><li><p>
Deep hands-on experience working with LLM APIs (OpenAI, Anthropic, or similar) in production environments.</p></li><li><p>
Experience with Agentic AI, multi-agent orchestration, tool-based workflows (function calling/tool execution), and/or RAG pipelines, including indexing, retrieval, and re-ranking.</p></li><li><p>
Experience with LLM observability tools such as Langfuse, LangSmith, or similar platforms.</p></li><li><p>
Experience with AI gateways and model routing solutions, such as OpenRouter or equivalent technologies.</p></li><li><p>
Solid understanding of Redis and relational databases, such as PostgreSQL.</p></li><li><p>
Exceptional ownership mindset and personal responsibility for engineering quality and delivery.</p></li></ul><p></p><h1 class="jobSectionHeader"><b>
Nice to have</b></h1><ul><li><p>
Experience with AI-centered development tools such as Cursor, Claude Code, Windsurf, or similar platforms.</p></li><li><p>
Familiarity with evaluation frameworks, including LLM-as-a-judge, RAGAS, or similar approaches.</p></li><li><p>
Experience working in high-pressure startup environments with rapid product iteration cycles.</p></li><li><p>
Experience with MCP (Model Context Protocol), including building MCP servers/clients or designing tool contracts for AI agents.</p></li><li><p>
Experience with edge and serverless runtimes, such as Cloudflare Workers, and supporting services including KV, Durable Objects, Queues, R2, and D1.</p></li><li><p>
Experience with payments, billing and checkout flows, or orchestration platforms.</p></li><li><p>
Practical experience fine-tuning models for domain-specific tasks or achieving strict JSON/schema compliance.</p></li><li><p>
Working proficiency in Python for data science, evaluation scripts, or AI tooling.</p></li></ul><p></p><h1 class="jobSectionHeader"><b>
Location</b></h1><p>
Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately &plusmn; 4 hours of CET. This ensures optimal collaboration and communication during working hours.</p><p></p><h1 class="jobSectionHeader"><b>
Benefits</b></h1><p>
Discover the perks of being part of our vibrant team! We offer:</p><ul><li><p><b>
Remote Work Environment:</b> Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
</p></li><li><p><b>Unlimited PTO:</b> Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.
</p></li><li><p><b>Paid National Holidays:</b> Celebrate and relax on national holidays with paid time off to unwind and recharge.
</p></li><li><p><b>Company-provided MacBook:</b> Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.
</p></li><li><p><b>Flexible Independent Contractor Agreement:</b> Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere. Read more about it here: https://docs.google.com/document/d/1tzxGX4Uu7Ts_HCLFXESKLnKaaBfVCPf1f9AYZPrkjJM/preview?tab=t.0</p></li></ul><p>
Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!</p><p></p><h1 class="jobSectionHeader"><b>
Interview Process</b></h1><p>
After submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received. If we see a potential fit, we proceed with the following steps:</p><ul><li><p>
Recruiter Screening (40 minutes)</p></li><li><p>
Technical Interview (60 minutes)</p></li><li><p>
Second Interview (30 minutes)</p></li><li><p>
Final Interview (20 minutes)</p></li></ul><p></p><h1 class="jobSectionHeader"><b>
Life at Ruby Labs</b></h1><p>
At Ruby Labs, we move fast, aim high, and expect the same from our team. We&rsquo;re not here to play small&mdash;we&rsquo;re here to build, grow, and win. That means we look for people who are ambitious, driven, and ready to give their best every single day.</p><p>
This is a place for individuals who thrive under pressure, embrace challenges, and see opportunity in every obstacle. If you&rsquo;re hungry to achieve, motivated by impact, and want to grow at the speed of your own ambition, Ruby Labs offers the platform to make it happen.</p><p>
Here, effort is matched with reward. We recognize those who go all in and deliver results, and we create space for people who want more&mdash;more responsibility, more growth, and more success.</p><p></p><p>
#LI-Remote</p></div>

Senior AI Software Engineer

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