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.net software developer – web & api Jobs in Karachi

.net software developer – web & api

software engineer backend

Hul Hub Pakistan

<div>
 
 Associate Software Engineer - BackendJob Description
 
 
 
 <ul>
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 Assist in designing and developing applications using PHP/Dot Net.
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 Write clean, scalable, and efficient code under the guidance of senior developers.
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 Participate in code reviews and ensure best practices are followed.
 </li>
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 Troubleshoot, test, and maintain applications to ensure optimal performance.
 </li>
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 Collaborate with cross-functional teams to understand project requirements and assist in their implementation.
 </li>
 <li>
 Participate in the development of web services, APIs, and database solutions.
 </li>
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 Assist in the documentation of software processes and solutions.
 </li>
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 Learn and keep up-to-date with new technologies and industry trends.
 
 
 </li>
 </ul>
 
 Qualifications:
 
 
 
 <ul>
 <li>
 Bachelor's degree in Computer Science or similar relevant field.
 
 
 </li>
 </ul>
 
 Job Specifications
 
 
 
 <ul>
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 Strong Knowledge Of OOPS and Data Structure,
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 Basic knowledge of .NET/PHP frameworks.
 </li>
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 Familiarity with web technologies such as HTML, CSS, and JavaScript is a plus.
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 Understanding of databases, especially SQL Server, and familiarity with ORM tools like Entity Framework will be preferred.
 </li>
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 Experience with version control tools like Git is desirable.
 
 
 </li>
 </ul>
 
 Perks &amp; Benefits:
 
 
 
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 Market competitive salary package
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 Career growth opportunities
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 Health care benefits
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 Provident Fund
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 Subsidized Transport facility (subject to availability)
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 Company-paid certifications
 
 
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 </ul>
 
 Location:
 
 Karachi, Sindh - Pakistan
</div>

Associate Software Engineer - Backend

Pakistan Single Window

<div>Design &amp; Develop Software Architecture and applications as per business requirements following best practices.
Troubleshoot code-level problems quickly and efficiently
Provide architectural blueprints and technical leadership to our development teams
Evaluate and recommend tools, technologies, and processes to ensure the highest quality product platform
Collaborate with cross-functional teams in technology and product roadmap discussions
Participate in code review, refactoring, and improvement. 
Requirements 
<ul><li>
1+ years&rsquo; experience designing and executing enterprise-class products</li><li>
3+ years&rsquo; experience in software development</li><li>
Excellent proficiency &amp; hands-on technical leadership in the following technologies:
</li><li>Microsoft Technologies: .NET / .NET Core, Web Services
</li><li>Web technologies: ReactJS, Typescript, Webforms, KenduUI, CSS, HTML
</li><li>Enterprise Applications: Microservices, Containers, Service orchestration
</li><li>Database: SQL Server o Others: Git, GitFlow, Linux</li><li>
Ability to perform comfortably in a fast-paced, deadline-oriented, agile environment &bull; Strong Problem-solving, debugging, and analytical skills.</li></ul></div>

Senior Software Engineer - II (Backend) | Contractual

Confiz

<div>We are looking for a PSE /Technical Lead to drive the BackEnd team of a new unified web platform and its first production module: a Data Quality Rules engine. The platform stack is centered on FastAPI, React, PostgreSQL, Snowflake, Microsoft Entra ID, and AWS, with infrastructure managed through Terraform and CI/CD. The PSE will align backend and frontend contracts, review implementation quality, and guide delivery across authentication, RBAC, rules engine design, workflow automation, notifications, reporting, and AI services. This role aligns directly with the project&rsquo;s documented ownership model.
Key responsibilities
<ul><li>Implement and own the target architecture for a modular monolith platform built on FastAPI and React.</li>
<li>Establish API contract standards, request/response conventions, pagination patterns, and error handling across modules.</li>
<li>Implement solution design for Entra ID SSO, JWT validation, RBAC enforcement, and secure role mapping.</li>
<li>Guide the design of the rules engine, including JSON-based rule schema, execution model, versioning, sandbox testing, and migration path from legacy SQL rules.</li>
<li>Oversee backend architecture for workflows, audit trail, comments, notifications, SLA logic, exports, and background sync.</li>
<li>Conduct code reviews across backend and frontend tracks and enforce engineering standards.</li>
<li>De-risk key delivery items early, especially Entra + AWS auth flow, schema design, and legacy rule migration. The roadmap explicitly highlights these as major risks.</li>
<li>Work with product and client stakeholders to turn discovery findings into implementation-ready technical designs.</li>
</ul>
Required skills
<ul><li>7+ years in software engineering, with strong experience in backend/platform architecture</li>
<li>2+ years in a lead, or PSE role</li>
<li>Strong experience with Python and API-centric backend systems</li>
<li>Hands-on experience with FastAPI or comparable modern Python web frameworks</li>
<li>Strong experience designing systems with PostgreSQL &bull; Experience integrating with cloud data platforms such as Snowflake</li>
<li>Experience with Microsoft Entra ID / Azure AD, OIDC, JWT, and RBAC patterns</li>
<li>Experience with AWS, containerized deployments, and infrastructureas-code</li>
<li>Strong understanding of CI/CD, observability, application security, and production readiness</li>
<li>Experience defining system contracts and leading cross-functional technical delivery</li>
<li>Should be comfortable using modern AI tools like claude and cursor and able to extract maximum productivity with them .</li>
</ul>
Preferred skills
<ul><li>Experience designing configurable rules engines or workflow/statemachine systems</li>
<li>Experience migrating legacy SQL/business logic into structured application services</li>
<li>Familiarity with React/TypeScript frontend architecture</li>
<li>Experience with AI platform services, prompt registries, API logging, and safe human-in-the-loop AI patterns</li>
<li>Experience in data governance, auditability, and regulated enterprise environments</li>
<li>Exposure to Prompy Engineering</li>
</ul>
We have an amazing team of 700+ individuals working on highly innovative enterprise projects &amp; products. Our customer base includes Fortune 100 retail and CPG companies, leading store chains, fast-growth fintech, and multiple Silicon Valley startups.
What makes Confiz stand out is our focus on processes and culture. Confiz is ISO 9001:2015 (QMS), ISO 27001:2022 (ISMS), ISO 20000-1:2018 (ITSM), ISO 14001:2015 (EMS), ISO 45001:2018 (OHSMS) Certified. We have a vibrant culture of learning via collaboration and making workplace fun.
People who work with us work with cutting-edge technologies while contributing success to the company as well as to themselves.
To know more about Confiz Limited, visit: https://www.linkedin.com/company/confiz-pakistan/</div>

Technical Lead - Backend (FastAPI, React, PostgreSQL, Snowflake, Microsoft Entra ID, and AWS)

Symits HR

<div><h3 class="jobSectionHeader">Work Type</h3><ul><li>
On-site</li></ul><h3 class="jobSectionHeader">
Industry</h3><ul><li>
Not Specified</li></ul><h3 class="jobSectionHeader">
POSITION SUMMARY:</h3>
We are looking for a Principal Engineer to join our growing engineering team and play a critical role in shaping the technical foundation of our product. As we scale, we are focused on improving development speed, code quality, and architectural consistency. This role is ideal for someone who combines deep technical expertise with strong engineering judgement and can bring structure to fast-moving teams.
Key Responsibilities<ul><li>Drive engineering excellence by enforcing coding standards, best practices, and clean architecture principles</li><li>Guide the team on efficient implementation approaches with a strong focus on performance and scalability</li><li>Design and refine core business logic with clarity, simplicity, and extensibility in mind</li><li>Conduct thorough pull request reviews ensuring high-quality, maintainable, and scalable code</li><li>Reduce codebase fragmentation and bring consistency across services and repositories</li><li>Establish and promote reusable patterns and abstractions</li><li>Take ownership of evolving the overall system architecture into a more structured and cohesive design</li></ul>
Core Technical Expectations<ul><li>Strong command over Data Structures &amp; Algorithms with the ability to apply them in real-world systems</li><li>Deep understanding and practical application of SOLID Principles</li><li>Hands-on experience with Design Patterns (e.g., Factory, Strategy, Observer, Repository, etc.)</li><li>Ability to write clean, modular, and extensible code</li><li>Strong grasp of system design, including scalability, fault tolerance, and performance optimization</li><li>Proven ability to identify and eliminate technical debt</li></ul>
Technical Requirements<ul><li>Deep hands-on experience with PHP and Laravel</li><li>Strong expertise in MySQL, including query optimization and database design</li><li>Solid understanding of backend architecture and API design</li><li>Experience working with large-scale or growing codebases</li><li>Familiarity with modern development workflows, version control, and CI/CD</li></ul>
Nice to Have<ul><li>Experience with the MERN stack (MongoDB, Express, React, Node.js)</li><li>Exposure to microservices architecture and distributed systems</li><li>Experience in refactoring and scaling existing systems</li><li>Familiarity with performance tuning, caching, and observability</li></ul>
What You&rsquo;ll Impact<ul><li>Faster and more predictable development cycles</li><li>A cleaner, more maintainable, and scalable codebase</li><li>Reduced production risks and improved system reliability</li><li>A stronger engineering culture focused on quality and ownership</li></ul>
Why Join Us?<ul><li>High-impact role with ownership over engineering direction and standards</li><li>Opportunity to shape systems at scale</li><li>Work in an environment focused on building fast, but building right</li></ul>
If you&rsquo;re someone who cares deeply about clean code, strong architecture, and long-term scalability, we&rsquo;d love to connect.</div>

Principal Engineer (Backend / System Architecture)

<div>
 We are hiring a Senior Backend Developer to build the backend foundation and core services for a Data Quality Rules platform. The backend is the central delivery track for this project and includes FastAPI services, Entra ID auth integration, RBAC, PostgreSQL data model, Snowflake read integration, configurable rules execution, workflow automation, notifications, sync jobs, exports, and AI service APIs. The roadmap explicitly positions the Python developer as the full backend owner for server-side code, infrastructure collaboration, deployment, and tests.
 
 
 
 Key Responsibilities
 
 
 
 <ul>
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 Build and maintain backend services using Python and FastAPI.
 </li>
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 Implement authentication and authorization, including JWT validation middleware, role extraction, and policy-based RBAC enforcement.
 </li>
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 Design and implement PostgreSQL schemas, SQLAlchemy models, Alembic migrations, and audit logging.
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 Develop APIs for rules, exceptions, comments, notifications, assignments, dashboards, and admin functions.
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 Build the configurable rules engine, including rule configuration parsing, validation logic, execution logging, and rule testing sandbox.
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 Integrate with Snowflake for read-only validation queries and with Postgres-to-Snowflake background sync for downstream reporting.
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 Migrate representative batches of legacy SQL rules into the new rule engine and validate result parity.
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 Build workflow and collaboration services including state transitions, threaded comments, @mentions, notification records, and SES email events.
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 Implement reporting/export features and SLA logic.
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 Support AI services APIs for completion, extraction, summarization, anomaly detection suggestions, and logging.
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 Write automated tests and participate in performance tuning, monitoring, and production hardening.
 
 
 </li>
 </ul>
 
 Required Skills
 
 
 
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 5+ years of backend engineering experience
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 Strong Python expertise
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 Strong hands-on experience with FastAPI, Flask, or Django APIs
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 Strong SQL and PostgreSQL experience
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 Experience with ORMs and migrations, ideally SQLAlchemy and Alembic
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 Experience building secure APIs with auth, RBAC, and input validation
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 Experience with background jobs, schedulers, queues, or worker processes
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 Experience integrating with cloud services and CI/CD pipelines
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 Ability to own backend features end-to-end, from schema to API to deployment
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 Comfortable using modern AI tools like claude and cursor and able to extract maximum productivity with them . .
 
 
 </li>
 </ul>
 
 Preferred Skills
 
 
 
 <ul>
 <li>
 Experience with Snowflake
 </li>
 <li>
 Experience with rules engines, configurable business logic, or policy systems
 </li>
 <li>
 Experience migrating legacy SQL/stored procedure logic into servicebased architectures
 </li>
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 Experience with AWS services such as ECS, RDS, S3, Secrets Manager, SES, and CloudWatch
 </li>
 <li>
 Familiarity with Terraform and infrastructure-as-code
 </li>
 <li>
 Familiarity with AI/LLM service integrations and structured API logging
 </li>
 <li>
 Experience working in enterprise internal tools, workflow systems, or data quality platform
 
 
 </li>
 </ul>
 We have an amazing team of 700+ individuals working on highly innovative enterprise projects &amp; products. Our customer base includes Fortune 100 retail and CPG companies, leading store chains, fast-growth fintech, and multiple Silicon Valley startups.
 
 
 What makes Confiz stand out is our focus on processes and culture. Confiz is
 
 ISO 9001:2015
 
 (QMS),
 
 ISO 27001:2022
 
 (ISMS),
 
 ISO 20000-1:2018
 
 (ITSM),
 
 ISO 14001:2015
 
 (EMS),
 
 ISO 45001:2018
 
 (OHSMS) Certified. We have a vibrant culture of learning via collaboration and making workplace fun.
 
 
 People who work with us work with cutting-edge technologies while contributing success to the company as well as to themselves.
 
 
 To know more about Confiz Limited, visit: https://www.linkedin.com/company/confiz-pakistan/
</div>

Principal Backend Engineer — Python / FastAPI

Beam AI

<div>
 Beam AI builds self-learning AI agents and an organisational operating system where intelligence grows through autonomous discovery. We help enterprises evolve from AI-curious to AI-native with automation that delivers results today and learns to improve itself over time. Join us in shaping a future where AI continuously discovers, adapts, and makes work more meaningful. To learn more, visit https://beam.ai/.
 
 
 
 About The Team
 
 
 
 Beam's engineering team is building the core infrastructure for self-learning agents, turning AI into reliable, production-grade systems. We work across the full stack, from frontend to infra, solving for real-time orchestration, tool integration, and complex workflow execution. This is a high-trust, high-impact environment where engineers move fast, ship often, and help shape both the product and the platform as we scale. If you care about building with clarity, speed, and depth, you'll do your best work here.
 
 
 
 About The Role
 
 
 
 We're looking for a Senior Backend Engineer to join our team in Karachi. In this role, you'll build and scale the systems that power Beam's agentic platform, designing APIs, managing data flows, and ensuring our infrastructure can handle real-world complexity at scale.
 
 
 You'll work closely with frontend, product, and infrastructure teams to translate requirements into robust backend systems. This role is hands-on and execution-focused, you'll be writing production code, solving performance challenges, and contributing to architectural decisions that directly impact how our platform evolves.
 
 
 
 Responsibilities
 
 
 
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 Design and build scalable backend systems that support real-time workflows and agent orchestration
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 Develop APIs and services that are secure, reliable, and easy to integrate across the platform
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 Write clean, maintainable code with strong documentation and thoughtful design patterns
 </li>
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 Optimize system performance to handle high data volumes and concurrent usage
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 Build and manage data storage layers, including relational and NoSQL databases, caching, and search systems
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 Collaborate with frontend teams using OpenAPI specs to enable seamless integrations
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 Review code, identify issues early, and maintain a high bar for engineering quality
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 Troubleshoot production issues and ensure system reliability under real-world conditions
 </li>
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 Contribute to improving development workflows, tooling, and team efficiency
 </li>
 <li>
 Stay current with backend technologies and apply new ideas where they create leverage
 
 
 </li>
 </ul>
 
 Requirements
 
 
 
 <ul>
 <li>
 Bachelor's degree in Computer Science, Software Engineering, or a related field
 </li>
 <li>
 4-5 years of experience building scalable backend systems or platforms
 </li>
 <li>
 Strong proficiency in at least one backend language (TypeScript/Node.js, Python, or Golang)
 </li>
 <li>
 Solid experience with SQL (PostgreSQL/MySQL) and NoSQL (MongoDB/DynamoDB) databases
 </li>
 <li>
 Experience working with cloud platforms such as AWS, Azure, or Google Cloud
 </li>
 <li>
 Familiarity with containerization tools like Docker and Kubernetes
 </li>
 <li>
 Experience using caching systems such as Redis
 </li>
 <li>
 Strong understanding of microservices architecture and event-driven systems
 </li>
 <li>
 Ability to collaborate effectively across teams and communicate technical ideas clearly
 </li>
 <li>
 Self-driven, detail-oriented, and motivated to build high-quality systems
 
 
 </li>
 </ul>
 
 Nice to Have
 
 
 
 <ul>
 <li>
 Experience with NestJS for building backend services
 </li>
 <li>
 Familiarity with CI/CD pipelines (GitHub Actions, Jenkins, AWS CodePipeline, etc.)
 </li>
 <li>
 Experience with message brokers and queueing systems (Kafka, RabbitMQ, AWS SNS/SQS)
 </li>
 <li>
 Exposure to infrastructure-as-code tools like Terraform, AWS CDK, or Pulumi
 </li>
 <li>
 Understanding of domain-driven design (DDD) and test-driven development (TDD)
 </li>
 <li>
 Strong grasp of SOLID principles in software design
 </li>
 <li>
 Experience working in Agile or Scrum environments
 
 
 </li>
 </ul>
 
 Benefits
 
 
 
 At Beam, we're building an environment where ambitious people can do their best work, with clarity, purpose, and room to grow. We're thoughtful about what we build, how we work, and who we hire. The problems we're solving are real. The systems we're building are complex. And the people here care deeply, about craft, about speed, and about doing work that actually matters. You won't find rigid hierarchies or endless process here. You'll find high trust, high standards, and a team driven by curiosity, ownership, and long-term thinking.
 
 
 Our culture is shaped by our values in action:
 
 
 <ul>
 <li>
 AI-native thinking: Every teammate thinks in agentic workflows, uses AI tools daily, and looks for leverage through automation. AI isn't just what we build, it's how we operate
 </li>
 <li>
 Customer obsession: We build with urgency and empathy, speak to customers early and often, and measure success through their outcomes
 </li>
 <li>
 Speed as a habit: We ship fast, learn faster, and prioritize unblocking over perfection. We favour small experiments with tight feedback loops
 </li>
 <li>
 Leverage-focused execution: We hire high-impact players, invest in the 20% that drives 80% of results, and value candid feedback
 </li>
 <li>
 Highly aligned, loosely coupled: We align on outcomes, not tasks. You'll work independently, but never in isolation
 </li>
 <li>
 Data-driven, human-guided: We seek clarity over comfort, speak up early, and use feedback to grow together
 
 
 </li>
 </ul>
 If this sounds like the kind of work you want to do and the kind of team you want to grow with, we'd love to hear from you!
</div>

Senior Backend Engineer

DM Clinical Research

<div>We are seeking an AI Applications Engineer with deep expertise in AI systems development to join our engineering team. In this role, you&rsquo;ll bridge the gap between ML research and real-world software delivery &mdash; designing, developing, and deploying intelligent applications powered by modern AI technologies including LLMs, multimodal models, and agentic workflows. You'll work closely with data scientists, ML engineers, and product managers to ship cutting-edge, scalable AI-powered features across web, backend, and mobile platforms. 
DUTIES &amp; RESPONSIBILITIES<ul><li>
Design and build AI-native applications leveraging LLMs (e.g., OpenAI, Anthropic, Mistral) and multimodal models.</li><li>
Architect and implement agent-based workflows using frameworks like LangGraph, CrewAI, and AutoGen.</li><li>
Develop production-grade Python services using FastAPI or similar frameworks to expose AI functionalities via APIs.</li><li>
Fine-tune and serve custom LLMs for text, voice, and multimodal inputs; implement Retrieval-Augmented Generation (RAG) pipelines.</li><li>
Integrate vector search systems (e.g., Weaviate, Qdrant, Pinecone) for semantic memory and contextual reasoning.</li><li>
Use modern orchestration tools like LangChain, Flowise, Haystack, or n8n to prototype and scale intelligent flows.</li><li>
Leverage the OpenAI Function Calling / Tools API and Model Context Protocol (MCP) to build structured, dynamic LLM interactions.</li><li>
Implement continuous evaluation loops using synthetic data, human feedback (RLHF), and evaluation frameworks like Ragas or DeepEval.</li><li>
Collaborate with ML/infra teams to containerize, deploy, and monitor models using tools like Docker, MLflow, BentoML, or Kubernetes.</li><li>
Build scalable, secure, and efficient AI feature delivery pipelines across web and mobile platforms.</li><li>
Stay current with developments in foundation models, agent frameworks, multimodal AI, and open-source toolkits.</li></ul>
KNOWLEDGE &amp; EXPERIENCE
Education:<ul><li>
Bachelor's or Master&rsquo;s degree in Computer Science, Software Engineering, Artificial Intelligence, or related discipline.</li></ul>
Experience:<ul><li>
2&ndash;4 years of experience building and deploying AI/ML-powered software.</li><li>
Proven track record of delivering LLM-integrated applications and/or agentic workflows in production.</li><li>
Experience in any of the following domains is a plus: NLP, computer vision, multimodal models, or conversational AI.</li></ul>
Knowledge and Skills:<ul><li>
Proficient in Python and building production-grade RESTful APIs (FastAPI preferred).</li><li>
Experience working with foundation model APIs (OpenAI, Claude, Gemini, Mistral, Cohere).</li><li>
Familiarity with LangChain, LangGraph, CrewAI, Flowise, or similar frameworks.</li><li>
Experience implementing RAG pipelines and retrieval layers with vector databases (Pinecone, Qdrant, Weaviate, FAISS).</li><li>
Understanding of prompt engineering, structured memory (MCP), tool calling, and multi-turn conversation flows.</li><li>
Comfortable with tools like MLflow, Weights &amp; Biases, or BentoML for model versioning and tracking.</li><li>
Ability to integrate with third-party services, RESTful APIs, and webhooks (Zapier, n8n, etc.).</li><li>
Familiarity with MLOps and CI/CD workflows for AI applications.</li><li>
Experience working with containerized environments (Docker, Kubernetes).</li><li>
Git, agile software development practices, and collaborative code workflows.</li><li>
Experience with speech recognition (Whisper), text-to-speech (ElevenLabs), or multimodal APIs (e.g., GPT-4o).</li></ul></div>

AI Applications Engineer

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