principal software engineer

CVS Health

<div>We&rsquo;re building a world of health around every individual &mdash; shaping a more connected, convenient and compassionate health experience. At CVS Health&reg;, you&rsquo;ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger &ndash; helping to simplify health care one person, one family and one community at a time.
Position Summary
We are hiring a Principal Software Engineer &mdash; a deeply hands-on technical leader who thrives on solving complex problems, writing production code, and elevating the engineers around them.
You will serve as the senior engineering voice across a portfolio of mission-critical clinical decision-support applications. These systems combine low-latency distributed architectures with advanced LLM, OCR, and ML pipelines running on Google Cloud.
This is not an &ldquo;architect-from-the-sidelines&rdquo; role. You will actively design systems, write critical code, ship to production, support live environments, and mentor engineers across UI, backend, and ML. Success in this role is measured by the quality, performance, reliability, and clinical impact of what you deliver&mdash;not by presentations.<h2 class="jobSectionHeader">
What You&rsquo;ll Do</h2><ul><li>
Own architecture and execution 
Lead the technical direction of a real-time, multi-service clinical platform on GCP, while personally building the most critical and performance-sensitive components.</li><li>
Build production-grade LLM systems 
Design and operate scalable LLM pipelines (e.g., Claude, Gemini, GPT-4-class) including prompt engineering, structured outputs, evaluation frameworks, retrieval/vector search, OCR-based document understanding, grounding, guardrails, and hallucination mitigation.</li><li>
Deliver real-time, high-performance systems 
Architect distributed, event-driven, streaming services that support sub-second clinician experiences under heavy load, with strict SLOs and strong fault tolerance.</li><li>
Operationalize machine learning 
Lead deployment and lifecycle management of models on Vertex AI, including feature pipelines, model registries, drift detection, A/B and shadow testing, and CI/CD-integrated quality controls.</li><li>
Design for scalability and change 
Build flexible APIs, microservices, and data contracts that support rapid iteration, backed by strong testing, observability, and progressive delivery practices.</li><li>
Raise the engineering bar 
Drive high-quality code reviews, establish standards across testing, CI/CD, security, and observability, and mentor engineers across full-stack and ML disciplines.</li><li>
Own outcomes end-to-end 
Translate ambiguous clinical and business needs into delivered solutions, monitor real-world performance, and continuously iterate based on data.</li><li>
Partner across disciplines 
Collaborate with Data Science, Product, Clinical SMEs, AI Governance, and Security teams to ensure solutions meet enterprise standards for compliance, privacy, and safety.</li></ul><h2 class="jobSectionHeader">
Required Qualifications:</h2><ul><li>
10+ years of software engineering experience with a strong record of delivering production systems at scale</li><li>
5+ years as a hands-on Staff or Principal-level engineer (actively coding, not removed from implementation)</li><li>
Expert proficiency in Python including performance tuning, concurrency, and system optimization</li><li>
5+ years building real-time distributed systems (event-driven, streaming, Pub-Sub) with clear latency and reliability requirements</li><li>
5+ years working in a major public cloud (GCP preferred: Vertex AI, GKE, Cloud Run, Pub/Sub, BigQuery, IAM, etc.)</li><li>
Deep experience with microservices architecture, API design (REST), and resilient systems (retries, backpressure, tracing)</li><li>
3+ years building and operating production ML systems (MLOps, monitoring, retraining, deployment pipelines)</li><li>
3+ years developing LLM-powered applications in production, including prompt design, RAG/vector search, evaluation frameworks, and performance optimization</li><li>
Experience building modern UI components with React or Angular</li><li>
Strong computer science fundamentals, including distributed systems, algorithms, and concurrency</li></ul> 
Preferred Qualifications<ul><li>
Experience operating LLM systems in regulated environments (PII/PHI, governance, security, auditability)</li><li>
Familiarity with vector databases (e.g., Vertex Vector Search, Pinecone, Weaviate, pgvector) and advanced retrieval techniques</li><li>
Experience designing evaluation frameworks for LLM systems (gold datasets, regression testing, LLM-as-judge)</li><li>
Strong background in CI/CD, SRE practices, and SLO-driven engineering</li><li>
Experience with healthcare data standards (FHIR, HL7) and compliance frameworks (HIPAA, HITRUST)</li><li>
Strong communication skills, with the ability to explain complex systems to both technical and non-technical audiences</li><li>
Proven track record of mentoring engineers into senior and staff roles</li></ul>
Education:<ul><li>
Bachelor&rsquo;s degree in Computer Science or a related field (or equivalent experience)</li><li>
Master&rsquo;s or PhD in Computer Science, Machine Learning, or a related discipline is a plus</li></ul>
Pay Range
The typical pay range for this role is:
$144,200.00 - $288,400.00 
This pay range represents the base hourly rate or base annual full-time salary for all positions in the job grade within which this position falls. The actual base salary offer will depend on a variety of factors including experience, education, geography and other relevant factors. This position is eligible for a CVS Health bonus, commission or short-term incentive program in addition to the base pay range listed above. This position also includes an award target in the company&rsquo;s equity award program. 
Our people fuel our future. Our teams reflect the customers, patients, members and communities we serve and we are committed to fostering a workplace where every colleague feels valued and that they belong.
Great benefits for great people
We take pride in offering a comprehensive and competitive mix of pay and benefits that reflects our commitment to our colleagues and their families. 
This full‑time position is eligible for a comprehensive benefits package designed to support the physical, emotional, and financial well‑being of colleagues and their families. The benefits for this position include medical, dental, and vision coverage, paid time off, retirement savings options, wellness programs, and other resources, based on eligibility. 
Additional details about available benefits are provided during the application process and on Benefits Moments. 
We anticipate the application window for this opening will close on: 10/02/2026
Qualified applicants with arrest or conviction records will be considered for employment in accordance with all federal, state and local laws.</div>

Principal Software Engineer

Northrop Grumman

<div>RELOCATION ASSISTANCE: Relocation assistance may be available
CLEARANCE REQUIRED FOR START: Yes
CLEARANCE TYPE: Secret
TRAVEL: No<h2 class="jobSectionHeader">
Description</h2>
At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work &mdash; and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.
Northrop Grumman Defense Systems (NGDS) is looking for a Software Engineer / Principal Software Engineer based in Hollywood, MD. Our Team works on state-of-the-art Mission Planning systems.
Responsibilities Include:<ul><li>
Designs, develops, documents, tests and debugs applications software and systems that contain logical and mathematical solutions while ensuring software standards are met</li><li>
Maintain and improve the software CI/CD pipelines to enable fast, bug free delivery of critical business software to production</li><li>
Set up and deploy Development, Test, and Build environments</li><li>
Create and update Windows installers</li><li>
Install, test, and verify software products</li><li>
Provide support for the software build and installation</li><li>
Work within a Cross-Functional scrum to develop high-priority mission planning features</li><li>
Understand third-party software and hardware peripherals to support implementation of software interfaces and support integration</li><li>
Develop software test products such as Verification Cross Reference Matrices to tie software requirements to software tests, Software Test Plans, Software Test Procedures, and Software Test Reports</li><li>
Define and develop test approaches for new software and system capabilities</li><li>
Compile data and define changes required in testing procedures or new testing requirements</li><li>
Perform frequent Smoke Testing and frequent Acceptance Testing on SW builds</li><li>
Resolve technical issues within a scrum, across scrums, and with the support of other functional roles</li><li>
Interface on a technical level with the customer</li><li>
Support authoring and development of contract deliverable documentation that support deliverable software products and test events</li><li>
Help define automated test strategies.</li><li>
Support the Agile Framework as a Scrum Master, when required</li></ul>
All work must be performed on-site in Hollywood, MD
Software Engineer Basic Qualifications:<ul><li>
Bachelor's degree in STEM and a minimum of 2 years of relevant (Computer Science, etc.) experience, or 0 years of experience with a Master&rsquo;s degree (Computer Science, etc.). Relevant (Computer Science, etc.) years of experience in lieu of degree may be considered</li><li>
US Citizenship and current Secret Clearance (adjudicated within the last 5 years), with ability to obtain Special Access Program (SAP) clearance</li><li>
Experience with/using Agile Methodology and Continuous Integration (CI) / Continuous Deployment (CD) Tools (Bamboo, Jenkins) and Practices</li><li>
Proficiency in C# and/or Java and Object-Oriented Software Design paradigms</li><li>
Experience with Microsoft Windows technologies</li><li>
Test procedure development and maintenance</li><li>
Experience supporting/coordinating formal test events</li><li>
Experience with one or more of the following scripts: yaml, Python, PowerShell, Batch, Typescript</li><li>
Automated test script or test procedure development and maintenance for software testing</li><li>
Experience with automated testing and test software such as TestComplete 4</li><li>
A functional understanding of how revision control systems (e.g., BitBucket, git, CVS, etc.) are used</li><li>
Hands-on system troubleshooting skills</li></ul>
Principal Software Engineer Basic Qualifications:<ul><li>
Bachelor's degree in STEM and a minimum of 5 years of relevant (Computer Science, etc.) experience, or 3 years of experience with a Master&rsquo;s degree (Computer Science, etc.). Relevant (Computer Science, etc.) years of experience in lieu of degree may be considered</li><li>
US Citizenship and current DoD Top Secret Clearance (adjudicated within the last 5 years), with ability to obtain Special Access Program (SAP) clearance</li><li>
Experience with/using Agile Methodology and Continuous Integration (CI) / Continuous Deployment (CD) Tools (Bamboo, Jenkins) and Practices</li><li>
Proficiency in C# and/or Java and Object-Oriented Software Design paradigms</li><li>
Experience with Microsoft Windows technologies</li><li>
Test procedure development and maintenance</li><li>
Experience supporting/coordinating formal test events</li><li>
Experience with one or more of the following scripts: yaml, Python, PowerShell, Batch, Typescript</li><li>
Automated test script or test procedure development and maintenance for software testing</li><li>
Experience with automated testing and test software such as TestComplete 4</li><li>
A functional understanding of how revision control systems (e.g., BitBucket, git, CVS, etc.) are used</li><li>
Hands-on system troubleshooting skills</li></ul>
Preferred (Nice to Have) Qualifications:<ul><li>
Proficiency in C#, .NET Framework</li><li>
Experience with Windows Presentation Foundation (WPF) and Microsoft Windows-based Applications</li><li>
Experience with Microservice development and service communication protocols such as gRPC and/or REST</li><li>
Experience with Software Design Patterns</li><li>
Experience with/using Relational Databases, SQL</li><li>
Experience with the Atlassian Tool Suite: Bitbucket, Jira, Confluence, Crucible/Fish-eye</li><li>
Familiarity with/using/deploying to Cloud technology: Azure and/or AWS</li><li>
Familiarity with/using Containers in Docker and/or Kubernetes</li><li>
Experience with/using and/or managing these DevOps tools: Ansible, Terraform, Chef, or Puppet</li><li>
Excellent communication and organizational skills; strong interpersonal and analytic skills</li><li>
Previous in-depth mission planning domain knowledge of program software design and code</li><li>
Certified ScrumMaster&reg; (CSM&reg;) or Professional Scrum Master&trade; (PSM&trade;) certification</li><li>
Experience working with requirements in DOORS.</li><li>
Demonstrated ability to implement process improvements, streamline activities, and develop efficiencies.</li><li>
Strong interpersonal and analytic skills; Works well in a team-environment</li><li>
Experience with Joint Mission Planning System (JMPS) Framework (FW)</li><li>
Exposure to Infrastructure as Code (IaC) development</li><li>
Experience with Air Force mission planning</li></ul>
Primary Level Salary Range: $91,800.00 - $137,600.00
Secondary Level Salary Range: $114,000.00 - $171,000.00
The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.
Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.
The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.
Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.</div>

Software Engineer / Principal Software Engineer (AHT)

QuantumBlack, AI by McKinsey

<div>
 
 Who You'll Work With
 
 
 
 Driving lasting impact and building long-term capabilities with our clients is not easy work. You are the kind of person who thrives in a high performance/high reward culture - doing hard things, picking yourself up when you stumble, and having the resilience to try another way forward.
 
 
 In return for your drive, determination, and curiosity, we'll provide the resources, mentorship, and opportunities you need to become a stronger leader faster than you ever thought possible. Your colleagues&mdash;at all levels&mdash;will invest deeply in your development, just as much as they invest in delivering exceptional results for clients. Every day, you'll receive apprenticeship, coaching, and exposure that will accelerate your growth in ways you won&rsquo;t find anywhere else.
 
 
 When you join us, you will have:
 
 
 <ul>
 <li>
 Continuous learning: Our learning and apprenticeship culture, backed by structured programs, is all about helping you grow while creating an environment where feedback is clear, actionable, and focused on your development. The real magic happens when you take the input from others to heart and embrace the fast-paced learning experience, owning your journey.
 </li>
 <li>
 A voice that matters: From day one, we value your ideas and contributions. You&rsquo;ll make a tangible impact by offering innovative ideas and practical solutions, all while upholding our unwavering commitment to ethics and integrity. We not only encourage diverse perspectives, but they are critical in driving us toward the best possible outcomes.
 </li>
 <li>
 Global community: With colleagues across 65+ countries and over 100 different nationalities, our firm&rsquo;s diversity fuels creativity and helps us come up with the best solutions for our clients. Plus, you&rsquo;ll have the opportunity to learn from exceptional colleagues with diverse backgrounds and experiences.
 </li>
 <li>
 World-class benefits: On top of a competitive salary (based on your location, experience, and skills), we provide a comprehensive benefits package to enable holistic well-being for you and your family.
 
 
 </li>
 </ul>
 
 Your Impact
 
 
 
 As a Principal Engineer I, you will lead development teams to design and deliver enterprise-grade software solutions while shaping clients' tech strategies and mentoring their teams.
 
 
 Your role offers the opportunity to work across industries, influence C-level decisions, and become a leading expert in cutting-edge technologies. You will work hands-on to architect, design, and deliver enterprise-grade software solutions while mentoring client teams to adopt best practices.
 
 
 Your role will involve leading multiple development teams, defining short- and long-term technology strategies, and partnering with cross-functional teams to solve complex business challenges. You will also establish metrics and KPIs to drive alignment and ensure the success of engineering-powered solutions.
 
 
 Your work will help clients achieve their goals while shaping their technological ecosystems and engineering cultures. By working directly with C-level leaders, you will influence strategic decisions and deliver impact beyond the products you build. You&rsquo;ll also work across a variety of industries and technologies, gaining new insights and expertise with every project.
 
 
 You will lead the design and delivery of innovative technology solutions that transform businesses across industries. Based in one of our global locations, you will be part of a multidisciplinary group of software engineers, Agile coaches, designers, and technologists passionate about creating industry-shaping products and tools.
 
 
 Your role offers unparalleled opportunities for growth and impact. At McKinsey, you&rsquo;ll have access to C-level leaders eager to hear your expertise, the chance to work on diverse projects, and the resources to become a leading expert in your field. Supported by a collaborative and innovative team, you&rsquo;ll make a lasting impact on clients, industries, and the future of technology.
 
 
 
 Your Qualifications and Skills
 
 
 
 <ul>
 <li>
 Undergraduate or master&rsquo;s degree; or equivalent experience
 </li>
 <li>
 8+ years of experience in software development and architecture with a demonstrated track record of successfully understanding the business requirements and designing realistic and effective solutions
 </li>
 <li>
 Active in the tech community (e.g. contributing to open-source projects, speaking at conferences, blogging, etc.) and experience working collaboratively with technical and non-technical team members and stakeholders
 </li>
 <li>
 Demonstrated knowledge and hands-on experience across the full application stack with some of the following languages/frameworks: JavaScript, TypeScript, React, Angular, Vue, jQuery, Java, Sprint, C#, .NET, Node.js, SQL, MySQL, SQL Server, MongoDB, cloud-native databases, AWS, Azure, GCP, Jenkins, Docker, Circle CI, Travis Engineering practice experience such as code refactoring, design patterns, design-driven development, continuous integration, building highly scalable applications, application security
 </li>
 <li>
 Experience leading in Agile teams, including coaching and modeling Agile mindsets as part of sprint ceremonies, work definition and building developer capabilities
 </li>
 <li>
 Experience writing unit tests with major frameworks (e.g., Karma, JUnit, NUnit, MSTest) and practicing test-driven development
 </li>
 <li>
 Exceptional time management to meet your responsibilities in a complex and largely autonomous work environment
 </li>
 <li>
 Strong communication skills, both verbal and written, in English and local office language(s), with the ability to adjust your style to suit different perspectives and seniority levels
 </li>
 </ul>
</div>

Principal Software Engineer - QuantumBlack, AI by McKinsey

Volga Partners

<div>Location 
Islamabad, Pakistan 
House #571, Street #35, E-11/3, Islamabad
Employment Type 
Full-time
Work Setup: Hybrid
 
3 days in office 
2 days remote
Compensation 
PKR 600,000 &ndash; 850,000 per month 
(Compensation will be determined based on experience, software and AI background, technical expertise, AI product experience, and overall alignment with the role). 
About Volga Partners
Volga Partners is a global technology and AI solutions company focused on building innovative products, platforms, and intelligent systems that solve real-world business challenges. Our teams work across AI, software development, automation, data operations, and enterprise technology solutions supporting clients and products on a global scale.
We are building the next generation of AI-powered products and platform experiences and are seeking a Principal Software &amp; AI Engineer who thrives in fast-paced environments, enjoys solving complex problems, and can connect customer needs, business goals, and technology into a clear product vision.
About the Role
We are seeking a highly experienced Senior Software &amp; AI Engineer to join our growing engineering team. The ideal candidate will possess extensive experience in full-stack software development, system architecture, cloud technologies, artificial intelligence, and modern software engineering practices.
This role requires a hands-on technical leader capable of designing, developing, and deploying scalable enterprise applications while leveraging AI technologies to build innovative solutions. The candidate should be comfortable working across multiple programming languages, frameworks, and cloud environments.
Key Responsibilities<ul><li>
Design, architect, and develop scalable enterprise-grade software applications.</li><li>
Lead the development of AI-powered products and features utilizing modern AI/ML technologies.</li><li>
Build and maintain high-performance backend services, APIs, and distributed systems.</li><li>
Develop modern web applications and user interfaces using current frontend frameworks.</li><li>
Design database architectures and optimize application performance.</li><li>
Integrate third-party services, APIs, payment gateways, and cloud-based solutions.</li><li>
Collaborate with product managers, designers, and stakeholders to define technical requirements.</li><li>
Implement security best practices and ensure compliance with industry standards.</li><li>
Mentor junior and mid-level engineers and conduct technical reviews.</li><li>
Drive architectural decisions and establish engineering best practices.</li><li>
Participate in Agile development processes and technical planning.</li></ul> 
Required Qualifications
Experience<ul><li>
Minimum 8 years of professional Software/AI engineering experience.</li><li>
Proven experience delivering large-scale production applications.</li><li>
Strong experience working with international teams and remote environments.</li><li>
Experience leading technical projects and mentoring engineering teams.</li></ul>
Programming Languages
Candidates should have strong experience with most of the following technologies:<ul><li>
JavaScript</li><li>
TypeScript</li><li>
Python</li><li>
Java</li><li>
C#</li><li>
Go (Golang)</li><li>
PHP</li><li>
C++</li><li>
Rust</li><li>
SQL</li></ul>
Frontend Technologies<ul><li>
React.js</li><li>
Next.js</li><li>
Angular</li><li>
Vue.js</li><li>
HTML5</li><li>
CSS3</li><li>
Tailwind CSS</li><li>
Redux</li></ul>
Backend Technologies<ul><li>
Node.js</li><li>
Express.js</li><li>
NestJS</li><li>
Django</li><li>
FastAPI</li><li>
ASP.NET Core</li><li>
Spring Boot</li><li>
GraphQL</li><li>
REST APIs</li><li>
Microservices Architecture</li></ul>
Artificial Intelligence &amp; Machine Learning<ul><li>
OpenAI API</li><li>
Large Language Models (LLMs)</li><li>
Prompt Engineering</li><li>
AI Agent Development</li><li>
Retrieval-Augmented Generation (RAG)</li><li>
Vector Databases</li><li>
LangChain / LlamaIndex</li><li>
Machine Learning Fundamentals</li><li>
AI Workflow Automation</li></ul>
Databases<ul><li>
PostgreSQL</li><li>
MySQL</li><li>
MongoDB</li><li>
Redis</li><li>
SQL Server</li></ul>
Cloud &amp; DevOps<ul><li>
AWS</li><li>
Azure</li><li>
Google Cloud Platform (GCP)</li><li>
Docker</li><li>
Kubernetes</li><li>
CI/CD Pipelines</li><li>
GitHub Actions</li><li>
Terraform</li><li>
Linux Administration</li></ul>
Security &amp; Architecture<ul><li>
OAuth</li><li>
JWT Authentication</li><li>
RBAC</li><li>
Secure Coding Practices</li><li>
Distributed Systems</li><li>
Event-Driven Architecture</li><li>
System Design</li><li>
Performance Optimization</li></ul> 
Preferred Qualifications<ul><li>
Experience building SaaS products.</li><li>
Experience working with healthcare, fintech, or enterprise applications.</li><li>
Knowledge of data engineering and analytics platforms.</li><li>
Experience with AI-powered automation systems.</li><li>
Experience with real-time communication systems and WebSockets.</li><li>
Master's degree in Computer Science, Software Engineering, Artificial Intelligence, or a related field.</li></ul> 
Compensation &amp; Benefits<ul><li>
Monthly compensation ranging from PKR 600,000 &ndash; PKR 850,000</li><li>
90-day probationary period.</li><li>
Eligible for company-sponsored medical insurance upon successful completion of probation.</li><li>
Eligible for holiday pay for designated company-observed holidays after 90 days of employment, subject to company policy.</li><li>
Eligible for Paid Time Off (PTO) in accordance with the company's service-based accrual model and eligibility requirements.</li><li>
Opportunity for career growth, product ownership, and direct impact on company strategy.</li></ul> 
Application Process
Qualified candidates are encouraged to submit their updated resume along with details of relevant projects, technical expertise, and availability.
Only shortlisted candidates will be contacted for interviews.</div>

Principal Software & AI Engineer - Pakistan

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Principal Software Engineer - QuantumBlack, AI by McKinsey

Principal Software & AI Engineer - Pakistan