Principal Engineer Jobs
Principal Engineer jobs are open across technology, fintech, healthtech, defense, and enterprise software, from senior engineer to staff and distinguished-level roles, with specializations in platform engineering, distributed systems, and infrastructure architecture. Find a role that fits from the openings below and apply directly.
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WHY JOIN US?Evinova is a health-tech business focused on accelerating better health outcomes by advancing digital transformation across the life sciences sector. By combining science-based expertise, evidence-led rigor, and deep human insight, we design digital solutions that enable healthcare to work better for everyone.
Operating at the intersection of healthcare, technology, data, and analytics, we are helping unlock the full potential of digital health, transforming how clinical research is conducted, how care is delivered, and how patients experience healthcare. Our solutions are built to scale, driving efficiency, improving decision-making, and ultimately delivering better outcomes for patients worldwide.
At Evinova, we are driven by a shared purpose to transform health through data and digital innovation. Our teams collaborate across disciplines to solve complex challenges, continuously learning and evolving in a fast-paced, high-impact environment.
We also recognize the importance of flexibility and balance. Our ways of working support both individual needs and team collaboration. To foster connection and collaboration, employees are expected to work from the office three days per week, creating opportunities for in-person teamwork, innovation, and meaningful connection.
Introduction to Role:
As Principal AI Engineer, you'll design and implement sophisticated agentic AI systems that power next-generation life sciences solutions. Working at the intersection of AI research and real-world healthcare applications, you'll build intelligent agents that can reason, plan, and act autonomously to solve complex clinical challenges.
What makes this role compelling:
- Lead challenging projects in agentic AI, LLM orchestration, and multi-agent systems
- Build AI agents that directly impact clinical trials, drug discovery, and ultimately patient care
- Collaborate with product teams, clinical experts, and ML engineers in a fast-paced environment
- Develop automated evaluation systems, prompt optimization techniques, and advanced agent architectures
- Contribute to the AI in life sciences community through publications, conferences, and open-source work
Example impactful projects include: Intelligent AI agents for clinical document generation, advanced search systems for medical research, clinical trial optimization tools, synthetic patient data generation, and multi-modal healthcare AI assistants.
Accountabilities:
- Design Advanced AI Systems
- Build and deploy sophisticated agentic AI solutions using state-of-the-art LLMs
- Develop novel approaches to agent memory, tool use, and multi-agent collaboration
- Build sophisticated NLP systems for retrieval, information extraction, structured generation, graph reasoning.
- Drive Technical Innovation
- Create automated techniques for agent design, evaluation, and optimization
- Systematically discover and validate effective prompt engineering approaches for agentic systems
- Build specialized observability pipelines for continuous model and agent performance monitoring
- Lead Cross-Functional Collaboration
- Partner with product, design, and clinical teams to translate AI capabilities into impactful healthcare solutions
- Mentor engineers and contribute to AI strategy across the organization
- Contribute to the Field
- Share expertise at conferences and through technical publications
- Contribute to open-source projects and help advance best practices in healthcare AI
Essential Skills/Experience:
- Bachelor's degree in Engineering, Mathematics, or Computer Science
- 4+ years of experience in applied machine learning, with a strong focus on deep learning, NLP, and generative AI.
- Extensive prior experience exploring and testing language model behavior, prompting and building products with language models.
- Expert knowledge of Python and advanced ML/LLM frameworks (e.g., TensorFlow, PyTorch, Google ADK, Crewai, LangChain, LlamaIndex)
- Extensive experience with AWS services (e.g. SageMaker, Bedrock, MSK, EKS, ECS, OpenSearch).
- Deep understanding of agentic AI systems and frameworks (e.g. agentic design patterns, multi-agent systems, reinforcement learning).
- Excellent communication skills with the ability to articulate complex technical concepts to both technical and non-technical audiences
Desirable Skills/Experience:
- Ph.D. in a relevant field (such as mathematics, computer science, data science).
- Demonstrated technical leadership experience, including successful delivery of large-scale AI projects.
- Experience developing complex agentic systems using LLMs.
- Experience with low-level languages used for implementing high-performance ML code (C/C++, Rust, CUDA, etc.)
- Contributions to open-source AI projects or development of proprietary AI frameworks.
- Expertise in areas such as few-shot learning, meta-learning, explainable AI.
- Experience with AI ethics, responsible AI practices, and navigating regulatory landscapes for AI deployment in the life science industry.
SO, WHAT’S NEXT?
To be considered for this exciting opportunity, please complete the full application on our website at your earliest convenience – it is the only way that our Recruiter and Hiring Manager can know that you feel well qualified for this opportunity. If you know someone who would be a great fit, please share this posting with them.
Where can I find out more?
- Explore what we’re building: www.evinova.com
- Stay connected and see our impact in action: https://www.linkedin.com/company/evinova/
Apply today to bring smarter, faster clinical trials to life!
Evinova is an equal opportunity employer that is committed to diversity and inclusion and providing a workplace that is free from discrimination. Evinova is committed to accommodating persons with disabilities. Such accommodation is available on request in respect of all aspects of the recruitment, assessment and selection process and may be requested by emailing AZCHumanResources@astrazeneca.com.
#LI-Hybrid
The annual base pay for this position ranges from $144,648.80 - $189,851.55 USD. Base pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience.
In addition, our positions offer a short-term incentive bonus opportunity; eligibility to participate in our equity-based long-term incentive program. Benefits offered included a qualified retirement program [401(k) plan]; paid vacation and holidays; paid leaves; and, health benefits including medical, prescription drug, dental, and vision coverage in accordance with the terms and conditions of the applicable plans.
Additional details of participation in these benefit plans will be provided if an employee receives an offer of employment. If hired, employee will be in an “at-will position” and the Company reserves the right to modify base pay (as well as any other discretionary payment or compensation program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors.
Date Posted
01-Nov-2026Closing Date
12-Nov-2026Our mission is to build an inclusive environment where equal employment opportunities are available to all applicants and employees. In furtherance of that mission, we welcome and consider applications from all qualified candidates, regardless of their protected characteristics. If you have a disability or special need that requires accommodation, please complete the corresponding section in the application form.
Principal Engineer Jobs by Experience Level
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Who's Hiring
- Northrop Grumman551

- Raytheon144

- Oracle137

- Collins Aerospace87

- BAE Systems USA76

Top Industries Hiring
- Technology & Software57
- Electronics & Hardware38
- Energy15
- Manufacturing11
- Insurance8
What Employers Look For
The qualifications that appear most often in principal engineer jobs.
- 10 or more years of software engineering experience with 3 or more years in a senior technical leadership role
- Deep expertise in distributed systems, microservices architecture, or large-scale platform design
- Proficiency in at least one primary language such as Java, Python, Go, or C++ at production scale
- Experience defining technical roadmaps, engineering standards, and cross-team architectural direction
- Strong background in cloud infrastructure on AWS, Azure, or Google Cloud including networking and reliability patterns
- Bachelor's or master's degree in computer science, software engineering, or a closely related field
Tips for Your Principal Engineer Job Search
Reframe your resume around influence
Principal engineer resumes stall when they read like senior engineer resumes. Replace task-based bullet points with outcomes you drove at org scale: architecture decisions adopted company-wide, engineering standards you authored, or systems that unblocked multiple teams.
Apply early to roles that fit
Migrate Mate lists principal engineer openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Target companies at the right growth stage
Principal engineer roles are most clearly defined at companies large enough to have distinct staff and senior staff tiers. Series B and later startups, and enterprises mid-migration, hire most actively because architectural debt is acute and technical leadership is underdeveloped.
Prepare a system design narrative in advance
Most principal-level loops include at least one deep system design session. Walk in with two or three real examples you can detail end to end, covering the tradeoffs you rejected and why. Generic designs drawn from textbooks fail at this level.
Negotiate scope before negotiating compensation
At the principal level, the title can mean staff engineer, principal engineer, or distinguished engineer depending on the company ladder. Before discussing pay, clarify reporting structure, decision authority, and whether the role is individual contributor or carries direct reports.
Follow up with a written technical take
After a final-round system design interview, send a brief follow-up note that refines one tradeoff you discussed or flags a constraint you would handle differently. It signals the depth of thinking hiring managers expect from someone at this level.
Principal Engineer Jobs: Frequently Asked Questions
Which companies are hiring the most principal engineers?
The companies hiring the most principal engineers right now include Northrop Grumman, Raytheon, and Oracle, with the largest share of openings in California, Texas, and Massachusetts, based on current listings on Migrate Mate as of November 2026. Demand is consistently highest at large technology companies, defense contractors, and enterprise software firms scaling platform and infrastructure teams.
How many principal engineer jobs are remote?
About 61% of principal engineer openings are fully remote or hybrid as of November 2026, making it one of the more remote-accessible senior technical roles. Platform engineering, distributed systems, and cloud architecture positions tend to offer the most location flexibility, while roles tied to hardware, embedded systems, or on-site lab environments are more likely to require in-person presence.
How do you become a principal engineer?
Becoming a principal engineer typically requires moving from senior engineer to a role where you own technical direction beyond your immediate team. The path involves leading cross-functional architecture decisions, mentoring multiple engineers, building a reputation for engineering judgment that other teams rely on, and demonstrating that your technical choices have measurable long-term impact on product reliability, scalability, or developer productivity.
Can you get hired as a principal engineer without prior principal-level experience?
Yes, candidates are hired at the principal level from strong senior engineer backgrounds when they can show scope that already matches the role. If you have owned architecture decisions that affected multiple teams, authored engineering standards adopted across an organization, or led a platform migration end to end, those contributions often carry more weight than holding a prior principal title at a smaller company.
What does the principal engineer interview process look like?
The principal engineer interview process typically runs four to six rounds and includes a recruiter screen, a hiring manager conversation focused on scope and leadership philosophy, one or two deep system design sessions, a behavioral or executive interview assessing cross-functional influence, and sometimes a technical presentation or architecture review. Loops at this level spend more time on judgment, tradeoffs, and organizational impact than on algorithmic coding problems.
Where can I find and apply to principal engineer jobs?
You can find and apply to principal engineer jobs on Migrate Mate, which lists current openings from across the United States. Search the available roles, find the ones that match your background and preferred location or remote setup, and apply directly to each listing.
See All 3,797+ Principal Engineer Jobs
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