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As a Tech Lead on the EcliptOS Platform, you will guide a group of technologists, bridging vision and delivery. You will work in a product team to deliver impactful AI solutions leveraging the firm’s data, with engineers, designers, and product managers. The role requires writing, testing, debugging, and maintaining application code using Python, React and NextJS, and using LLMs for data retrieval and synthesis. You will lead and review others' work, foster a development-focused, globally distributed team, and focus on customization for Defense and other government clients.
- Compensation
- $214,100 – $217,600 USD
- City
- Boston, Chicago, New York City, San Francisco, Silicon Valley, Washington DC
- Country
- United States
Currency: $ (USD)
Full Job Description
Principal Software Engineer - Platform
Job ID: 106464
- Boston
- Chicago
- New York City
- San Francisco
- Silicon Valley
- Washington DC
Your Impact
Your Growth
- 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.
- A voice that matters: From day one, we value your ideas and contributions. Youll 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.
- Global community: With colleagues across 65+ countries and over 100 different nationalities, our firms diversity fuels creativity and helps us come up with the best solutions for our clients. Plus, youll have the opportunity to learn from exceptional colleagues with diverse backgrounds and experiences.
- 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.
Your qualifications and skills
- 5+ years of experience as a Software Engineer
- Defense experience and experience working with data various classification levels required
- Experience with distributed system architectures and secure platform engineering
- Strong programming skills in Python
- Expertise in React and NextJS
- Expertise with SQL databases, particularly PostgreSQL or cloud equivalent such as Amazon RDS
- Experience utilizing LLMs and prompt engineering
- Experience with CI/CD pipeline setup and management, familiarity in using cloud platforms for deploying and managing applications, and familiarity with GitHub for version control and code collaboration
- Experience with knowledge graphs
- Knowledge of containerization
- US Citizenship required
- SECRET Security Clearance Required; TS+ clearance preferred
- Aerospace & Defense
- Technology
FOR U.S. APPLICANTS: McKinsey & Company is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by applicable law.
Certain US jurisdictions require McKinsey & Company to include a reasonable estimate of the salary for this role. For new joiners for this role in the United States, including all office locations where the job may be performed, a reasonable estimated range is $214,100 - $217,600 USD to help you understand what you can expect. This reflects our best estimate of the lowest to highest [salary/hourly wages] for this role at the time of this posting, ensuring you have a clear picture right from the start, though it's important to remember that actual salaries may vary. Factors like your office location, your unique blend of experience and skills, start date and our current organizational needs all play a part in determining the final figure. Certain roles are also eligible for bonuses, subject to McKinsey's discretion and based on factors such as individual and/or organizational performance.
Additionally, we provide a comprehensive benefits package that reflects our commitment to the wellness of our colleagues and their families. This includes medical, mental health, dental and vision coverage, telemedicine services, life, accident and disability insurance, parental leave and family planning benefits, caregiving resources, a generous retirement contributions program, financial guidance, and paid time off.
FOR NON-U.S. APPLICANTS: McKinsey & Company is an Equal Opportunity employer. For additional details regarding our global EEO policy and diversity initiatives, please visit our McKinsey Careers and Diversity & Inclusion sites.
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Job Skill Code - PSE1 - Principal Software Engineer I
Function - Technology
Industry - Aerospace & Defense
Post to LinkedIn - Yes
Posted to LinkedIn Date - Mon Mar 02 00:00:00 GMT 2026
LinkedIn Posting City - Washington DC
LinkedIn Posting State/Province - District of Columbia
LinkedIn Posting Country - United States
LinkedIn Job Title - Principal Software Engineer - Platform
LinkedIn Function - Consulting;Information Technology
LinkedIn Industry - Defense & Space;Information Technology and Services
LinkedIn Seniority Level - Mid-Senior level
