Senior Python Developer Jobs in McLean, VA (NOW HIRING)

Peregrine Advisors is a firm founded on a simple conviction: the best solutions come from the people closest to the problem, given real ownership and the tools to deliver. We are a data and technology innovation hub and a Benefit Corporation working at the center of the federal government's mission to deliver for client stakeholders and the US public, looking for highly motivated contributors who thrive when trusted to own a hard problem and equipped to deliver the solution.
Your first assignment
Your first assignment will likely put you in charge of defining and delivering solutions for modern applications:

• leading feature work on an AWS cloud-native stack, with ownership of user stories from refinement all the way to production;

• directing the build of serverless, event-driven application workflows on Lambda and Step Functions;

• owning how commercial off-the-shelf (COTS) products integrate into the larger system frameworks built in-house;

• designing and shipping the API interconnections modern system architectures rest on; or

• leading the data and document pipelines that make automatic what used to be manual and paper-heavy.

Adaptability and a demonstrated capacity to learn new concepts, systems, and tools are what keep you ahead of program needs as projects complete and priorities shift.
The work is real, hard, and it matters. It is also where you start, not the shape of your career here: we hire people, not seats, and we move our best to where the hardest problems are.
What you'll build
Cloud-native, modern systems whose streamlined, automated operation creates exceptional business value.
Tested, working code you own into production, and the quality bar the whole team builds to.
Automation that retires manual process: the validations, checks, and workflows that once lived in somebody's spreadsheet.
The delivery path itself: the pipelines and automated tests you build and maintain rather than merely use.
AI-assisted development as the default way of working: you set the pattern for tools like Amazon Q Developer.
Developers who improve because they work alongside you.
And over time, the firm itself, through the new capabilities, tools, and lines of business you help launch.
Who you are
You take personal ownership of what you build, and everything near you gets better for it: the code, the tests, the people. The hard call comes to you because you make it well and without drama. When priorities move, you keep the team level and productive. You communicate clearly, adapt across roles and clients, and care about creating public value. You experiment, fail, learn, and repeat quickly. You would rather own an outcome than be handed a task.
What you bring
Deep command of modern cloud development, with the range to build something new or improve what already runs.
The matching delivery habits, and the standing to set them for a team: version control, automated testing, code review, secure coding, and accessibility.
The judgment to weigh competing solution paths on their merits and pick the one the business actually needs.
Plain-language communication about your work with the people who depend on it, and the ear to hear what they need back.
The precision to work where accuracy and auditability are not optional.
What you'll need
Sole United States citizenship and the ability to obtain a Public Trust determination are required for this initial engagement. This is a hybrid role based in the Washington, DC metropolitan area, and it requires commuting into DC regularly. Everything else, the years, the certifications, the specific tools, we ask in the application and get into during the interview.
What we offer
A high-performing team of developers, engineers, data scientists, architects, and strategists solving complex, real-world problems, with work that runs from strategy formulation to hands-on implementation. We develop people across roles and clients, with extensive onboarding and sponsored training and professional development. And Peregrine has been a Benefit Corporation from day one: public value is built into the work itself, not bolted on afterward. Work worth your best years.
What we commit to
As a Benefit Corporation, our commitment runs three ways: real, measurable value for our clients; government that works better for the public; and a team that makes everyone in it better.
We hire people who want to help build the firm, not just work at it. If that is you, apply.
Peregrine Advisors is an equal opportunity employer.
Peregrine exclusively works with OPEN Data Jobs to recruit our team. Register with OPEN Data Jobs to be considered for this opening and future roles.
Requirements

• 7+ years of software development experience

• Bachelor's degree

• Expert-level command of Python

• Strong hands-on experience with cloud-native development on Amazon Web Services (AWS)

• Proficiency with modern languages and frameworks, and with continuous integration and continuous delivery (CI/CD)

• Experience with automated testing and secure coding

• Ability to construct and own the design of a component, and to carry it through to production

• Basic proficiency in writing, PowerPoint, and Excel

• PREFERRED

• Amazon Web Services certification

• Serverless and event-driven development experience

• Federal information technology experience

• Familiarity with AI-assisted developer tooling

Benefits
Medical, dental, and vision with the employee premium fully paid and half of dependent premiums; employer-paid life, accidental death, and short-term and long-term disability insurance; a 401(k) matched 100% up to 4% of salary, vesting immediately; unlimited paid time off; and sponsored professional certifications and continuing education.