Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Senior Software Engineer

Full-time

Antithesis

We work across a huge range of domains, developing lots of our own tools along the way -- and all with a small team. That means we hire generalists who know an area or two well but love to learn new things and fearlessly hack on whatever is needed. What we do care about: you're smart, get things done, a joy to work with, and are comfortable dealing with open-ended/poorly-defined problems.

Some of the tech and languages we use:

  • Nix. Lots of Nix. Nix for builds, Nix for infrastructure.

  • C/C++ and Rust for kernel and systems programming.

  • Typescript (and JS) on the front end & Node.js engine on the back, too. 

  • All the other languages also: see our list of SDKs

The Team

Our team is comprised of people with a variety of backgrounds: standard engineering degrees, to philosophy, to no degree at all. But we have at least one common skill: everyone on the team, including managers, is held to the same high standard of engineering competency. In addition, we value in-person work for its value in building trust and sharing knowledge and mentoring each other.

If that sounds like you, include with your resume a brief (one to two paragraph) explanation of an interesting technical challenge you've faced.

Note: This is an 5 days a week in-office job

Vacancy posted 1 day ago
Similar jobs that could be interesting for youBased on the Senior Software Engineer in Vienna, VA vacancy
  •  ...challenge. At Antithesis, we run entire software systems inside a deterministic simulation...  ...is the Fuzzer, our autonomous search engine for bugs and one of the most technically...  ...continuously without ever letting up. As a Senior Engineer on the Autonomous Search team, you... 
    Senior
    Full time
    Work at office

    Antithesis

    Vienna, VA
    1 day ago
  • $100k - $185k

    OverviewAs a Senior Software Engineer, you will work with a team of developers to deliver software features, APIs, and microservice-based solutions. We are looking for candidates with experience designing, developing, and delivering modern software solutions using Agile... 
    Senior

    Steampunk

    McLean, VA
    1 day ago
  • $157.3k - $215.1k

     ...training and more.   Join us to drive positive, lasting change that moves missions and the government forward!   As Senior Software Engineer, you’ll bring creative architect solutions to end customers, with the goal to make an impact across the federal government... 
    Senior
    Full time
    Live in
    Work at office
    Local area

    Accenture Federal Services

    Tysons Corner, VA
    1 day ago
  • $129k - $193k

     ...organization where your work contributes to a greater purpose.Position Overview: Join our Enterprise Business Technology team as a Senior Software Engineer, where you'll lead the development of Corporate Communications and Marketing technology solutions. You'll design and... 
    Senior
    Work experience placement
    Work at office
    Local area

    Freddie Mac

    McLean, VA
    1 day ago
  • $86.8k - $198k

    Software Engineer, SeniorThe Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you’re looking for the chance to not just develop software, but to help create a system that will make a difference... 
    Senior
    Full time
    Contract work
    Part time
    Work at office
    Local area
    Remote work

    Booz Allen Hamilton

    McLean, VA
    1 day ago
  •  ...make a difference with us.Department Summary: Do you want to engineer software systems that contribute to solving our nation’s most critical...  ...and career growth.Roles & Responsibilities:MITRE is seeking a Senior Agentic Software Engineer to design, build, secure, and... 
    Senior
    Internship
    Local area
    Immediate start

    Mitre

    McLean, VA
    1 day ago
  •  ...Software Engineer TLA is seeking a Software Engineer to design, develop, and integrate secure computing environments that support critical mission objectives. In this role, you'll contribute to the full software lifecycle—from architecture and development to testing... 
    Senior

    The Logical Answer

    McLean, VA
    4 days ago
  • $170k - $210k

     ...Job Description Job Description Salary: $170,000 - $210,000 Position Summary Senior Software Engineers lead the design, development, and delivery of complex software systems in support of the customer's requirements. Senior Software Engineers take ownership of... 
    Senior

    Catalyst Operations & Analytics

    Vienna, VA
    17 days ago
  • $161.8k - $184.6k

    Senior Software Engineer - Full Stack Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part... 
    Senior
    Full time
    Part time
    Internship
    H1b
    Local area

    Capital One Financial Corporation

    McLean, VA
    1 day ago
  •  ...service provider, we offer our customers the entire portfolio of IT and web services: From the initial idea to operation - we develop software, design architectures and bring solutions to the cloud, support in creative topics or hosting. With 20 years of experience in the... 
    Senior
    Work at office
    Flexible hours

    PRODYNA

    Vienna, VA
    5 days ago
  •  ...Senior Software Engineer Ampcus Inc. is a certified global provider of a broad range of Technology and Business consulting services. We are in search of a highly motivated candidate to join our talented team. Location: McLean, VA. Overview Summary: Do you love building... 
    Senior
    Internship

    Ampcus

    McLean, VA
    5 days ago
  • $157.3k - $215.1k

     ...Senior Software Engineer At Accenture Federal Services, nothing matters more than helping the US federal government make the nation stronger and safer and life better for people. Our 13,000+ people are united in a shared purpose to pursue the limitless potential of... 
    Senior

    Accenture Federal Services

    Vienna, VA
    4 days ago
  •  ...required security standards. Support leadership engagement with senior executives at a public-facing federal agency, offering subject...  ...in Computer Science, Information Technology Management, Engineering, or a related field (or equivalent experience in lieu of a degree... 
    Senior

    Golden Tech Systems Inc

    McLean, VA
    1 day ago
  • $86.8k - $198k

    Full Stack Software Engineer, SeniorThe Opportunity:As a full stack developer, you can resolve a problem with a complete end-to-end solution...  ...to production-ready. This role is more than just coding. As a senior full stack developer at Booz Allen, you’ll use your passion... 
    Senior
    Full time
    Contract work
    Part time
    Work at office
    Local area
    Remote work

    Booz Allen Hamilton

    McLean, VA
    3 days ago
  • $140k - $185k

     ...SaaS environment - 100% remote A Bit About Us Our company, a leading name in the IoT industry, is on the hunt for a Senior Software Engineer to join our dynamic team. This is a fantastic opportunity for a seasoned professional with a minimum of 5 years of experience... 
    Senior
    Local area
    Remote work
    Work from home

    Jobot

    McLean, VA
    2 days ago
  • $126k - $248k

     ...product which allows users to deploy fault-tolerant, globally distributed MongoDB clusters in just minutes. We're seeking a Senior Software Engineer to join our Developer Tools Team within the Database Experience department. The team is responsible for tools which allow... 
    Senior
    Local area
    Remote work
    Worldwide
    Flexible hours

    MongoDB

    Vienna, VA
    2 days ago
  • We are seeking a Senior Software Engineer to join our team. Working at NT Concepts means that you are part of an innovative, agile company dedicated to solving the most critical challenges in National Security. We're looking for the best and the brightest to join us in... 
    Senior
    Remote work

    NT Concepts

    Vienna, VA
    1 day ago
  •  ...security focused agencies within the Department of Defense and U.S. Intelligence Community. We are seeking to hire a Senior Software Engineer to our team! Client: CTEC develops and delivers innovative customer-centric technologies and solutions that support the... 
    Senior
    Work experience placement
    Work at office

    CyberMedia Technologies

    McLean, VA
    more than 2 months ago
  • $500 per month

     ...Job Description Job Description TLA is seeking a Software Engineer to design, develop, and integrate secure computing environments that support critical mission objectives. In this role, you’ll contribute to the full software lifecycle—from architecture and development... 
    Senior
    Temporary work
    Immediate start
    Flexible hours

    TLA-LLC

    McLean, VA
    12 days ago
  • $129k - $193k

     .... Join an organization where your work contributes to a greater purpose. Position Overview Freddie Mac is seeking a Software Engineer Senior to execute for one or more agile delivery teams. This role is for an experienced engineer who can independently drive solution... 
    Senior
    Full time
    Work at office
    Local area

    Freddie Mac

    McLean, VA
    4 days ago
  •  ...Software Engineer Opportunity At Range At Range, we're building towards a world where anyone can live the financial life they imagine for themselves. If that sounds like a mission you want to be a part of, let's create it together. We're building AI-powered wealth management... 
    Senior

    Range

    McLean, VA
    2 days ago
  •  ...Software Engineer, Senior Are you looking for more than just a seat on a contract? Are you tired of big-box defense contractors where your contributions get lost in layers of bureaucracy? At Skyline Scientific, your skills will shape the future. Skyline Scientific... 
    Senior
    Contract work
    For contractors
    Relocation package

    Skyline Scientific Inc

    McLean, VA
    1 day ago
  • $170k - $244.9k

     ...results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. Senior Software Engineer, Snowflake Natsec Running Snowflake in public sectors in different countries and regions, even in different industry... 
    Senior
    Contract work
    Flexible hours

    Snowflake Computing

    McLean, VA
    1 day ago
  •  ...Senior Agentic Software Engineer Why choose between doing meaningful work and having a fulfilling life? At MITRE, you can have both. That's because MITRE people are committed to tackling our nation's toughest challenges—and we're committed to the long-term well-being... 
    Senior
    Internship
    Local area
    Immediate start

    MITRE

    McLean, VA
    5 days ago
  • $130k - $160k

     ...Job Description Job Description Position Overview Sightline Systems is seeking a Senior Software Engineer to serve as the technical lead for our core development team. This is a leadership role: you will set the technical direction, own architectural decisions,... 
    Senior
    Full time
    Remote work
    Relocation
    Flexible hours
    Shift work

    Sightline Holdings Corp.

    Fairfax, VA
    20 days ago
  • $199k

    DescriptionSoftware Engineer - Mid-Level & Senior-Level (2 Openings)Summary:We are hiring for two (2) Software Engineer positions at the Mid-Level and Senior-Level. These roles will support the design, development, implementation, and maintenance of enterprise-scale, dynamic... 
    Senior

    ActioNet

    Vienna, VA
    1 day ago
  • West Creek 4 (12074), United States of America, Richmond, VirginiaSenior Software Engineer, Full Stack (Remote-Eligible)Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive,... 
    Senior
    Full time
    Part time
    Internship
    Local area
    Remote work

    Capital One

    McLean, VA
    5 days ago
  •  ...About this role: Wells Fargo is seeking a Senior Software Engineer for the Infrastructure Automation and DevSecOps group, on the Infrastructure Engineering and Architecture (IEA) team. This role is an individual contributor, developing applications and services to... 
    Senior
    Work experience placement
    Remote work
    Relocation package

    Wells Fargo

    McLean, VA
    17 hours ago
  • $130k - $190k

     ...BCubed Engineering, an Auria company, is looking to hire a Senior Software Engineer for our Stoic Warrior program. This position is hybrid with up to four days per week on-site. The Senior Software Engineer will develop new software capabilities for a system that automates... 
    Senior
    Full time
    Temporary work
    Work at office
    Flexible hours
    2 days per week
    3 days per week

    Auria

    Fairfax, VA
    2 days ago
  • $127k - $191k

     ...their career path? We are searching for a highly innovative Senior Developer to join our team. Interested in learning more? Read...  ...of it! You will get to show off your skills as a full stack software engineer, and will influence outcomes, guide transformation, and put your... 
    Senior
    Shift work

    Freddie Mac

    McLean, VA
    4 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Software Engineer. Be the first to apply!