Senior Backend Engineer - Java/Python, High-Impact APIs
COMFORT SYSTEMS
A technology services company is seeking a Backend Software Engineer to develop scalable backend services and RESTful APIs in Alexandria, VA. Candidates should have 8–12 years of experience in backend engineering, a Bachelor’s degree in Computer Science or related field, and U.S. Citizenship. The role requires proficiency in Java or Python, SQL, and Linux environments, coupled with an active TS/SCI clearance. Strong problem-solving abilities are essential. Opportunities for career growth await the right candidate. #J-18808-Ljbffr COMFORT SYSTEMS
- ...Senior Backend/API Engineer Everforth ECS is seeking a Senior Backend/API Engineer to work in the National Capital Region covering the Pentagon... ...across NIPR, SIPR, and JWICS mission environments, delivering high-assurance, Zero Trust-aligned API access to production AI/...SeniorContract work
- ...We're a small, senior-only team moving fast... ...ability to offer high cash compensation,... ...while we make Day 1 impact on global... ...re seeking a Staff Backend Engineer to lead our core product... ...backend serves a REST API that powers our... ...Our backend is a Python (FastAPI) monolith...SeniorFlexible hours
$130k - $160k
...Senior Backend Software Engineer Location: Gaithersburg, Maryland; Alexandria... ...has meaning and impact on the world around... ...of a long-term, high-visibility program.... ...developing RESTful APIs, integrating data sources... ...services using Java or Python • REST API Development...SeniorFull timeRemote work- ...provider is seeking a Software Engineer Level 5 in Washington, D... ...should have a strong backend development background,... ...in data engineering and API development. Proficiency in languages like Python and frameworks like... ...emphasizes scalable and high-performance solutions in...Senior
$130k - $165k
Axios is seeking a Software Engineer in Washington, DC to develop high-quality services leveraging Golang and Python. The role involves designing scalable REST APIs, ensuring service reliability, and collaborating with diverse teams to enhance Axios' systems. Candidates...Suggested$130k - $145k
...Senior Software Engineer - Backend (Java) Location: Remote with Preference for Greenbelt,... ...organizations to deliver scalable, impactful digital services. Using... .... Committed to High Expectations and a Welcoming... ...Build and support RESTful APIs and distributed system integrations...SeniorWork at officeRemote workFlexible hours- Employee Navigator, a leading SaaS provider, is seeking a Senior Backend Engineer to design and maintain APIs for their benefits enrollment platform. The role... ...paced environment. This position offers a chance to impact the user experience for millions across numerous...Senior
- A mission-driven engineering firm in Alexandria, VA, seeks an experienced SQL Engineer SME to... ...queries, optimizing performance, and ensuring high-quality datasets. Candidates should have... ...to work on significant projects that impact organizational decision-making. #J-18808-...Senior
- ...solutions provider is seeking a Software Engineer Level 4 to develop and maintain... ...software systems. This role will focus on backend development using Python and FastAPI, along with managing PostgreSQL databases and high-performance API integrations. Candidates must have...Senior
- A leading IT solutions provider in McLean, VA is seeking a Software Engineer for a full-time remote position. Responsibilities include designing backend systems, developing APIs with Django and Python, and managing databases. Candidates should have 5+ years of full stack...SeniorFull timeRemote work
- ...Everforth ECS is seeking a Backend/API Engineer to work in the National Capital Region covering... ...Combatant Commands, Joint Staff directorates, Senior Executive Service leaders, and... ...and interface contract definition. • Highly developed interpersonal and oral/written...Contract work
$85k - $170k
...located in McLean, Virginia, seeks a skilled Backend Software Engineer to modernize enterprise systems by transforming... ...cloud-native solutions. The role emphasizes Python development, requiring a strong background in REST APIs and Agile practices. You will use AWS Lambda...Senior- ...looking for a Software Development Engineer III to join its Maps API team in Washington, DC. You... ...mapping tools while ensuring high reliability and performance... ...8-10+ years of experience in backend services development and proficiency in Python, Typescript, and AWS...SeniorRemote job
$88.2k - $190.9k
...- Permanent Full Time Title API/Java/Python Developer, SME TS Clearance... ...Category Software Development / Engineering City Arlington, Virginia,... ...your knowledge on a highly collaborative team to deliver... ...often involves a combination of backend development, API integration...Permanent employmentFull timeLocal area- ...Summary You'll build the backend systems that power Twenty's... ...complex relationships, and serves high-throughput APIs at machine speed. You'll... ...that have real-world impact, especially in national security... ...Collaborate with frontend engineers on API contracts and data structures...SeniorFull timeWork at officeFlexible hours
$130k - $190k
...Backend Engineer Nitra's mission is to build a more efficient... ...ambition. The bar is high because the... ...place. If you want impact, ownership, and the chance... ...Governors, White House senior staffers, and a co-founder... ...database schemas and APIs for small-to-medium scoped...SeniorFull timeWork at officeWork from home- ...seeking a remote full-stack developer for their C#/.NET team. The ideal candidate is a mid or senior-level developer with over 5 years of C# experience. This role emphasizes high-quality solutions and offers flexible working hours. You'll start on a six-month contract...SeniorContract workRemote workFlexible hours
$122k - $182k
Fairygodboss is seeking an experienced Python developer to join their Financial Engineering Team in McLean, Virginia. You will play a vital role in building high-performance and scalable... ...responsibilities including developing RESTful APIs and implementing automated testing...Senior$99.6k - $223.4k
...platforms. This is a hands-on, high-impact role where you will shape... ...production delivery. Drive engineering excellence through code... ...distributed systems. ~ Strong Java plus Python/Shell scripting. ~... ...for complex systems. ~ REST APIs, JSON/XML knowledge. ~ SQL...SeniorFull timeTemporary workRemote workFlexible hours$100k - $230k
...Staff Engineer At GEICO, we offer a rewarding career... ...expectations while making a real impact for our company through... ...organization with API first design. The ideal... ...problems Deliver High-Quality services and... ...microservices using graphQL, gRPC, Java, Python, Kafka, with a deep...Hourly payWork experience placementLocal areaFlexible hours- ...Backend Engineer At Twenty, we're taking on one of the... ...outcomes that directly impact national security. We... ...environments. You'll make high-leverage architecture... .... Define stable APIs for internal and... ...object-oriented language (Java, Kotlin, C#, Python) or systems language...Full timeWork at officeFlexible hours
$110.31k - $155.08k
...Passionate about coding in Java and ready to take on... ...to innovate and build high-impact solutions. If you\'re driven... ...and develops RESTful APIs and integrates with... ...Quality Assurance (QA) engineers, and other members of the... ...and guidance to less senior developersCompensation...SeniorPermanent employmentTemporary workLocal areaRemote work$100k - $215k
...Senior Software Engineer At GEICO, we offer a rewarding... ...while making a real impact for our company... ...We are seeking a highly motivated Senior... ...using React JS and Java, working with... ...frontend and Java for backend services Build... ...secure RESTful APIs and reusable components...SeniorHourly payWork experience placementLocal areaFlexible hours- ...Senior Api/Connector Engineer Everforth ECS is seeking a Senior API/Connector Engineer to work in the... ...serving engineers, pipeline specialists, backend developers, and cybersecurity teams... ...the most appropriate solution. • Highly developed interpersonal and oral/written...SeniorContract work
$102k - $152k
Freddie Mac in McLean, Virginia is seeking a skilled project management professional to drive high-impact programs in the SF Acquisitions division. This role involves managing multiple projects, developing business cases, and collaborating with various teams to ensure successful...Senior- ...design development, and collaboration with clients, architects, and engineers across multiple phases of interior design projects. Ideal... ...leadership potential. The position offers an opportunity to work on high-end projects within a creative, collaborative studio...Senior
$105k - $125k
...Mid-Level Backend Software Engineer Location: Gaithersburg, Maryland... ...work has meaning and impact on the world around... ...of a long-term, high-visibility program.... ..., developing RESTful APIs, and supporting data-... ...application components using Java or Python • REST API...Full timeRemote work$87.1k - $157.45k
...your skills in backend development,... ...mission‑driven engineering , and you’re ready... ...making real impact. If you take pride... ...visibility at senior levels, you’ll... ...to support a high‑visibility, data... ...develop RESTful APIs, support data‑driven... ...using Java or Python REST API Development...Local areaImmediate start- ...As a Senior Full Stack Java Developer , you will be responsible for designing... ...Your primary focus will be on backend development using Spring... ...requirements and implement high-performance, full-stack solutions... ...and maintain RESTful APIs and microservices using Spring...Senior
- ...Global Systems is seeking a Backend Software Engineer to own and evolve the Target... ...merge) Build and maintain REST APIs with strict latency SLOs (... ..., BLE, LoRa, LTE) Maintain high-quality test coverage and... ...backend development experience (Python, FastAPI) Experience...Work visa
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