Backend Software Engineer
Randstad
Senior Backend Engineer
Randstad is seeking a Senior Backend Engineer to architect, develop, and scale mission-critical, cloud-native enterprise services for a premier passenger transportation and rail logistics client based in Washington, DC. Operating in a high-throughput, event-driven ecosystem, you will design robust backend systems using Java 17 and Spring Boot while leveraging an extensive AWS serverless and containerized architecture. This role requires a strong focus on scalability, performance, and reliability.
- ...-Q-Tel. Role Summary You'll build the backend systems that power Twenty's cyber and electromagnetic capabilities-software that ingests real-time operational signals,... ...product features. Collaborate with frontend engineers on API contracts and data structures that...SuggestedFull timeWork at officeFlexible hours
$130k - $160k
...Senior Backend Software Engineer Location: Gaithersburg, Maryland; Alexandria, VA; Chantilly, VA; Aurora, CO; St. Louis, MO; Tucson, AZ Clearance: Top Secret/SCI with the ability to successfully pass a Polygraph Schedule: Full Time Travel: No Remote: No Remote Company...SuggestedFull timeRemote work- Join to apply for the Backend Software Engineer (Remote) role at Jobright.ai Join to apply for the Backend Software Engineer (Remote) role at Jobright.ai Jobright is an AI-powered career platform that helps job seekers discover the top opportunities in the US. We are NOT...SuggestedRemote jobFull time
$65 - $70 per hour
Job Title: Senior Backend Software Engineer Location: Remote Employment Type: Contract Pay Rate : $65 - $70/ hour Benefits: This position is eligible for medical, dental, vision, and 401(k). The Role We are seeking a Senior Software Engineer to play a pivotal role in transforming...SuggestedContract workLocal areaRemote work$145k - $190k
Overview We are seeking a Backend Support Software Developer for a fully onsite role with high visibility, working in direct support of the National Geospatial-Intelligence Agency (NGA). The position focuses on enhancing existing code, integrating backend solutions, and...Suggested- ...Sleeper is a rapidly growing platform for sports fans with messaging at its core. Our backend consists primarily of Elixir and ScyllaDB. We are looking for experienced engineers who have a passion for building multi-player games or messaging products to help us bring Sleeper...
- ...workflows, identify operational gaps, and build scalable technical solutions Develop reusable frontend components and scalable backend architectures following best practices Work with relational and NoSQL databases including PostgreSQL, MySQL, MongoDB, and DynamoDB...Full timeMonday to Friday
- ...Backend Software Engineer with strong C++ development experience and familiarity with real-time operating systems (RTOS) to support advanced counter-UAS (CUAS) systems. This role focuses on building high-performance backend components that interface with real-time systems...
- ...Accrete Ai Software Engineer Position Accrete is a dual-use AI software company that licenses its Knowledge Engine Platform and Expert... ...common architectural components like: caching, operational data backends, distributed application orchestration ~ Strong experience...Immediate start
- ...Catalyst, and In-Q-Tel. Role Summary You’ll design and build backend systems that turn real-time operational data into mission-... ...technical execution, and raise the bar through mentorship and engineering standards. You’ll partner closely with product, operations, and...Full timeWork at officeFlexible hours
- DLA Piper is seeking a Sr. Aderant Engineer to administer, customize, integrate, and deploy Aderant Expert across the firm’s financial... ...management operations. You will own data integrity, governance, and the backend architecture that supports billing, timekeeping, rate...
$99k - $225k
Backend Infrastructure & Agentic AI Software Engineer The Opportunity: The GRACE team at ARPA-H is building the next generation of agentic AI to transform how the agency accelerates research, makes decisions, and ships products at scale. GRACE is ARPA-H's production AI...Full timeContract workPart timeWork at officeLocal areaRemote work$120k - $160k
...implement, and maintain core application software for our customer on-site in Arlington,... ...applications. Develop and maintain backend services using .NET Core and .Net... ...solutions in mission IT, enterprise IT, engineering services, and professional services. We...Work experience placement- ...About the Role We're looking for a backend engineer who's excited to build the infrastructure behind cutting-edge AI development tools. Under the hood, Braintrust is a real-time, high-availability data platform that operates in both SaaS and self-hosted environments...Flexible hours
$145k - $190k
A leading technology firm in Virginia is seeking a Backend Support Software Developer for an onsite role supporting the National Geospatial-Intelligence Agency (NGA). The ideal candidate will have expertise in Python, C#, and/or Java, with responsibilities including troubleshooting...- ...Senior Software Engineer – Backend Anywhere Type: Permanent Category: Engineer Industry: Technology Workplace Type: Remote Reference ID: JN -052026-106925 Date Posted: 07/10/2026 Shortcut: Description Recommended Jobs Description:...Hourly payPermanent employmentFull timeLocal areaRemote work
- ...successfully obtain a Public Trust Clearance! Responsibilities Work with project manager or product owner to analyze user needs and develop software solutions Create software and well-commented code that meets requirements Participate in ongoing operational support of production...Permanent employmentInternshipRemote work
- Mapbox is seeking an experienced engineer for the Search Data team to build scalable backend systems and data pipelines. You will work with terabytes of telemetry and geospatial data, ingesting it via batch and streaming systems on AWS, and collaborating with cross‑team...
- ...Backend Focused Staff Engineer Northwood Space is looking for a backend focused Staff Engineer to join our Software team. In this role, you will lead the development of our cloud-based platform that manages global antenna scheduling, customer booking, and service provisioning...Permanent employment
$50 per hour
A technology solutions provider is seeking a Mid Backend Java Developer to design and develop Java-based applications. The role involves maintaining Java/J2EE applications with a focus on REST/JSON and working in an Agile environment. The ideal candidate will have strong...Remote job- Dev Technology Group is seeking a Mid-Level Backend Developer (AWS) in Washington, DC. This role involves developing backend services and participating in all software development stages from requirements gathering to deployment. Applicants should have at least 5 years...Remote jobFlexible hours
$137k - $200.2k
MAXAR TECHNOLOGIES, INC. is seeking an experienced API/Java/Python Developer to join its team in Washington, DC. The role focuses on developing high-performance, API-driven services, ensuring secure coding practices, and collaborating with multidisciplinary teams to implement...- ...SQL Build React‑based user interfaces and integrate them with backend APIs and services Support Power Platform solutions, including Power... ...Qualifications Active Secret Clearance 5+ years of full stack software development experience Experience with .NET, C#, ASP.NET MVC,...Full time3 days per week
- ...building and enhancing customer-facing software that supports control systems across existing... ...’s degree in computer science, software engineering, or related 3+ years of software... ...Experience integrating frontend apps with backend application services Relational (MySQL,...Work at officeRemote work
$60 per hour
job summary: The Senior Backend Software Engineer will be responsible for the analysis, design, and development of mission-critical, cloud-native enterprise services for a leading passenger rail transportation client. This role involves designing and building robust,...Hourly payContract workTemporary workWork experience placement- ...Frontend Development: Proficient in Angular, with strong UI/UX skills. Backend Development: Proficient in either Java or .NET for REST API development. AI/ML Orchestration: Strong experience in Python, with a focus on machine learning, LLMs, and AI orchestration. Data...
- ...Full Stack Web Developer to join our team. This role will perform software application development in support of an enterprise-wide data... ...management best practices Experience with front and backend software development Familiarity with Unix based command line An...Full timeFlexible hours
- ...strong proficiency across frontend and backend technologies, APIs, and cloud-native development... ...UX designers, architects, and DevOps engineers to deliver integrated solutions. Conduct... ..., or related field. 3 years of software development, 1 year full‑stack. Demonstrated...Full timeContract workRemote work
- ...SGS) is seeking an experienced Full Stack Software Developer to support the Congressional... ...maintenance of web applications and supporting backend services that sustain CBO's internal... ...close coordination with CBO's internal engineering team. Responsibilities Application...Full timeWork at officeLocal area
$142.3k - $175k
...This is full stack work in the truest sense. We need engineers who move fluidly between backend logic and frontend polish, who care as much about a clean... ...security controls and their practical application to software design Multi‑classification or cross‑partition...Live inWork at officeLocal areaDay shift
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