Backend Developer
Aretum
Backend DeveloperPublic Trust Eligibility RequiredThis is a contingent position, meaning employment is dependent upon the successful award of the associated contract to Aretum and completion of any required background investigation or security clearance verification.About AretumAretum is a mission-driven organization committed to delivering innovative, technology-enabled solutions to our customers across defense, civilian, and homeland security sectors. Our teams work at the intersection of strategy, technology, and transformation, helping agencies solve their most critical challenges. We believe in investing in our people and creating a culture where collaboration, inclusion, and professional growth are at the forefront.Job SummaryAretum is seeking a skilled and motivated Backend Developer. As a Backend Developer you will be responsible for providing expert technical support, maintenance, and enhancement of a client application within an Agile, sprint-based development environment. The ideal candidate leverages strong backend development expertise in Python, AWS, RESTful APIs, databases, and scalable data solutions to ensure application performance, availability, and integration with TypeScript-based front-end components.Due to the nature of our work as a federal consulting organization, employees may be expected to handle Controlled Unclassified Information (CUI) and must adhere to applicable safeguarding and compliance requirements.ResponsibilitiesProvide expert technical support to maintain the client applicationProvide support for development, enhancements, accessibility, integration, optimization, and maintenanceEnsure availability and correct operationsWork within a sprint-based development cycleUtilize knowledge of the AWS cloud environment, Python backend and TypeScript front-end
$119k - $161k
...Experience: 8 + years of related experience US Citizenship Required: Yes Job Description: Position Summary The Backend API Developer builds and operates the service layer behind an operator application in a cyber command center supporting national cyber defense...SuggestedFull timeContract workTemporary workImmediate startWorldwideFlexible hours- ...BackEnd DeveloperWe are seeking a BackEnd Developer to become an integral part of our team! You will be responsible for creating and modifying computer application software or specialized utility programs.Responsibilities:Analyze user needs and develop software solutionsWork...Suggested
$90k - $150k
...Senior Backend DeveloperLocation: Falls Church, VA (on-site in office, with partial telework flexibility) Full-Time | Permanent Salary... ...: $90,000.00 ~ $150,000.00 BizFlow is seeking a Senior Backend Developer to build the integrations at the center of a large-scale enterprise...SuggestedPermanent employmentFull timeWork at officeRemote work- ...Python Backend DeveloperLocation: Hybrid onsite (3 days onsite in Mclean, VA)Duration: 9-12+ months ContractJob Description:Experience with AWS Cloud - EC2/S3/Lambda etc..Experience with Data LakeExperience with DBs- Oracle/DB2/Mongo/SQL Server/NoSQLJava experience is...Suggested
- ...Python Backend Developer Location: Hybrid onsite (3 days onsite in Mclean, VA) Duration: 9-12+ months Contract Job Description: Experience with AWS Cloud - EC2/S3/Lambda etc.. Experience with Data Lake Experience with DBs- Oracle/DB2/Mongo/SQL Server...SuggestedContract work
- ...Backend Java Developer Vienna, VA – hybrid (3 days a week onsite) Pay Rate: Open to Both C2C and W2 options Position Type: Multiyear Contract We're seeking a curious, technically minded professional who loves solving complex problems, understands how great software...Contract work3 days per week
- ...Overview: Position Title * Sr. Backend Java Developer Position Responsibilities Role: Senior Backend Java Developer Location: McLean, VA - Onsite (5 days/week) | Local candidates only Key Responsibilities Design, build, and maintain backend services...Local area
- ...Senior Java Backend DeveloperLocation: McLean, VA (Onsite – In-Person Interview Required) Duration: Contract (July 20, 2026 – December... ...Summary: We are seeking a highly experienced Senior Java Backend Developer to join the Loan Portfolio Management and Structuring (LPMS)...Contract work
- Java DeveloperThe resource performs high complexity (i.e. system level applications) analysis, design, development and unit testing of software applications from user requirements/stories and design documents. The candidate also resolves defects encountered during various...
- ...An established financial services organization is seeking a Senior Backend Java Developer for a hybrid opportunity in Vienna, Virginia. This role focuses on designing, developing, and supporting scalable backend services and APIs that power modern digital banking experiences...Monday to FridayShift workDay shift3 days per week
- ...Backend Engineer - (Mid-Level / Senior)Pelagic AI is seeking Backend Engineers of varying levels of experience to support the development, integration, and deployment of advanced intelligence capabilities into test and operational environments. You will be a member of...
- ...Senior Backend DeveloperApex Systems is looking for a Sr. Backend Developer to join the leading financial regulatory authority, who was voted the #1 Mid-Size Technology Company to work for in the country.The Sr. Backend developer will be responsible for hands-on software...
$86.8k - $198k
...than just a nice-looking interface and data. You need the right combination of clean code, APIs, analytics, and infrastructure to develop a user-focused solution. We’re looking for a software engineer like you to develop efficient and effective software, from vision to...Full timeContract workPart timeWork at officeLocal areaRemote work- ...Backend EngineerJersey City, New Jersey, United States; McLean, Virginia, United States; Richmond, Virginia, United StatesExiger transforms... ...world a more transparent place to succeed. Our focus lies in developing SaaS solutions that play an active role in combatting human...Full timeWork at officeWork from home2 days per week1 day per week
- ...Job Description Job Description Duties May Include: Build backend services that power geospatial processing, automation, and user-facing capabilities Develop APIs, proxies, and integration services using Node.js and Python Create and maintain backend tooling...Contract workTemporary work
$110k - $115k
...Application Developer II ROLE We need an experienced Back End Application Developer at the Naval Dosimetry Center (NDC) in Bethesda... ...compliance. In this role, you will architect and sustain the backend engine powering NDC's mission-critical systems, building and maintaining...Full timeWork at officeWorldwide$61.93k
...Viderity is seeking a Backend Developer with experience in developing J2EE applications using REST/JSON, Spring, SpringBoot, J2EE. Designs, develops, and implements web-based Java applications to support business requirements. Follows approved Agile life cycle methodologies...Full time- ...Trustible in Arlington, VA is hiring a Senior Software Engineer to build out our backend and agentic AI capabilities. This is a backend-heavy role focused on MCP tool integrations, data pipelines, and infrastructure that enables AI agents to act reliably within our platform...
- ...Senior Backend EngineerThe Platform team is the engine room of Antithesis — we own the infrastructure, services, and tools that are at the core of the product. As a Senior Backend Engineer here, you won't be maintaining someone else's abstractions. You'll be designing...Contract work
$85k - $170k
...Backend Software EngineerAs a Backend Software Engineer, you will work on modernizing legacy enterprise systems by decomposing monolithic... ...monolithic services into modular Python microservicesDesign, develop, and deploy concise Python REST APIs and batch service...- ...Active Clearance Required Role Summary You'll build the backend systems that power Twenty's cyber and electromagnetic... ..., with NATS) to process real-time operational data streams. Develop and maintain automated tests to protect correctness, security,...Full timeContract workFlexible hours
- You will work across wallet infrastructure, failure modes, and observability, collaborating with product managers to deliver reliable, auditable finance-grade software. The role offers remote work options and a culture of high accountability and impact. #J-18808-Ljbffr...Remote work
- Exiger is seeking a Senior Software Engineer to design and develop software projects in McLean, VA. This role involves creating and maintaining APIs, collaborating with cross-functional teams, and automating processes. Candidates should have 6+ years of programming experience...Flexible hours
- Key Responsibilities Design, develop, and maintain scalable full stack web applications using Ruby on Rails and modern frontend technologiesBuild... ...solutionsDevelop reusable frontend components and scalable backend architectures following best practicesWork with relational and...Full timeMonday to Friday
- ...internal business requirements or external customers. Standardizes the quality assurance procedure for software. Oversees testing and develops fixes. May require a bachelor's degree in a related area and at least 5years of experience in the field or in a related area. Has...Immediate start
- ...Description Job Description Role Summary We are looking for a Backend Engineer to build core backend services for a predictive... ...security response workflows. Key Responsibilities Design and develop scalable backend services using Python/FastAPI or similar...
- ...motivated candidate to join our talented Team.Job Title: Golang Backend EngineerLocation(s): McLean, VAAs a Golang Backend Engineer,... ...customer-facing use, ensuring secure and efficient data transmission.Develop internal services to streamline configuration management,...
- Responsibilities End-to-end software development including analysis, planning, architecture, design, development, automated testing, deployment, and maintenance using industry best practices and security standards. Performance optimization - analyze system...
- ...Backend EngineerLocation: RemoteDuration: ContractRequired/Desired Skills:Extremely Strong 7+ Years of Experience with Node.js EngineerVery Strong Many REST APIs based Development/AutomationEngineer will need to provide Operations Support for Backend E2E Tools as wellVundru...
- ...nice to have).Languages: Golang, Python, Node.js, Angular / Vue, Java.DevOps: New Relic, Git, Jenkins, GitHub, Jira, PagerDuty, etc.Backend data experience contributing to platforms in a federated manner.Data experience building ETL using tools such as Lambda, EMR, Glue,...
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