Backend Engineer

• This contract position will work with the Traffic Office and the Technology Services Division’s (TSD) Application Modernization Team under the Enterprise Applications Modernization team to modernize the TSMS application to a cloud-first web application.
• This contract position serves as an Application Developer, working independently and with others to analyze, design, develop, and test a new TSMS application for CLIENT.
• The duties include application development, database design, data schema mapping, testing, deployment, troubleshooting, and problem resolution in an iterative and interactive style of development.

Application Developer – C#, ASP.NET, MVC

Full-stack Engineer

• Collaborating effectively across software portfolio of products deployed in field, edge and customer IT/OT environments globally
• Facilitate and drive architectural strategy and hands on activities across GridOS Plan product lines
• Lead technical vision and strategy, planning and execution of best practices
• Architect Cloud-Native Applications: Design and evolve distributed systems using micro-services, containers, Kubernetes, serverless, and modern DevOps practices
• Mentor Senior Architects and Engineers, providing technical leadership, coaching, and architectural guidance across multiple teams

Principal Software Architect

• Own moderate to high complexity problems that span multiple cloud services, where tradeoffs, failure modes, and non-obvious interactions must be identified and resolved.
• Operate effectively when requirements evolve during execution, providing technical judgment that keeps delivery on track.
• Influence technical decisions and design direction beyond your immediate team, serving as a trusted technical voice in cross-service discussions.
• Lead the end-to-end design and delivery of complex, cloud-native services — from requirements analysis through production operation.
• Anticipate and proactively address non-functional requirements including operational readiness, security, performance, and testability.
• Drive work through ambiguity, decomposing unclear or shifting requirements into actionable, well-sequenced plans.
• Use AI tools (e.g., Claude, Copilot) as a core part of your daily workflow — for code generation, design exploration, debugging, code review, incident analysis, and knowledge retrieval.
• Author and maintain markdown skill files that codify repetitive workflows, runbooks, and best practices, enabling consistent and efficient execution across the team and reducing tribal knowledge.
• Actively contribute to incident response, root cause analysis, and preventative improvements, helping the team build increasingly resilient systems.
• Own and improve on-call practices and runbooks for services you design and deliver.
• Design services that are scalable, secure, and testable by default.
• Debug complex, multi-service issues that cross team and domain boundaries.
• Raise the testing and code quality bar through code review, pairing, and leading by example.
• Proactively address performance, reliability, security, and maintainability concerns in every phase of development.

Senior Software Development Engineer

• Design, implement, and test features that span multiple product areas and deliver meaningful impact to customers.
• Take full ownership of features from initial design through development, testing, code review, and launch readiness.
• Build scalable, high-performing web applications using Java-based technologies for the backend and modern JavaScript frameworks for the frontend.
• Develop RESTful APIs and integrate them with the frontend.
• Collaborate closely with colleagues across teams and time zones on technical designs, exploratory work, and cross-functional initiatives.
• Take part in the team's on-call schedule to troubleshoot complex issues in real time and maintain service reliability.
• Engage with Product Managers, Architects, senior engineers, and cross-functional stakeholders to translate customer needs into prototypes and production-ready solutions.
• Champion engineering excellence — leading with design documentation, rigorous testing, and constructive code reviews.
• Break down intricate business challenges into scalable, well-crafted solutions that are delivered with quality.

Software Engineer - LMTS

• Help modernize how a federal regulator validates financial data in XBRL
• Develop Arelle plugins and extensions to enforce validation rules
• Build validation pipelines across the full XBRL stack

Senior XBRL, Arelle Engineer

• Help automate how a federal agency handles a high-volume stream of filer applications
• Turn a manual, document-heavy process into an intelligent pipeline using OCR and AI
• Build document-intelligence services that pull structure and meaning out of filings
• Develop validation and review, exact and fuzzy matching, business rules, and human-review workflows

Software Developer

• Build the backend that powers how a federal agency processes its filer applications
• Develop backend services and REST APIs in Python and FastAPI
• Use AWS services (Lambda, Step Functions, API Gateway, S3) and PostgreSQL
• Help spin up new capabilities, tools, and lines of business

Software Engineer

• Build high-quality software packages for our patching platform, including installer metadata, detection logic, and automation scripts.
• Analyze vendor installers (MSI, EXE, custom frameworks) to determine silent install parameters, upgrade behavior, and OS compatibility.
• Automatically detect new software versions from vendor websites.
• Develop endpoint-side scripts to download, install, upgrade, and verify third-party applications.
• Research vendor release patterns, installer technologies, and best practices for secure and reliable patching.
• Define and maintain packaging standards that improve consistency, reliability, and security across all supported applications.
• Continuously enhance our package catalog to reflect evolving IT and security requirements.
• Build one-off or urgent automation scripts in response to emerging vulnerabilities, vendor changes, or customer needs.
• Troubleshoot packaging issues, installer failures, and automation edge cases.
• Partner with Support and Engineering teams to resolve customer-impacting issues quickly and effectively.

Junior Software Packaging Engineer

• Serve as the senior technical point of contact for partners integrating with NinjaTrader APIs, providing expert guidance on authentication, endpoints, data models, and architectural best practices
• Partner directly with external engineering teams to debug complex integration issues, conduct code reviews of their implementations, and accelerate time-to-production
• Collaborate closely with Technical Account Managers to deliver a seamless partner experience, translating business requirements into technical solutions and providing real-time support during critical integration milestones
• Diagnose and resolve complex API issues spanning WebSocket connections, REST endpoints, and real-time data feeds, often under time pressure with high-value partners
• Own the quality standard for API support, establishing best practices for troubleshooting, documentation, and partner communication that the broader team can follow
• Build and enhance internal tools, scripts, and diagnostic utilities that improve support efficiency and enable faster issue resolution
• Drive continuous platform improvement by synthesizing partner feedback into actionable recommendations for Product and Engineering, influencing the API roadmap
• Mentor junior team members on technical troubleshooting, partner communication, and maintaining composure in high-stakes situations
• Develop deep expertise in NinjaTrader's evaluation platform, trading systems, and API architecture to provide authoritative technical leadership

Senior Software Engineer I, Evaluation Services

• Design and configure Connected Systems and Integration Objects to consume PeopleSoft web services (REST/SOAP)
• Architect complex Custom Data Types (CDTs) and Record Types
• Develop end-to-end process models that trigger actions in PeopleSoft
• Create Appian Web APIs for real-time data updates or event notifications
• Build intuitive SAIL forms and dashboards
• Implement secure handshakes between systems using OAuth 2.0, SAML, or certificate-based authentication

Senior Appian Developer

Game Engineer

• Lead the design, architecture, and implementation of core gameplay AI systems
• Drive technical direction for NPC gameplay systems and AI frameworks
• Own large-scale AI features from concept through ship
• Identify and resolve performance, scalability, and technical design challenges across gameplay systems.
• Partner closely with Design, Animation, Audio, and Production to define and drive AI feature goals
• Provide technical leadership and guidance across cross-functional gameplay initiative
• Help establish engineering standards and improve team-wide AI development workflows

Senior Gameplay Engineer

• Own features end-to-end across the complete software development lifecycle including AI, spanning requirements gathering, technical design, implementation, testing, automation, deployment, and ongoing operational ownership in production
• Translate customer and business needs into clear technical solutions, making thoughtful trade-offs that balance speed, quality, and reliability
• Design, build, and maintain highly scalable, distributed systems that handle large volumes of data
• Identify and resolve pre-production bottlenecks and production issues, improving system resilience and performance
• Participate in design and code reviews, contributing to shared engineering standards and long-term system health
• Partner closely with product managers, SREs, and cross-functional teams to deliver meaningful customer outcomes
• Participate in a rotating on-call schedule, diagnosing and resolving production issues to ensure reliability and customer trust
• Mentor junior engineers and contribute to a culture of learning, ownership, and continuous improvement

Staff Software Engineer

• Design and build systems that power our automations platform.
• Own major components for processing automated workflows.
• Collaborate closely with DevOps, ML/AI, Customer Success, and UX teams.
• Contribute to the design and evolution of our workflow automation system.
• Implement scheduling, queuing, rate limiting, and retry logic.
• Build components for state tracking, error handling, and cleanup across distributed tasks.
• Enhance observability, structured logging, and deployment automation with DevOps.
• Maintain integrations with SFTP, email, databases, spreadsheets, and REST APIs.
• Develop file processing pipelines handling high data volumes.
• Create and maintain webhook handlers, polling services, and event-driven workflows.
• Own complex backend projects from design through deployment.
• Participate in architectural discussions and help drive maintainability standards.
• Mentor junior engineers through code reviews and technical discussions.
• Participate in incident response and postmortems with a focus on prevention.

Senior Software Engineer, Automations

• Design, develop, test, and deploy new features and enhancements across ReactJS front-end and Python/FastAPI back-end layers.
• Build and maintain RESTful APIs with proper validation, error handling, versioning, and OpenAPI/Swagger documentation.
• Develop responsive, accessible front-end interfaces adhering to CBO UX standards and Section 508 accessibility requirements.
• Implement and manage data models, queries, migrations, and stored procedures in PostgreSQL with attention to performance and integrity.
• Operate within CBO's trunk-based development workflow, committing small, frequent, tested changes with short-lived branches and feature flags.
• Participate in code reviews, sprint planning, and retrospectives, collaborating with CBO engineers, product owners, and analysts.
• Package applications with Docker and support deployment of containerized workloads to AWS (ECS, EKS, or equivalent).
• Investigate and resolve defects, performance issues, and security vulnerabilities across the stack; proactively reduce technical debt.
• Write and maintain automated unit, integration, and regression tests (pytest, Jest, React Testing Library, or equivalent).
• Maintain accurate technical documentation including API docs, data-model diagrams, and architecture decision records.

Full Stack Developer

• Design, implement, and test features that span multiple product areas and deliver meaningful impact to customers
• Take full ownership of features from initial design through development, testing, code review, and launch readiness
• Build scalable, high-performing web applications using Java-based technologies for the backend and modern JavaScript frameworks for the frontend
• Develop RESTful APIs and integrate them with the frontend
• Collaborate closely with colleagues across teams and time zones on technical designs, exploratory work, and cross-functional initiatives
• Take part in the team's on-call schedule to troubleshoot complex issues in real time and maintain service reliability
• Engage with Product Managers, Architects, senior engineers, and cross-functional stakeholders to translate customer needs into prototypes and production-ready solutions
• Champion engineering excellence — leading with design documentation, rigorous testing, and constructive code reviews
• Break down intricate business challenges into scalable, well-crafted solutions that are delivered with quality

• Design, develop, and implement flight software for TeraWave satellite bus subsystems including thermal control, power management, and propulsion control components
• Develop and implement closed-loop control software for spacecraft subsystems, including control algorithms supporting thermal regulation, power distribution, and propulsion management
• Create and maintain software interfaces between spacecraft subsystems to support safe and integrated vehicle operations
• Collaborate with hardware, systems, and autonomy engineers to define software requirements, interfaces, and behavioral boundaries across subsystems
• Develop and integrate simulation environments and models to test FSW across a range of nominal and off-nominal operational scenarios
• Support software architecture, design reviews, and systems engineering trade studies
• Participate in software integration, verification, and validation testing including software-in-the-loop (SIL) and hardware-in-the-loop (HIL) environments
• Support on-orbit operations and troubleshooting of deployed spacecraft
• Mentor junior engineers and contribute to team technical development

Satellite Flight Software Engineer II

• Define and own the architecture of the test software ecosystem including test executive frameworks, abstraction layers, real time control interfaces, and the data pipeline
• Design test software systems for reliability, maintainability, and scalability
• Lead development of test sequencing engines, automated procedure execution frameworks and go/no-go limit checking systems to reduce manual operations
• Own test procedure development, review, and approval workflows from initial draft through qualification and acceptance
• Own integration of test software with hardware interfaces including serial buses, analog/discrete, I/O, RF Equipment APIs, and real time simulation platforms (speedgoat, National Instruments, etc.)
• Develop software interfaces to RF test equipment (signal generators, spectrum analyzers, channel emulators, and GPS/GNSS simulators) to enable automated RF testing, measurement, and screening
• Champion an “automation-first” development philosophy for test software design and implementation
• Partner with electrical test, Hardware-in-the-Loop, and manufacturing engineering teams early in the design cycle to ensure test software integrates seamlessly with production and build sequences
• Define and implement automated report generation, real-time health monitoring, dashboards, and data export pipelines that feed production analytics
• Lead a team of test software engineers and provide technical direction, code review oversight, and mentorship
• Communicate software development status, risks, and milestone readiness to program and engineering leadership
• Coordinate with Avionics, flight software, and system engineering teams to align test software interfaces with evolving vehicle software architecture
• Drive adoption of automated testing for test software itself – unit tests, integration tests, regression suites that validate the test infrastructure prior to touching flight vehicles

Satellite Test Software Lead

• Develop embedded avionics software in C++ with a focus on RFIO or Surveillance & Transponder Systems or Military avionics systems
• Perform DO-178C compliant software development (DAL A preferred)
• Create and manage requirements using DOORS
• Support software certification artifacts (plans, requirements, traceability)
• Conduct code reviews, builds, and configuration management
• Support flight test integration, including interpretation of aircraft wiring/data flows
• Support software testing using Python

Aerospace Software Engineer

• Read and interpret technical drawings, blueprints, and engineering specifications to accurately set up CNC machines.
• Develop, model, and verify cutting paths using CAM software and related verification tools to ensure safe and efficient machining.
• Program CNC machines according to material requirements, tooling needs, and production specifications.
• Adjust toolpaths, feeds, speeds, and machine settings to optimize cycle times while maintaining required quality standards.
• Evaluate and select appropriate cutting tools based on material type, machining strategy, and production goals.
• Manage personal workflow to meet programming deadlines, support production schedules, and minimize machine downtime.
• Complete all required documentation, including program records, setup sheets, revisions, and process notes, in accordance with internal procedures.
• Collaborate closely with Quality and Manufacturing Engineering teams to resolve issues, improve processes, and support continuous improvement initiatives.
• Communicate effectively with supervisors, operators, and other shop personnel to gather data, clarify requirements, and ensure smooth production flow.

CNC Programmer

• Lead the functions that turn customer-impacting events into meaningful engineering and business signals
• Strengthen how Splunk responds to incidents, learns from them, and manages customer escalations
• Drive accountability for recurring issues across engineering, support, field, and business teams
• Collaborate with engineering leaders responsible for developer observability
• Champion resilience and ensure outstanding customer experience with products

Software Engineer jobs in Washington

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Application Developer – C#, ASP.NET, MVC

Principal Software Architect

Senior Software Development Engineer

Software Engineer - LMTS

Senior XBRL, Arelle Engineer

Software Developer

Software Engineer

Junior Software Packaging Engineer

Senior Software Engineer I, Evaluation Services

Senior Appian Developer

Senior Gameplay Engineer

Staff Software Engineer

Senior Software Engineer, Automations

Full Stack Developer

Software Engineer

Satellite Flight Software Engineer II

Satellite Test Software Lead

Aerospace Software Engineer

CNC Programmer

Director, Engineering – SPIE