{"id":1928598,"url":"https://alion.io/job/infinitive-senior-consultant-full-stack-api-developer-infinitive-inc","title":"Senior Consultant, Full Stack API Developer - Infinitive Inc","company":{"id":3856688,"name":"Infinitive","domain":"infinitive.com","url":"https://alion.io/company/infinitive","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"JazzHR","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["McLean, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":132000,"max_usd":242000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":2745},"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Anthropic","optional":false},{"name":"Apache Kafka","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"Claude Code","optional":false},{"name":"Docker","optional":false},{"name":"FastAPI","optional":false},{"name":"Flask","optional":false},{"name":"GCP","optional":false},{"name":"Git","optional":false},{"name":"GraphQL","optional":false},{"name":"gRPC","optional":false},{"name":"Java","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"Micronaut","optional":false},{"name":"Python","optional":false},{"name":"RabbitMQ","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"Swagger","optional":false},{"name":"JavaScript","optional":true},{"name":"LLM","optional":true},{"name":"RAG","optional":true},{"name":"React.js","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-05T21:05:10Z","employer_posted_date":"2026-10-05","last_verified_at":"2026-10-08T00:55:35Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"**This is a hybrid role\nAbout Infinitive\nInfinitive is a data and AI consultancy that helps clients modernize, monetize, and operationalize their data to generate lasting value. They pride themselves on their deep industry and technology expertise, ensuring that they drive and sustain the adoption of new capabilities. Infinitive is committed to aligning their team with their clients' culture, ensuring a successful partnership by bringing the right mix of talent and skills for high return on investment.\nInfinitive has earned recognition as one of the \"Best Small Firms to Work For\" by Consulting Magazine, receiving this accolade nine times, most recently in 2026. They have also been honored as a “Top Workplace” by the Washington Post, “Best Places to Work” by the Washington Business Journal, and “Best Places to Work” by Virginia Business.\nPosition Overview\nWe are looking for a skilled Full Stack API Developer to join our consulting engineering team. In this role, you will architect, build, and optimize enterprise-grade APIs and microservices while delivering intuitive end-user interfaces.\nYou should possess strong, production-tested experience in both Python and Java, along with a proactive approach to modern AI-assisted engineering workflows-specifically leveraging Claude Code (Anthropic's agentic CLI tool) and related AI tooling to accelerate development, refactoring, and code review cycles.\nKey Responsibilities\nAPI & Backend Engineering: Design, build, and maintain highly scalable, secure, and resilient RESTful and event-driven APIs using Python (e.g., FastAPI, Flask) and Java (e.g., Spring Boot, Micronaut).\n\nFull Stack Integration: Connect robust backend endpoints with responsive frontend interfaces and client-facing web applications.\n\nAI-Accelerated Development: Integrate agentic AI tooling-specifically Claude Code -into your daily developer workflows for code generation, test coverage expansion, refactoring, documentation, and automated debugging.\n\nData & Cloud Integration: Interface with modern relational and NoSQL databases, message queues/streaming platforms (e.g., Apache Kafka, RabbitMQ), and cloud environments (AWS, GCP, or Azure).\n\nClient Collaboration: Work closely with cross-functional teams, architects, product managers, and client stakeholders to translate complex business needs into clean technical implementations.\n\nBest Practices & Quality: Enforce API design standards (OpenAPI/Swagger), automated CI/CD pipelines, containerization (Docker, Kubernetes), and security protocols (OAuth2, JWT).\n\nRequired Skills & Experience\nProfessional Experience: 4+ years of professional software development experience in full stack and API-centric application development.\n\nDual-Stack Fluency: Deep, hands-on programming expertise in both Python and Java enterprise frameworks.\n\nClaude Code / Agentic AI Workflow: Proven familiarity and hands-on experience using Claude Code (Anthropic's terminal-based coding assistant) to plan, write, refactor, and review codebase changes.\n\nAPI Architecture: In-depth knowledge of API design paradigms (REST, GraphQL, or gRPC), microservices patterns, error handling, rate limiting, and API security.\n\nDatabase & Cloud Skills: Solid proficiency with SQL/NoSQL databases and core cloud services (AWS preferred).\n\nDevOps & Tooling: Strong familiarity with Git, Linux CLI environments, Docker, and standard CI/CD pipelines.\n\nPreferred Qualifications\nExperience in management/technology consulting or working with enterprise clients.\n\nWorking knowledge of modern frontend frameworks (e.g., React, TypeScript).\n\nExperience with distributed streaming systems (e.g., Kafka) or orchestration frameworks.\n\nFamiliarity with building LLM-integrated applications (e.g., RAG pipelines, function-calling architectures).\n\nInfinitive is required by law in some jurisdictions to include a reasonable estimate of the compensation range for this role. The determination of this range includes various factors not limited to skill set, level, experience, relevant training, and licensure and certifications. Compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current range for this role in the U.S. is $90,000 - $154,00.00.\nInfinitive is an Equal Opportunity Employer. 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