Senior Consultant, Full Stack API Developer

Infinitive Inc; McLean (VA); Hybrid; USD 90,000 - 154,000; Full time

Benefits offered by this job

Hybrid work model

Job summary

Infinitive Inc. is seeking a skilled Full Stack API Developer to architect, build, and optimize enterprise-grade APIs and microservices. You will work with Python and Java, integrating AI-assisted workflows using Claude Code to accelerate development.

The role combines backend API design with frontend integration, cloud data platforms, and DevOps practices. This hybrid position offers collaboration with cross-functional teams and opportunities to influence architecture across client projects.

Qualifications

• 4+ years of professional software development experience in full stack and API-centric applications.
• Hands-on programming in Python and Java enterprise frameworks.
• Claude Code experience for AI-assisted development and code reviews.
• API design knowledge (REST, GraphQL, gRPC) and microservices patterns.
• Proficiency with SQL/NoSQL databases and core cloud services (AWS).
• Familiarity with Git, Docker, Kubernetes and CI/CD pipelines.

Responsibilities

• Design, build, and maintain scalable RESTful and event-driven APIs.
• Connect backend endpoints with frontend interfaces and client-facing apps.
• Utilize Claude Code to accelerate development, testing, refactoring, and documentation.
• Interface with relational and NoSQL databases and messaging systems (Kafka, RabbitMQ).
• Collaborate with cross-functional teams to translate business needs into implementations.
• Enforce API design standards and security practices.

Skills

Python

Java

Claude Code

API design

Database & Cloud

DevOps & tooling

Tools

Docker

Kubernetes

Spring Boot

Job description

**This is a hybrid role**

About Infinitive

Infinitive 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.

Infinitive 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.

Position Overview

We are looking for a skilledFull 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.

You should possess strong, production-tested experience in both Pythonand 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.

Key Responsibilities

• API & 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).

• Full Stack Integration: Connect robust backend endpoints with responsive frontend interfaces and client-facing web applications.

• AI-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.

• Data & 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).

• Client Collaboration: Work closely with cross-functional teams, architects, product managers, and client stakeholders to translate complex business needs into clean technical implementations.

• Best Practices & Quality: Enforce API design standards (OpenAPI/Swagger), automated CI/CD pipelines, containerization (Docker, Kubernetes), and security protocols (OAuth2, JWT).

Required Skills & Experience

• Professional Experience: 4+ years of professional software development experience in full stack and API-centric application development.

• Dual-Stack Fluency: Deep, hands-on programming expertise in both Python and Java enterprise frameworks.

• Claude 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.

• API Architecture: In-depth knowledge of API design paradigms (REST, GraphQL, or gRPC), microservices patterns, error handling, rate limiting, and API security.

• Database & Cloud Skills: Solid proficiency with SQL/NoSQL databases and core cloud services (AWS preferred).

• DevOps & Tooling: Strong familiarity with Git, Linux CLI environments, Docker, and standard CI/CD pipelines.

Preferred Qualifications

• Experience in management/technology consulting or working with enterprise clients.

• Working knowledge of modern frontend frameworks (e.g., React, TypeScript).

• Experience with distributed streaming systems (e.g., Kafka) or orchestration frameworks.

• Familiarity with building LLM-integrated applications (e.g., RAG pipelines, function-calling architectures).

Infinitive 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.

Infinitive is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.