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Senior API Developer

Fynbosys IncDenver, CO🇺🇸United StatesPosted Oct 16, 2026

Quick Overview

Seniority
Mid Senior
Work mode
On Site
Location
Denver, CO, United States
Posted
Yesterday
DockerMicroservicesSpringSpring BootAPI GatewayAWSOAuthSAMLScrumTDDAgileJavaKanbanKubernetesPython

Job Description

Hi

Role :Senior API Developer

Location:  Denver, CO
Duration:  12 Months
ONSITE POSITION
Role Definition
We are seeking a Senior API Developer who is passionate about redefining the traditional software development lifecycle through AI-driven engineering. In this role, you will design, build, and optimize high-performance APIs while actively leveraging advanced AI coding tools to accelerate production. You will be a core contributor to our backend architecture, utilizing tools like Claude Code to write, refactor, and test code, while integrating foundation models via AWS Bedrock. The ideal candidate treats AI not just as a chatbot, but as an advanced pair-programmer and architecture collaborator.
Job Duties and Responsibilities
.       Design and develop scalable API specifications using OpenAPI/YAML with enhanced data security
.       Ability to guide and use AI to generate Frontend UI (NextJS) for the APIs wherever applicable
.       Create CI/CD pipelines for API build, deployment, and integration
.       Manage the full API lifecycle, from development to deployment
.       Collaborate with application teams to understand API requirements and needs
.       Ensure up-to-date API documentation and maintain design quality with proper security measures
.       Troubleshoot, resolve issues, and perform root cause analysis to prevent future production issues
Skills, Experience and Requirements
Education and Experience:
Bachelors Degree in Computer Science or related field
7+ years of experience in development, and implementation of
7+ enterprise-wide
solutions based on Java Technologies (Java, J2EE, Web Services, Spring, Spring Boot and Python) Hands on experience with design, development and implementation of Spring Boot, Spring Cloud, Spring Integration based Microservices
Skills and Qualifications:
Knowledge of test-driven development (TDD) and experience with version control tools like GitLab, along with CI/CD tools Proficient with API Gateway & Management tools such as Apigee Hands-on experience with Docker, Kubernetes,  and AWS cloud products Strong analytical, communication, and presentation skills for interacting with global technical teams Familiar with Agile methodologies (Kanban or SCRUM) and deploying microservices (spring-boot) on Docker/Kubernetes Understanding of security protocols (OAuth, SAML) and experience with governance, event-driven architectures, and caching strategies

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