

Senior API Engineer Contractor
β - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior API Engineer Contractor, with a contract length of "unknown," offering a pay rate of "unknown." Key skills include Java, Spring Boot, RESTful API design, microservices, and DevOps tools. A degree in Computer Science and 7+ years of experience are required.
π - Country
United States
π± - Currency
$ USD
-
π° - Day rate
496
-
ποΈ - Date discovered
September 18, 2025
π - Project duration
Unknown
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ποΈ - Location type
Unknown
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π - Contract type
Unknown
-
π - Security clearance
Unknown
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π - Location detailed
United States
-
π§ - Skills detailed
#Documentation #Kubernetes #NoSQL #Monitoring #React #Databases #PostgreSQL #Leadership #Jenkins #Code Reviews #Scala #Microservices #GCP (Google Cloud Platform) #Strategy #DevOps #Deployment #Compliance #Java #AWS (Amazon Web Services) #Spring Boot #SQL (Structured Query Language) #Azure #Security #Docker #Cloud #API (Application Programming Interface) #MongoDB #Swagger #Angular #Kafka (Apache Kafka) #MySQL #Computer Science
Role description
Overview
We are looking for a Senior API Engineer with deep expertise in Java and the Spring Boot framework to architect, develop, and optimize enterprise-grade RESTful APIs. This role is ideal for professionals who thrive on solving complex integration challenges, driving technical excellence, and mentoring team members. You will play a pivotal role in shaping our API strategy, ensuring scalability, security, and performance across our backend systems.
Key Responsibilities
β’ Architect and design robust RESTful APIs using Java and Spring Boot, focusing on scalability, reliability, and maintainability.
β’ Lead technical discussions and decisions related to API development, integration patterns, and microservices architecture.
β’ Mentor and guide junior engineers, fostering best practices in code quality, testing, and API design.
β’ Establish and enforce standards for API documentation, versioning, security (OAuth2, JWT), and error handling.
β’ Collaborate with product owners, solution architects, and cross-functional teams to translate business requirements into technical solutions.
β’ Drive performance optimization and monitoring for API endpoints, using profiling and analytics tools.
β’ Oversee integration with databases (SQL/NoSQL), third-party services, and internal platforms.
β’ Champion DevOps practices such as CI/CD, containerization (Docker/Kubernetes), and cloud deployment (AWS/Azure/GCP).
β’ Stay abreast of emerging technologies and industry trends, recommending improvements and innovations.
β’ Participate in code reviews and technical audits, ensuring adherence to architectural guidelines and security standards.
Required Skills and Qualifications
β’ Bachelorβs or Masterβs degree in Computer Science, Engineering, or related field.
β’ 7+ years of professional experience in Java development, with a strong focus on Spring Boot API engineering.
β’ Proven track record in architecting and delivering large-scale, high-availability API solutions.
β’ Expertise in RESTful API design, including documentation (Swagger/OpenAPI), versioning, and error handling.
β’ Strong knowledge of security protocols (OAuth2, JWT, SSL/TLS) and compliance requirements.
β’ Experience with microservices architecture and distributed systems.
β’ Advanced proficiency with databases (e.g., PostgreSQL, MySQL, MongoDB) and ORM frameworks.
β’ Hands-on experience with DevOps tools (Jenkins, Docker, Kubernetes) and cloud platforms.
β’ Excellent problem-solving, communication, and leadership skills.
β’ Ability to work independently and drive technical initiatives.
Preferred Qualifications
β’ Experience with event-driven architectures (Kafka, RabbitMQ).
β’ Familiarity with front-end frameworks (React, Angular) for full-stack collaboration.
β’ Exposure to API gateway solutions (Apigee, AWS API Gateway).
β’ Prior experience in healthcare is a plus.
Overview
We are looking for a Senior API Engineer with deep expertise in Java and the Spring Boot framework to architect, develop, and optimize enterprise-grade RESTful APIs. This role is ideal for professionals who thrive on solving complex integration challenges, driving technical excellence, and mentoring team members. You will play a pivotal role in shaping our API strategy, ensuring scalability, security, and performance across our backend systems.
Key Responsibilities
β’ Architect and design robust RESTful APIs using Java and Spring Boot, focusing on scalability, reliability, and maintainability.
β’ Lead technical discussions and decisions related to API development, integration patterns, and microservices architecture.
β’ Mentor and guide junior engineers, fostering best practices in code quality, testing, and API design.
β’ Establish and enforce standards for API documentation, versioning, security (OAuth2, JWT), and error handling.
β’ Collaborate with product owners, solution architects, and cross-functional teams to translate business requirements into technical solutions.
β’ Drive performance optimization and monitoring for API endpoints, using profiling and analytics tools.
β’ Oversee integration with databases (SQL/NoSQL), third-party services, and internal platforms.
β’ Champion DevOps practices such as CI/CD, containerization (Docker/Kubernetes), and cloud deployment (AWS/Azure/GCP).
β’ Stay abreast of emerging technologies and industry trends, recommending improvements and innovations.
β’ Participate in code reviews and technical audits, ensuring adherence to architectural guidelines and security standards.
Required Skills and Qualifications
β’ Bachelorβs or Masterβs degree in Computer Science, Engineering, or related field.
β’ 7+ years of professional experience in Java development, with a strong focus on Spring Boot API engineering.
β’ Proven track record in architecting and delivering large-scale, high-availability API solutions.
β’ Expertise in RESTful API design, including documentation (Swagger/OpenAPI), versioning, and error handling.
β’ Strong knowledge of security protocols (OAuth2, JWT, SSL/TLS) and compliance requirements.
β’ Experience with microservices architecture and distributed systems.
β’ Advanced proficiency with databases (e.g., PostgreSQL, MySQL, MongoDB) and ORM frameworks.
β’ Hands-on experience with DevOps tools (Jenkins, Docker, Kubernetes) and cloud platforms.
β’ Excellent problem-solving, communication, and leadership skills.
β’ Ability to work independently and drive technical initiatives.
Preferred Qualifications
β’ Experience with event-driven architectures (Kafka, RabbitMQ).
β’ Familiarity with front-end frameworks (React, Angular) for full-stack collaboration.
β’ Exposure to API gateway solutions (Apigee, AWS API Gateway).
β’ Prior experience in healthcare is a plus.