

Senior API Developer
β - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior API Developer on a 6+ month contract, 100% remote. Requires 5+ years in API development, proficiency in Java 17+, Spring Boot 3+, microservices architecture, and expertise in CI/CD pipelines and API security.
π - Country
United States
π± - Currency
$ USD
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π° - Day rate
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ποΈ - Date discovered
August 8, 2025
π - Project duration
More than 6 months
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ποΈ - Location type
Remote
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π - Contract type
W2 Contractor
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π - Security clearance
Unknown
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π - Location detailed
United States
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π§ - Skills detailed
#Redis #API (Application Programming Interface) #PHP #BigQuery #Java #Spring Boot #Security #Scala #JUnit #Databases #Cloud #GCP (Google Cloud Platform) #Swagger #POSTMAN #Azure #PostgreSQL #JSON (JavaScript Object Notation) #JMeter #MongoDB #Deployment #Documentation #NoSQL #SQS (Simple Queue Service) #AWS (Amazon Web Services) #Microservices
Role description
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Job Title: Senior API Developer (Only W2)
Job Type: Contract (6+ months)
Job Location: 100% Remote
Required Experience:
β’ 5+ years of hands-on experience in API development
β’ Proficient in Java 17+, Spring Boot 3+, and RESTful API design
β’ Deep understanding of Microservices architecture, distributed systems, and inter-service communication
β’ Experience with caching solutions like Redis
β’ Strong expertise in CI/CD pipelines for automated build, test, and deployment
β’ Skilled in relational databases (e.g., PostgreSQL) and NoSQL databases (e.g., MongoDB, Cassandra)
β’ Proficiency in API orchestration and service-oriented architecture (SOA)
β’ Strong understanding of API security, including OAuth2 and JWT
Technical Skills:
β’ Java 17+, Spring Boot 3+
β’ J2EE, JUnit, JSON, PHP
β’ Apache JMeter, Tomcat
β’ TortoiseSVN, Make file
β’ RESTful API design & development
β’ Swagger, Postman for API documentation
β’ Serverless computing, microservices architecture, infrastructure-as-code
β’ Google Cloud Platform (GCP), AWS, Azure
Responsibilities:
β’ Design, develop, and operate scalable, cloud-native applications across the full engineering stack
β’ Write clean, maintainable, well-tested code following modern development practices
β’ Implement and support microservices with high reliability and performance
β’ Manage deployment pipelines and cloud infrastructure
β’ Leverage advanced cloud services (e.g., BigQuery, Bigtable, Pub/Sub, SQS, EventBridge, GKE/EKS) for application delivery and support