Backend Java Engineer: Build Scalable APIs & Services

Wellnow Health Llc; Springfield (MA); On-site; USD 70,000 - 100,000; Full time

Job summary

Wellnow Health Llc in Massachusetts is seeking a Software Engineer to drive backend development and implement scalable Java services. You will work on features, APIs, and performance testing within an agile team to deliver robust software solutions.

The role emphasizes server-side Java, REST/SOAP APIs, and modern database integrations. Collaboration, code reviews, and documentation are key daily activities in a fast-paced health tech environment.

Qualifications

• Bachelor’s degree in Software Engineering, Information Technology or related field.
• 1–3 years of experience in software engineering.
• Experience developing server-side web applications in Java.
• Experience developing Java Web Services with public API (REST, SOAP).
• Experience with relational (MySQL, PostgreSQL) and NoSQL databases (MongoDB).
• Proficient in object-oriented development and design patterns.

Responsibilities

• Develop new capabilities and re-architect parts of an existing system.
• Participate in test-driven, iterative development, prototyping, and reviews with a team of developers.
• Design and code backend in Java in a clean and efficient way.
• Implement scalable and robust services.
• Develop external and internal APIs.
• Develop and run unit and performance tests to ensure scalability and reliability.
• Review and debug code.
• Produce documentation and diagrams to explain solutions.
• Define system specifications, standards, and programming to install solutions.

Skills

Java

Object-oriented development

REST APIs

SOAP

Communication skills

Adaptability

Education

Bachelor’s degree in Software Engineering or related field

Tools

MySQL

PostgreSQL

MongoDB

Java frameworks

Job description

Wellnow Health Llc in Massachusetts is seeking a Software Engineer to drive backend development and implement scalable Java services. You will work on features, APIs, and performance testing within an agile team to deliver robust software solutions.

The role emphasizes server-side Java, REST/SOAP APIs, and modern database integrations. Collaboration, code reviews, and documentation are key daily activities in a fast-paced health tech environment.