Build and maintain Java backend services, REST APIs, and full-stack web application features. Develop frontend functionality with modern JavaScript frameworks, use Python for supporting work, and leverage AI coding tools such as Claude Code. Write tests, debug issues, support deployment and maintenance, and collaborate on design decisions, code reviews, and application quality improvements.
The Role
Cogniify is hiring a Full Stack Java Engineer to build and improve web applications. You will work on Java-based backend services and user-facing features, with Python used where it fits the work. We are looking for someone who can deliver features end to end and use AI development tools such as Claude Code to support coding, testing, and debugging.
What You’ll Do
- Build and maintain Java backend services, APIs, and application features.
- Develop frontend features using a modern JavaScript framework and integrate them with backend APIs.
- Work with Python for scripts, integrations, or supporting services when needed.
- Use Claude Code or similar AI coding tools to help with development, while reviewing and testing the output before release.
- Write tests, troubleshoot issues, and support the deployment and maintenance of applications.
- Work with the team on design decisions, code reviews, and practical improvements to application quality.
What We’re Looking For
- 3 to 6 years of professional software development experience.
- Hands-on Java development experience, including backend services and REST APIs.
- Full-stack experience building both backend and frontend application features.
- Working knowledge of Python.
- Familiarity with Claude Code or another AI coding assistant in a software development workflow.
- Exposure to building or running applications on a cloud platform such as AWS, Azure, or Google Cloud.
- Ability to test and debug your work and communicate clearly with other engineers.
Preferred Qualifications
- Experience with Spring Boot and a frontend framework such as React, Angular, or Vue.
- Familiarity with SQL databases, Git, and CI/CD practices.
Perks And Benefits Of Working With Us
- Unlimited PTO.
- Please ask us about our very generous parental leave, much above industry standards!.
- Entrepreneurial culture where pushing limits and taking risks is everyday business.
- Open communication with management and company leadership.
- Small, dynamic teams = massive impact.
- Medical, Dental and Vision coverage for employees.
- Access to Disability & Life insurance.
- Mental health and wellbeing support
- Annual bonus program
- Employer Stock Purchase Program (ESPP)
- Yearly Team building experiences
- Mentorship and sponsorship opportunities
- Manager resources and support
We are an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or any other protected characteristic.
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Boston is a powerhouse for technology innovation thanks to world-class research universities like MIT and Harvard and a robust pipeline of venture capital investment. Host to the first telephone call and one of the first general-purpose computers ever put into use, Boston is now a hub for biotechnology, robotics and artificial intelligence — though it’s also home to several B2B software giants. So it’s no surprise that the city consistently ranks among the greatest startup ecosystems in the world.
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