Full Stack Developer (Remote US) - Flexion
4 days ago⚠️ Before applying, please carefully review all the job requirements
- Location:
- Madison, Wisconsin, United States (Remote)
- Work Arrangement:
- Remote
- Experience:
- 5+ Years
- Job Type:
- Full Time
- Company:
- Flexion
- Salary:
- $130,000 – $150,000 per year
- Posted:
- 2026-09-29
Job Overview
- Flexion is seeking a Full Stack Java Developer for a remote, full-time position focused on building and maintaining large-scale, enterprise applications. The role directly supports critical federal acquisition and assistance programs, ensuring their continuous, secure, and compliant operational performance. Working as part of a multidisciplinary Agile team, the developer will build end-to-end features spanning user interfaces, backend APIs, server infrastructure, and database layers using Java, JBoss/WildFly, and AWS.
- This position strongly emphasizes collaborative engineering practices, including pair programming, mob programming (ensemble programming), swarming, and Test-Driven Development (TDD).
Key Responsibilities
- ★ Build, maintain, and enhance full-stack Java applications deployed on JBoss/WildFly servers within Amazon Web Services (AWS) environments.
- ★ Develop and integrate all layers of the application stack, including frontend user interfaces, backend logic, APIs, and relational databases.
- ★ Collaborate daily within a multidisciplinary Agile team alongside Software Engineers, DevOps Engineers, UX Researchers, UX Designers, and Product Managers.
- ★ Engage regularly in real-time collaborative development workflows, such as pair programming, mob programming, and swarming with teammates.
- ★ Participate across the full software development lifecycle, including technical design, coding, testing, debugging, cloud deployment, and system documentation.
- ★ Configure, deploy, and maintain application infrastructure on AWS EC2 and JBoss application servers.
- ★ Diagnose and resolve complex technical problems spanning frontend interfaces, server processes, data pipelines, and cloud environments.
Required Skills and Qualifications
- ★ Bachelor’s degree in a technical field or equivalent practical professional experience.
- ★ 5 or more years of professional software development experience in enterprise-level environments.
- ★ At least 5 years of hands-on experience building end-to-end full-stack applications using Java across frontend and backend layers.
- ★ Proven experience deploying and configuring Java applications on JBoss or WildFly application servers.
- ★ Direct hands-on experience working within AWS EC2 to deploy and maintain cloud-hosted software.
- ★ Practical background using Jakarta Server Pages (formerly JavaServer Pages / JSP) for web interface development.
- ★ Demonstrated experience working with SQL databases.
- ★ Practical experience developing and integrating SOAP web services/APIs.
- ★ Strong commitment to Test-Driven Development (TDD) principles and Agile methodologies.
- ★ Ability to write high-quality code efficiently and quickly master new tools and technologies.
Company Culture and Engineering Principles
- ★ Autonomous and transparent team environment with low bureaucracy and shared leadership responsibility across projects.
- ★ Active utilization of AI-assisted development platforms (such as OpenCode, Claude Code, Codex, and GitHub Copilot) to accelerate delivery and maintain high code quality.
- ★ Highly collaborative structure with approximately 50% of work time spent pairing or working in small online groups.
- ★ Focus on delivering incremental, demonstrable software iterations every one to two weeks with a quality-first mindset.
- ★ Open feedback culture focused on root-cause problem solving and continuous personal and team improvement.
What the Company Offers
- ★ Competitive annual salary between $130,000 and $150,000.
- ★ Comprehensive health, dental, and vision insurance coverage.
- ★ Life insurance and disability coverage.
- ★ Generous accrued paid time off (PTO) program.
- ★ Flexible Spending Accounts (FSA).
- ★ 401(k) retirement savings plan.
- ★ Employee referral bonus scheme.
- ★ People-first workplace culture supporting work-life balance, career advancement, and well-being.
Prepare for Your Interview
- These suggested questions can help you prepare for an interview by focusing on the skills, responsibilities, and technical areas relevant to this role
Suggested Interview Questions
- Q: How do you structure and maintain full-stack Java applications deployed on JBoss or WildFly servers?
- Q: Can you describe your hands-on experience configuring and supporting Java web applications within AWS EC2 environments?
- Q: How do you apply Test-Driven Development (TDD) practices in your daily software engineering workflow?
- Q: What experience do you have developing web interfaces using Jakarta Server Pages (JSP)?
- Q: How do you approach building and consuming SOAP APIs within enterprise architectures?
- Q: How do you write, optimize, and troubleshoot SQL queries when interacting with backend relational databases?
- Q: Can you share your experience working with real-time collaborative coding practices such as pair programming, mobbing, or swarming?
- Q: How do you leverage AI-powered tools like GitHub Copilot or Claude Code to improve coding efficiency and software quality?
- Q: How do you adapt when requirements or priorities change abruptly in an Agile development cycle?
- Q: How do you give and receive constructive technical feedback within a cross-functional engineering team?
Application Tips
- Applicants may want to highlight relevant experience with full-stack Java engineering, particularly emphasizing applications deployed on JBoss/WildFly and hosted on AWS EC2. On your CV, clearly outline your experience with Test-Driven Development (TDD), Jakarta Server Pages (JSP), SOAP web services, and SQL database management. Demonstrating past participation in Agile setups involving pair programming, mob programming, or swarming will help highlight your alignment with the team's working style.
interested candidates fill the job application form: Apply Here
