Senior Java Fullstack Developer

Key Responsibilities

Own initiatives end to end

• Take an initiative from an open problem to production: write the design, divide the work so several engineers can contribute, ship it, and support it after release.
• Partner with Product and Design on scope and timing. Say when a feature costs too much, and propose a cheaper path that still meets the outcome.
• Think through risks before the build starts. Escalate early when you find a surprise or the scope changes.

Modernize legacy workflows onto React

• Replace legacy Oracle ADF/JSF screens with React and TypeScript screens built on Holocron, Tango's shared design system.
• Design and build the Java APIs (Spring Boot) those screens need, so the same APIs can also serve integrations and AI agents later.
• Make pragmatic calls on where to rewrite and where to wrap. Accept a less-than-perfect solution when there is a good reason.

Keep the production estate healthy

• Drive improvements to code health, test coverage, and long-term maintainability in the team's codebases.
• Take part in on-call and incident response. Lead or contribute to postmortems, and turn the learnings into better patterns.
• Fix security findings in the code you own. Ship through the paved-road CI/CD pipeline.

Raise the team's craft

• Mentor and ramp up newer engineers through pairing, design reviews, and code reviews.
• Weigh in on technical decisions that affect the team. Take a position, and stay open to better ideas.
• Help the team improve how it works through retros.

Use AI as a force multiplier

• Build prompts, AI workflows, or lightweight agents that speed up the team's work, and teach others to use them well.
• Check AI-generated code with the same rigor as human code. Guard against over-reliance on it.

About You

• You have owned the design, build, and rollout of a large feature or initiative in a production B2B application, including the coordination, documentation, and support that came with it. (Typically 6+ years of professional software engineering.)
• You are fluent in Java on the server side, including Java EE and/or Spring Boot, and comfortable with relational databases. Oracle SQL and PL/SQL experience is a clear plus.
• You have shipped production React (ideally with TypeScript) and can build a screen against an API you designed.
• You have modernized or refactored a legacy system without stopping delivery, and you can explain the tradeoffs you made.
• You have mentored other engineers and made them measurably better.
• You use AI coding and research tools every day, you know their failure modes, and you can integrate an LLM API into a product when the problem fits.

Nice to Have

• Experience with Oracle ADF or JSF.
• Experience with a shared component library or design system.
• AWS experience, especially infrastructure-as-code and CI/CD pipelines.
• Domain experience in real estate, facilities, maintenance, or workplace software (IWMS, CAFM, CMMS).