Senior Full-Stack Developer – Java, React

Job not on LinkedIn

🕒 August 21

🇵🇹 Portugal – Remote

⏰ Full Time

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 10%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Newfire Global Partners

WebsiteLinkedInAll Job Openings

501 - 1000 employees

Founded 2016

💼 Consulting

🏥 Healthcare

📣 Marketing

Consulting • Healthcare • Marketing

Newfire Global Partners is an American IT services and advisory firm (founded in 2016 in Boston) that provides talent augmentation, software engineering, data & analytics, and AI/ML advisory to enterprise and investor clients. The company offers multidisciplinary engineering, product, and marketing teams, technical due diligence for VC/PE, data platform optimization, and an internal ML tool (Novel Heat) to improve code quality and Scrum velocity. Newfire operates across the Americas, Europe, and APAC with a 24x5 follow-the-sun delivery model and focuses on sectors such as digital healthcare, fintech, cybersecurity, and education technology.

📋 Description

• Ship customer-facing features behind feature flags in small, reviewed pull requests • Improve existing code by decomposing oversized services, adding tests, and migrating backend code toward Java 21 and Spring Boot 3.x • Build component and integration tests as part of everyday feature work • Make repositories AI-ready through context files, custom commands, and safe agent-work patterns • Collaborate across pod boundaries in a mostly shared codebase • Participate in code reviews, pod ceremonies, and estimation • Collaborate with the Quality Assistance team to build end-to-end tests • Investigate and fix production issues within the pod’s area • Document learnings and decisions • Mentor mid-level engineers and develop toward pod-lead responsibilities • Participate in hiring processes through interview panels • Work on a luxury retail client’s e-commerce platform, online storefronts, and ERP integrations • Help modernize the platform and accelerate software delivery

🎯 Requirements

• 6+ years of commercial software engineering experience, genuinely full-stack • Strong Java and Spring Boot, including JPA/Hibernate • Experience with database migrations (Flyway or similar) • Relational data modeling • Strong React and TypeScript with modern Next.js, including App Router, Server Components, and current data-fetching patterns • Solid PostgreSQL • Experience modernizing or maintaining a large existing production codebase • Full ownership of delivered work, including unit, integration, and E2E testing • Trunk-based development, small frequent PRs, feature flags, and respect for module boundaries • Fluency with AI-assisted, agentic development, including Claude Code, context engineering, AI code review, and test generation • Good security hygiene, including secure input handling and reviewed PRs and CI • Solid REST API design and third-party service integration experience • Familiarity with Agile/Scrum practices • Proactive communication and documentation • Excellent spoken and written English • Significant US Eastern Time overlap • Legal work authorization in the country of residence

🏖️ Benefits

• Fully remote work • AI-assisted development tools, including Claude Code and CodeRabbit