Tech Lead (Java + React)

Limeup is an international company specializing in developing tailor-made digital solutions for clients in fintech, healthcare, proptech, automation and other technology-driven industries. We deliver end-to-end products from initial concept and design to implementation and ongoing support.

We are looking for an experienced Tech Lead (Java + React) who will play a key role at the intersection of technology and business: participating in presale processes, developing solution designs for clients, and leading the technical implementation of projects.

Key Responsibilities

• Participate in presale and discovery phases: analyze business requirements, estimate development efforts, and prepare technical proposals and architectural concepts.
• Develop solution designs and Proof of Concept (PoC) for potential clients.
• Define project architecture and technology stack (Java backend, React frontend, API integrations, etc.).
• Lead developers, provide mentoring, and conduct code reviews.
• Collaborate with clients, product managers, and designers to align on technical solutions.
• Ensure implementation quality and technical compliance of the project.

Requirements

• 5+ years of commercial experience in Java development (Spring Boot, Hibernate, REST API).
• Strong proficiency with React.js and modern frontend stack (TypeScript, Redux, Webpack).
• Deep understanding of distributed systems and microservice architecture.
• Experience participating in presale and solution design activities.
• Ability to explain and defend technical decisions to clients.
• English level — Upper-Intermediate or higher.

Nice to Have

• Knowledge and experience with AI / ML technologies (integration of external AI services, understanding of model architectures and LLM tools).
• Experience with cloud technologies (AWS, Azure, GCP).
• DevOps skills (Docker, CI/CD, Kubernetes).
• Experience managing a distributed development team.