Lead Java Developer

Role Title: Java Full-Stack Lead Developer Location: Sheffield, UK Work mode: Hybrid – 3 days weekly from office Skills: Java Full-Stack, Java (8/11/17+), Spring Boot / Spring Cloud, RESTful APIs, microservices, React / Vue / Angular and ORM frameworks (Hibernate, JPA) We at Coforge are looking for Java Full-Stack Lead Developer in Sheffield, UK The Opportunity: (Brief Overview of the Role) We are seeking a highly experienced Java Full-Stack Lead Developer with strong system architecture expertise to lead the design and delivery of scalable, distributed systems.This is a hands-on leadership role where you will define architecture, guide a globally distributed engineering team, and ensure high standards in both backend and frontend development. Key Responsibilities Lead the architecture design of complex, scalable and high-availability systems Make critical decisions on system design, tech stack, and trade-offs Drive end-to-end development across backend and frontend (hands-on coding required) Lead and coordinate a globally distributed team across different time zones Establish and enforce engineering best practices, coding standards, and design principles Conduct design reviews, code reviews, and architecture governance Optimize system performance, scalability, and reliability Troubleshoot and resolve complex production and distributed system issues Collaborate with product, design, and business stakeholders globally What you will need to succeed in the role: (Minimum Qualification and Skills Required) Architecture & System Design (Must-Have) Proven experience designing large-scale distributed systems Microservices architecture Event-driven architecture High concurrency and scalability patterns Strong knowledge of: System trade-offs (consistency vs availability, latency vs throughput) API design and service boundaries Fault tolerance and resilience design Experience with system decomposition and domain modelling Backend Expert-level proficiency in Java (8/11/17+) Strong experience with Spring Boot / Spring Cloud Deep understanding of RESTful APIs and microservices Experience with ORM frameworks (Hibernate, JPA) Frontend Strong hands-on experience with at least one: React / Vue / Angular Solid understanding of frontend architecture and state management Ability to contribute to frontend system design (not just coding) Data & Infrastructure Strong experience with relational databases (Oracle / SQL Server / PostgreSQL) Experience with: Redis or distributed caching, Message queues (Kafka / RabbitMQ) Familiar with: Docker, Kubernetes, CI/CD and automated deployment pipelines What additional skills will be good to have? (List out good to have skills and certifications) Excellent project management skills with a track record of successfully leading large-scale initiatives preferred Nice to Have (Strong Differentiators) Experience with cloud-native architecture (AWS / Azure / GCP) Experience designing multi-region or global systems Exposure to AI systems (LLM, RAG, vector databases) Experience with observability (metrics, tracing, logging systems)