Lead Developer (Java, Spring Boot, Microservices & Industrial Integration)

Job Requirements At Quest Global, it’s not just what we do but how and why we do it that makes us different. With over 25 years as an engineering services provider, we believe in the power of doing things differently to make the impossible possible. Our people are driven by the desire to make the world a better place—to make a positive difference that contributes to a brighter future. We bring together technologies and industries, alongside the contributions of diverse individuals who are empowered by an intentional workplace culture, to solve problems better and faster. ## Role purpose The Lead Developer will provide hands-on technical leadership for implementation of the Next Generation Platform. The role turns architecture and product requirements into production-quality software, leads a development squad, and is accountable for code quality, integration, and delivery from design through pilot and rollout. ## Key responsibilities - Lead the design and implementation of modular services and domain capabilities using Java and Spring Boot. - Drive migration from legacy Java technologies, API modernization, cleanup, stabilization, and incremental extraction of services from the existing platform. - Translate domain models and architecture decisions into maintainable code, interfaces, schemas, and deployment-ready components. - Build and integrate capabilities across warehouse execution, robotic applications, controls, Edge services, HMI, and data acquisition as assigned. - Develop reliable interfaces to enterprise systems, PLC/control layers, robot controllers, Edge applications, and operational data consumers. - Set coding standards and lead code reviews, pairing, refactoring, automated testing, and technical documentation. - Create reference implementations and reusable components that improve consistency across squads. - Work with QA to define testability, acceptance criteria, component/integration tests, simulators, and defect-prevention practices. - Work with DevSecOps to embed build, scanning, packaging, deployment, observability, and operational controls into the delivery workflow. - Troubleshoot complex performance, concurrency, integration, and production issues across software and equipment boundaries. - Break roadmap features into feasible technical increments, provide estimates, surface dependencies, and protect delivery quality. - Mentor developers and support the growth of technical ownership within the team. ## Required experience and capabilities - Minimum 8 years of software-development experience, including at least 2 years leading technical delivery or mentoring a development team. - Advanced Java and Spring Boot skills, including API design, dependency management, persistence, concurrency, and automated testing. - Experience with modular monoliths and/or microservices, domain-driven design, REST and asynchronous integration patterns. - Strong knowledge of relational databases, messaging, Git-based workflows, CI/CD, containers, logs, metrics, and distributed troubleshooting. - Proven ability to modernize legacy code safely while continuing to deliver features. - Understanding of secure coding, authentication/authorization, secrets handling, dependency risk, and common application vulnerabilities. - Experience integrating with PLCs, robots, material-flow systems, Edge devices, or industrial protocols is highly desirable. - Strong ownership, communication, estimation, review, and mentoring skills. ## Core technical skills - Advanced Java, Spring Boot, REST APIs, dependency management, and concurrency - Microservices, modular monoliths, domain-driven design, and event-driven integration - SQL databases, messaging platforms, API versioning, and data migration - Unit, component, integration, contract, and automated regression testing - Git, CI/CD, containers, logs, metrics, tracing, and distributed troubleshooting - Secure coding, authentication/authorization, secrets management, and dependency security - PLC, robot-controller, Edge-device, HMI, or industrial-system integration concepts We are known for our extraordinary people who make the impossible possible every day. Questians are driven by hunger, humility, and aspiration. We believe that our company culture is the key to our ability to make a true difference in every industry we reach. Our teams regularly invest time and dedicated effort into internal culture work, ensuring that all voices are heard. We wholeheartedly believe in the diversity of thought that comes with fostering a culture rooted in respect, where everyone belongs, is valued, and feels inspired to share their ideas. We know embracing our unique differences makes us better, and that solving the worlds hardest engineering problems requires diverse ideas, perspectives, and backgrounds. We shine the brightest when we tap into the many dimensions that thrive across over 21,000 difference-makers in our workplace.