Full Stack Software Engineer (Java / React)

Full Stack Software Engineer (Java / React) Working hours: Full overlap with MT zone Job Summary We are looking for Mid-Level Full Stack Software Engineers to join our Ascend engineering teams . In this role, you will contribute to both front-end and back-end development across our Ascend platform, working within a Java/Spring Boot backend and React-based frontend architecture . Engineers in this role will work on features within our Ascend monolith and Mosaic solutions , collaborating closely with product managers, designers, and other engineers to build scalable and reliable web applications. This position is ideal for engineers with 3–9 years of professional experience who are comfortable working across the full stack and enjoy building customer-facing applications and backend services. Key Responsibilities Design, develop, and maintain full-stack features across Ascend applications Build and enhance backend services using Java and Spring Boot Develop modern front-end interfaces using React Work with PostgreSQL databases for data storage and retrieval Integrate with event-driven systems using Kafka Contribute to both Ascend monolith and Mosaic service architecture Write clean, maintainable, and testable code Collaborate with cross-functional teams including product, QA, and other engineers Participate in code reviews and technical discussions Help troubleshoot production issues and improve system reliability Required Qualifications 3–9 years of professional software engineering experience Strong experience with Java and Spring Boot Experience building web applications using React Solid understanding of REST APIs and backend service design Experience working with PostgreSQL or other relational databases Familiarity with Kafka or event-driven architectures Experience working in Agile development environments Strong problem-solving skills and ability to work collaboratively Preferred Qualifications Experience working with large monolithic systems and microservices architectures Familiarity with cloud environments or containerized deployments Experience improving application performance and scalability Exposure to CI/CD pipelines and modern development workflows What We’re Looking For Successful candidates are engineers who: Are comfortable working across both frontend and backend Have experience contributing to production-grade applications Can quickly understand existing codebases and ship improvements Enjoy collaborating with teams to deliver features end-to-end Locations LATAM Remote status Fully Remote About Tight Line Tight Line represents the perfect synergy of expertise and ambition. Born from the merger of Rapid River (est. 2013) and Cactus Code (est. 2016). Our mission is simple yet bold: to attract the brightest minds in software development and empower them with meaningful, cutting-edge projects for clients across the globe. https://tightlinesoftware.com/ Founded in 2024 Co-workers 160+