Senior Java Software Engineer

Senior Java Software Engineer WHAT WE DO Founded in 2007, Growth Acceleration Partners (GAP) is a consulting and technology services company. We consult, design, build and modernize revenue-generating software and data engineering solutions for clients. With modernization services and AI tools, we help businesses achieve a competitive advantage through technology. GAP’s remote, integrated engineering teams use end-to-end solutions to innovate and align with your business goals. We have 600+ English-speaking engineers based in Latin America and approximately 20 U.S.-based engineers. With some of the highest customer satisfaction scores in the industry, GAP’s focus is customer and employee success. GAP is a woman-owned company headquartered in Austin Texas. We are a values-based company focused on growing our people by investing in education, onsite English classes and training in the latest technologies, including AI, data analytics and machine learning. Our goal is to provide solutions for our customers that help them achieve critical business outcomes, while enabling our GAPSters and our communities to attain long-term success. Summary We are seeking a Senior Java Backend Engineer with strong API and data integration experience to support, maintain, and modernize our core backend services and client-facing API products. In this role, you will be responsible for ensuring the reliability of legacy Java platforms, managing API integrations used by external clients, and helping bridge the gap with our AWS-native data-onboarding pipelines. This is an autonomous, high-impact position within an understaffed team where your ability to dissect legacy code, troubleshoot production issues, and make pragmatic technical choices will directly protect business continuity. Education Bachelor’s Degree in Computer Science, Software Engineering, Information Systems, or a related technical field. Professional Experience 5+ years of professional experience in backend software development, focusing heavily on Java frameworks. Proven track record of designing, securing, and maintaining production-grade REST APIs and public-facing API integrations. Extensive background in production support, identifying bottlenecks, and debugging complex distributed systems. Solid experience working with and maintaining database systems, schemas, and complex backend data flows. Key Responsibilities Maintain, optimize, and extend legacy Java backend services and data pipeline structures. Manage, support, and enhance public-facing API products utilized by enterprise clients to access our platform. Provide advanced production support, troubleshooting critical system alerts, analyzing logs, and implementing stable fixes. Collaborate closely with Data Engineers to support overall pipeline health, cloud integrations, and client onboarding processes. Document code structures, API schemas, integration patterns, and troubleshooting guides to reduce operational risk. Evaluate legacy backend modules and draft safe, incremental modernization and performance tuning strategies. Required Technical Skills Strong experience in several of the following areas: Java Mastery: Deep expertise in core Java backend development, concurrency, and enterprise framework standards. API Development: Comprehensive knowledge of RESTful API design, OpenAPI/Swagger documentation, security protocols, and integration architectures. Database Engineering: Strong SQL proficiency, schema migration experience, and database optimization skills. Sustaining Engineering: Exceptional debugging, code profiling, and runtime troubleshooting within complex legacy codebases. Nice to Have Familiarity with Python development, AWS serverless services, or cloud-native data pipelines. Practical experience leveraging agentic AI-assisted development tools (e.g., Claude Code, Cursor, or Codex) to rapidly map legacy repositories and reverse-engineer undocumented systems. Prior experience in compliance-heavy industries, fintech, tax systems, or financial services. Soft Skills Advanced English proficiency with excellent technical written and verbal communication skills. Outstanding system archaeology skills—comfortable working with legacy code, incomplete documentation, and complex dependencies. High level of personal ownership, initiative, and the ability to operate independently. Strong cross-functional alignment, working easily with Product, Support, and DevOps stakeholders. At Growth Acceleration Partners, we're an equal opportunity employer committed to building a diverse and inclusive team. We value everyone's unique background, and we provide equal opportunities regardless of race, color, creed, religion, sexual orientation, gender identity, age, national origin, disability, marital status, veteran status or any other personal right protected by law. We foster a culture of belonging and strive to provide a welcoming environment where everyone feels safe to contribute and grow. Department Development Role Senior Software Engineer Locations Colombia, Costa Rica Remote status Hybrid Employment type Full-time Main Technology Java