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Software Engineering · Heredia · Hybrid

Senior Full Stack Engineer (Java & React)

Are you passionate about building scalable, high-impact applications and solving complex algorithmic challenges? At First Factory, we’re looking for an exceptional Full Stack Engineer to join our team and partner with a premium commercial and luxury real estate client on cutting-edge solutions.

If you thrive in highly technical environments, love deep-dive system design, and pride yourself on writing flawless code under pressure, this is the challenge you’ve been looking for.

About First Factory

We are a software development company with over two decades of experience, boasting a dynamic team of 175+ professionals actively engaged in diverse projects across various industries. We invite you to join us on this journey as we continue to thrive and embrace fresh challenges.

About You

  • You love algorithmic challenges: You genuinely enjoy solving complex, multi-layered logical puzzles and optimizing code for both time and space complexity.

  • You are an articulate problem solver: You excel at "thinking out loud," collaborating through complex architecture design under tight timelines, and defending your technical decisions with data.

  • You thrive under scrutiny: You view rigorous technical evaluations and deep-dive code reviews not as a hurdle, but as an opportunity to showcase your engineering excellence.

  • You seek deep ownership: You are looking for a singular, high-impact project where you can immerse yourself completely and take full accountability for the end-to-end lifecycle.

Core Requirements

  • Java Mastery: Strong, production-level experience with Java (8+) and the Spring Framework ecosystem.

  • Frontend Expertise: Hands-on experience building robust, highly responsive UIs with React and modern JavaScript (ES6+).

  • Architecture & Microservices: Strong knowledge and practical experience designing and implementing modern Microservices architectures and RESTful APIs.

  • Advanced Computer Science Fundamentals: Mastery of data structures, algorithmic complexity (Big-O notation), runtime optimization, and high-level system design patterns.

  • Agile Mindset: Experience collaborating in high-performing, fast-paced Agile teams.

  • Strong Technical Communication: Advanced English fluency with the ability to articulate complex technical ideas, rationale, and architectural trade-offs clearly to both technical and non-technical stakeholders.

Nice to Have

  • Experience with CI/CD pipelines and cloud infrastructure (AWS, Azure, or GCP).

  • A strong portfolio of competitive programming, HackerRank/LeetCode success, or complex open-source contributions.

Department
Software Engineering
Role
Full Stack Engineer ( Java & React )
Remote status
Hybrid

About First Factory

For over 25 years, First Factory ​has been a place where collaborative excellence meets ​modern technologies. We’re a strong team building exceptional software solutions from Costa Rica​ and LATAM for ​primarily US-based clients. With industry-low turnover, top eNPS globally, and 5 consecutive Inc. 5000 awards, we foster an environment where talented engineers thrive on challenging projects using modern tech stacks.​

Founded in 2000
Coworkers 180+
Software Engineering · Heredia · Hybrid

Senior Full Stack Engineer (Java & React)

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