Senior Software Developer
Valencia
Full-time
Permanent employee
Your mission
Step into a key role as a Senior Software Developer, taking ownership of complex cloud-based applications built on AWS with TypeScript, GraphQL, JavaScript, and React.js. You'll architect robust, scalable, and secure solutions while actively shaping how we build. Leveraging AI coding tools responsibly to accelerate delivery, mentoring junior developers, and driving the technical decisions that keep our codebase ahead of the curve.
Your profile
- 5+ years of hands-on experience in designing and owning full stack features from architecture to deployment
- Deep expertise in cloud architecture, specifically AWS services
- Strong proficiency in TypeScript, GraphQL, JavaScript, and React.js
- Confident using AI-assisted coding tools (e.g. GitHub Copilot, Cursor, Claude Code) to boost productivity and knowing when not to trust them
- Experience reviewing, validating, and integrating AI-generated code into production systems with a critical eye for quality, security, and edge cases
- Track record of driving architectural decisions and establishing technical best practices
- Experience mentoring developers and contributing to a culture of continuous learning
- Strong problem-solving skills and able to lead independently and collaborate cross-functionally
Why us?
Explore the unique benefits of joining the LumiSphere:
- Embrace a "Digital first" approach in projects and daily work, facilitated by modern SaaS tooling
- Enjoy a modern office in Valencia, conveniently located and easily accessible
- As a young and growing company, we offer real opportunities for professional development beyond your assigned responsibilities
- Embrace the flexibility of remote work
- Access a dedicated training budget to foster your ongoing growth
- Personalize your workspace with our "Build your Dream Workplace" initiative, allowing you to choose your preferred hardware
- Experience flat hierarchies, a well-structured onboarding process, and a team that has your back from day one
About us
Starting off in the automotive realm, we launched Lumibit in 2021. We quickly realized the potential of automating processes and leveraging existing solutions to enhance efficiency across projects.
OUR MISSION
In this ever-expanding realm of digitalization, our aim is clear: harness our expertise to deliver targeted solutions. Through automated, sustainable software solutions, we're dedicated to ensuring our clients' long-term success efficiently. Our team comprises passionate individuals from IT, automation, and automotive backgrounds. We leverage our unique strengths collaboratively to reach our shared objectives.
OUR MISSION
In this ever-expanding realm of digitalization, our aim is clear: harness our expertise to deliver targeted solutions. Through automated, sustainable software solutions, we're dedicated to ensuring our clients' long-term success efficiently. Our team comprises passionate individuals from IT, automation, and automotive backgrounds. We leverage our unique strengths collaboratively to reach our shared objectives.