Senior Full-stack Engineer

Job details

Posted Wednesday 18 February 2026
Job type Permanent
Reference 473
Recruiter Name Ronan O'Sullivan

Galway (Hybrid) | Remote in Ireland considered

Want to build systems that truly matter, not just another dashboard for tracking office coffee consumption?

Our client, a leading technology company, is building a next-generation platform used in law enforcement, finance and intelligence. Think data fusion, serious search, visualisations and smart LLM integration. Real-world impact. Real technical depth. No fluff.

They’re looking for a Senior Full-Stack Engineer who can genuinely own systems end-to-end.


💻 What You’ll Be Doing

You won’t be “just backend” or “just frontend.” You’ll:

  • Build production-grade Python systems (FastAPI or similar)

  • Design clean, robust APIs that don’t fall over under pressure

  • Handle async, streaming, background tasks and real-world performance issues

  • Create rich React + TypeScript frontends with complex, data-heavy UIs

  • Think about failure modes, scaling and long-term operability

  • Ship systems that last, not demo-ware that dies in 3 months

You’ll be working on search, analytics, and data-heavy workflows, so if databases, indexing strategies, or high-scale systems excite you… you’ll be in your element.


🧠 What We’re Looking For

You’re someone who:

  • Has strong Python in production

  • Is genuinely comfortable across React + TypeScript

  • Understands architecture trade-offs (and can explain them)

  • Has shipped systems that survived real users

  • Can review code written by humans… and LLMs (yes, that’s part of the job)Doesn’t need a 40-page spec to function

Bonus points if you’ve worked with:

  • OpenSearch / Elasticsearch

  • ClickHouse or large-scale OLAP systems

  • Kubernetes, Docker, and cloud deployments

You don’t need to be an SRE. But if a pod breaks, you shouldn’t stare at it like it’s a philosophical puzzle.


🚫 What This Is Not

  • Not a pure frontend role

  • Not a pure backend role

  • Not a “we built a demo once” environment

  • Not micromanaged

They want engineers with opinions. Engineers who can say:

“That won’t scale.”
“That’s risky.”
“Here’s a better way.”

And then back it up.


🌟 Why This Role Is Interesting

  • Serious technical challenges

  • Real ownership from day one

  • High-trust environment

  • Smart, opinionated team

  • Hybrid working available

  • Salary based on ability, coupled with stock options, so you have skin in the game

You’ll build systems that are used in high-stakes environments. That’s not something you get to say every day.


If you’re a genuine end-to-end engineer who enjoys building production systems that live longer than your average SaaS trend, this could be a great move.

Ready for the next step?
Apply today