Senior Full-Stack Engineer

OnHires; Barcelona; A distancia; EUR 40.000 - 60.000; Jornada completa

Descripción de la vacante

Join a venture-funded startup founded by engineers from top-tier institutions focused on data intelligence and software optimization. As a developer, you'll work with cutting-edge technologies and have a significant role in shaping the product and its development processes. Enjoy a remote-first culture with competitive compensation, unlimited time off, and collaboration with world-class engineers.

Servicios

Competitive compensation + equity

Unlimited paid time off

Flexible hours

Direct collaboration with engineers

Formación

• Strong full-stack experience in modern web applications.
• Production experience in Go preferred or motivation to learn quickly.
• Ability to work independently on complex features.

Responsabilidades

• Design and maintain both public and internal APIs.
• Collaborate with teams on cloud-native deployment.
• Write clean, well-tested code and mentor others.

Conocimientos

API Development

Go

Kotlin

Java

Python

TypeScript

CI/CD

Kubernetes

PostgreSQL

RESTful APIs

Educación

MSc or PhD in CS, Math, or Physics

Herramientas

GitHub Actions

CircleCI

Docker

Descripción del empleo

Our client is a venture-funded startup founded by engineers from NASA, AWS, LinkedIn, Meta, MIT, and other top-tier institutions. They’re building a data intelligence platform focused on securing and optimizing the software development lifecycle (SDLC).

What You’ll Do

Work closely with APIs and surface insights from the data platform

Design and maintain both public and internal APIs

Collaborate with the infrastructure team on cloud-native deployment (Kubernetes, GCP)

Write clean, well-tested, maintainable code

Participate in code reviews and mentor other engineers

Contribute to hiring and technical culture

Backend : Go (primary), Kotlin / Java / Python

Frontend : TypeScript with any modern JS framework (Svelte is used, but not required — React, Vue, Angular all accepted)

CI / CD : GitHub Actions, CircleCI, Docker

Bonus : Experience with immutable data, Linux profiling, and open-source search systems

Strong full-stack experience in modern web applications

Production experience in Go (or strong motivation to pick it up quickly)

Experience working with RESTful APIs, PostgreSQL, and backend logic

Familiarity with cloud infrastructure, Kubernetes, and CI / CD pipelines

Ability to work independently and own complex features end to end

Experience with developer tools or data platforms is a big plus

A pragmatic mindset, high technical standards, and a product-oriented focus

Nice-to-Haves

Background in immutable data, distributed systems, or search infrastructure

Advanced SQL query tuning and Linux optimization

MSc or PhD in CS, Math, or Physics

Interview Process

CEO interview

Math interview

Technical interview #1 (live coding)

Technical interview #2 (live coding)

Final interview with the CTO or co-founder

What’s in It for You

High ownership in an early-stage, well-funded product company

Direct collaboration with world-class engineers

Competitive compensation + equity

Remote-first culture with strong autonomy and team cohesion

Unlimited paid time off and flexible hours

Interested?

Apply now or reach out — we’ll be happy to share more details about the product, culture, and team.