Backend engineer for a commerce platform

Q-Tech; Barcelona; Híbrido; EUR 90.000 - 130.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Health insurance

Pension plan

Meal vouchers

Flexible compensation

Descripción de la vacante

Q-tech is expanding its Barcelona hub with a hands‑on Senior or Lead Engineer who loves coding and sharing knowledge. The role focuses on building scalable backend services in Node.js/TypeScript, driving a shift to serverless event‑driven architectures, and mentoring teams to raise the technical bar.

You will design integrations with payment providers and cross‑team platforms while actively steering AI adoption and architectural decisions to align with product vision.

Formación

• Senior Engineer or Tech Lead with cross‑team influence.
• Strong background building customer‑facing web services with JavaScript/TypeScript/Node.js.
• Experience designing scalable cloud services on AWS, ideally serverless and event‑driven.
• Hands‑on experience introducing AI‑assisted engineering practices.

Responsabilidades

• Build scalable, resilient backend services in Node.js and TypeScript (with some Rust) on AWS.
• Drive evolution to an event‑driven, serverless architecture (Lambda, DynamoDB, SQS, SNS).
• Design integration strategies with third‑party payment providers and commercial platforms.
• Mentor engineers and lead technical initiatives that affect the whole company.

Conocimientos

Node.js

TypeScript

JavaScript

AWS

Serverless architecture

AI adoption in engineering

Herramientas

AWS Lambda

DynamoDB

SQS/SNS

Copilot

Descripción del empleo

Описание:

At Q-tech, we collaborate with one of Europe’s leading streaming and entertainment groups, present in 11 countries and home to top-tier live sports such as Formula 1 and premier European football, as well as original series, films and live channels. Every sign-up, checkout, payment and subscription runs through their Commerce platform, which is the moment a viewer becomes a customer. They are opening a new technical leadership role in their Barcelona hub. They are looking for a hands‑on Senior or Lead Engineer who loves writing code and is just as eager to share knowledge, raise the technical bar and lead initiatives that affect the whole company.

Задачи:

Build scalable, resilient backend services in Node.js and TypeScript (with some Rust) on AWS. Drive the evolution from microservices and legacy components to an event‑driven, serverless architecture (Lambda, DynamoDB, SQS, SNS) while keeping complexity under control. Design integration strategies with third‑party payment providers and commercial platforms. Write real production code, including outside your own domain when another team needs support. Help define the technical direction of the Commerce platform in line with the long‑term product vision. Act as the bridge between teams on cross‑cutting problems, and help drive the engineering guilds and tech communities. Lead AI adoption in engineering: test what works (Copilot, spec‑driven design, AI‑assisted testing), share the trade‑offs openly, and help other teams adopt it. Challenge the “why” before the “how”: make sure the teams are solving the right problem. Mentor engineers and favour solid solutions over trendy ones. Help teams reach good decisions instead of imposing them.

Требования:

Solid experience as a Senior Engineer or Tech Lead, with a track record of influencing beyond your own team. Strong background building customer‑facing web services with JavaScript, TypeScript and Node.js. Experience designing scalable cloud services on AWS, ideally serverless and event‑driven. Experience with high‑traffic, high‑transaction consumer products. Ability to drive technical initiatives without formal authority. Hands‑on experience introducing AI‑assisted engineering practices. Experience modernising or migrating complex systems. Fluent English (working language).

Условия:

Permanent contract and 30 days of paid holiday Hybrid and flexible: 2 days a week in the Barcelona office. Private health insurance, a pension plan, flexible compensation and meal vouchers.