Back End Developer

RevTech; Lisboa; Hybrid; EUR 72,000 - 88,000; Full time

Job summary

RevTech in Lisbon is seeking a Senior Backend Developer to design, build, and scale backend services using TypeScript. You will work on real-time data pipelines, optimize PostgreSQL and ClickHouse, and help improve system observability and resilience.

The role offers a hybrid Lisbon setup and a salary up to €80,000 with benefits. You will join a small, ambitious engineering team solving high-throughput data challenges and influencing architectural decisions.

Qualifications

• 4+ years of backend development experience in a commercial setting.
• Strong proficiency in TypeScript for backend services.
• Experience designing REST and WebSocket APIs.
• Solid knowledge of relational databases, especially PostgreSQL and ClickHouse.
• Ability to analyze complex technical problems and propose effective solutions.

Responsibilities

• Design, build and scale reliable backend services and REST/WebSocket APIs using TypeScript.
• Work on data pipelines that ingest, process and serve large volumes of real-time data.
• Optimize PostgreSQL and ClickHouse databases and improve overall system performance.
• Improve observability and resilience across the platform.
• Contribute to architecture decisions and technical design reviews.

Skills

TypeScript

API design

Backend development

Real-time data

Tools

PostgreSQL

ClickHouse

Job description

Senior Backend Developer (TypeScript) | Lisbon (Hybrid) | Up to €80,000 + Benefits

I'm partnering with a fast-growing technology company building highly scalable, real-time data infrastructure used in a performance critical environment

They're hiring a Backend Developer to join the team working on their risk management platform, alongside a small, ambitious engineering team solving complex challenges around scalability, reliability, and high throughput data ingestion.

What you'll do

• Design, build and scale reliable backend services and REST/WebSocket APIs using TypeScript


• Work on data pipelines that ingest, process and serve large volumes of real-time data


• Optimise PostgreSQL and ClickHouse databases and improve overall system performance


• Improve observability and resilience across the platform


• Contribute to architecture decisions and technical design reviews

What you'll need

• 4+ years of commercial backend development experience, with strong TypeScript proficiency


• Experience designing and building APIs (REST and WebSocket)


• Solid knowledge of relational databases, ideally PostgreSQL and ClickHouse


• Ability to analyse complex technical challenges and propose effective solutions


• Strong communication skills with a proactive, ownership-driven mindset

This is an excellent opportunity to join a high-growth business where you'll have genuine ownership, influence technical decisions, and work on systems where performance and reliability truly matter.