Go Backend Engineer — Scale a Fraud-Resistant Onboarding Platform

Prelude; Paris; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

BSPCEs

3 days in-office (Paris)

2 days WFH

4 weeks remote/year

Health insurance via Alan

Urban Sports Club

Swile meal vouchers

Laptop and phone provided

Annual offsite

Job summary

Prelude is redefining how companies authenticate and onboard users, and we are growing fast in Paris. We build a scalable platform using Go, Next.js, and a modern cloud stack, with a focus on performance and reliability.

As a senior engineer, you will own large parts of the backend and API, work across teams, and participate in on-call rotations while shipping features to hundreds of customers. Join a flat, impact‑driven culture in Paris, with hybrid work and strong emphasis on quality, speed

Qualifications

• Experience designing and engineering large-scale systems.
• Strong coding skills in Go; additional Rust/TypeScript experience is a plus.
• Preference for simple, scalable architectures.

Responsibilities

• Build and scale a distributed Go-based backend using DynamoDB, SQS, Lambdas.
• Develop a snappy full-stack app with Next.js on Vercel and gRPC.
• Advance the Prelude API for usability and performance.
• Ensure services are scalable, reliable and observable.
• Collaborate with clients to tailor features and handle on-call rotations.

Skills

Go

Rust

TypeScript

Tools

Next.js

Vercel

DynamoDB

SQS

Redshift

Lambdas

gRPC

Job description

Prelude is redefining how companies authenticate and onboard users, and we are growing fast in Paris. We build a scalable platform using Go, Next.js, and a modern cloud stack, with a focus on performance and reliability.

As a senior engineer, you will own large parts of the backend and API, work across teams, and participate in on-call rotations while shipping features to hundreds of customers. Join a flat, impact‑driven culture in Paris, with hybrid work and strong emphasis on quality, speed