Senior Full-Stack Engineer

ExpereoAmsterdamHybridFull-time1 Oct 2026

Expereo is seeking a Senior Full-Stack Engineer in Amsterdam to build and run the digital surfaces for its Commercial STO, with a front-end center of gravity in React and TypeScript and full-stack reach into Node.js services and integrations. The role owns features end-to-end, from front-end delivery to service layer, Salesforce integrations, and production operations on AWS. Requires 5+ years of professional software engineering experience.

What you'll do

Own the React and TypeScript front ends, from component structure and state management to data fetching, caching, and performance
Turn requirements from commercial and operations users into production-quality experiences
Keep the front-end codebase coherent as it grows: shared components, consistent patterns, and a design language
Bring the consumer's view into API design
Implement the service layer each feature needs, REST or GraphQL, working contract-first from OpenAPI specifications
Build and maintain integrations with Salesforce and other core systems
Implement authentication and authorization for features
Keep interfaces versioned and backward-compatible
Read and work at the C#/.NET integration points
Own the delivery path: configure, deploy, observe, and operate surfaces on AWS
Use feature flags as the delivery mechanism
Write tests that give real confidence and drive automated quality gates in CI
Diagnose and resolve production issues
Maintain living technical documentation: API specs, architecture decision records, and integration guides
Work directly with product owners, quote management, service operations, the architect in the Innovation team, and other engineering teams
Translate technical constraints and design decisions into plain language for stakeholders
Participate in design reviews, sprint reviews, and technical decision-making
Raise the bar through code review, example implementations, and clear written reasoning
Help onboard other engineers onto the codebase

What you need

Must-have

ReactTypeScriptNode.jsREST APIsGraphQLOpenAPIC#/.NETAWS

Nice-to-have

SalesforceAWS AmplifyAWS LambdaAWS API GatewayAWS CognitoAWS S3OAuth2OIDC

Soft skills

Product-mindedEnd-to-end ownershipReliabilitySimplicityContract-first mindsetCuriosityCollaborationCommunication

Full-Stack EngineerSeniorReactTypeScriptNode.jsAWSSalesforceIT ServicesHybridAmsterdam

/What you'll do

/What you need

Must-have

Nice-to-have

Soft skills

What you'll do

What you need