Hybrid Software Engineer

at Trustpilot

• Job title: Software Engineer
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: Not specified
• Degree requirement: No Education Requirement
• Tech skills: AWS, Cloud, DynamoDB, JavaScript, Node.js, Postgres, React, SQL, Terraform, TypeScript
• Location requirements: Hybrid, Copenhagen, Denmark

About the role

• Software Engineer building backend services for Trustpilot's fraud detection systems. Responsible for integrating models and maintaining internal tools while collaborating with a new team.

Responsibilities

• Building and maintaining backend services that process high volumes of event-driven data for fraud and misuse detection (SNS, SQS, Lambda)
• Integrating detection models produced by our Data Science team into scalable enforcement pipelines
• Maintaining and improving internal React frontends used by our investigations team
• Contributing to infrastructure decisions using Terraform and AWS CloudFormation
• Participating in incident response, performance debugging, and database query optimisation (PostgreSQL, DynamoDB)

Requirements

• TypeScript/JavaScript and Node.js backend development — not just familiarity, but services you've owned end-to-end
• Relational and non-relational databases (SQL concepts, query optimisation, understanding of when to use each)
• Asynchronous, event-driven systems — you've worked with message queues or async processing patterns, and understand why they matter at scale
• Cloud infrastructure (AWS preferred) — you've deployed and operated services, not just provisioned a free-tier bucket
• React — enough to be productive on an internal tooling frontend
• Experience with fraud detection, trust & safety, or high-volume data processing (Nice to have)
• Familiarity with Infrastructure as Code (Terraform, CloudFormation) (Nice to have)
• Interest in how ML models integrate into backend systems (Nice to have)
• Comfort working in an environment where the team structure is still being established — you see that as opportunity, not uncertainty (Nice to have)

Benefits

• A range of flexible working options to dedicate time to what matters to you
• Competitive compensation package + bonus
• 25 days holiday per year, with an extra 5 days holiday allocated after your 1 year anniversary (prorated)
• Two (paid) volunteering days a year to spend your time giving back to the causes that matter to you and your community
• Rich learning and development opportunities are supported through the Trustpilot Academy and Blinkist
• Comprehensive health package, pension, and full access to Headspace, a popular mindfulness app to promote positive mental health
• Paid parental leave
• Central office with a laid-back vibe and constant buzz of different languages being spoken everywhere you go It’s complete with a coffee bar, canteen, and table tennis and has a wide variety of refreshments available - you can opt-in for breakfast and lunch at an affordable price
• Regular opportunities to connect and get to know your fellow Trusties, including company-wide celebrations and events, ERG activities, and team socials
• Opportunity to join the Trustpilot Social Club for a small monthly fee and attend regular social and leisure activities like go-karting, cooking classes, and escape rooms
• Employee discounts to restaurants and shops