Back End Developer

Backend Engineer Amsterdam | Build Payment-Grade Distributed Systems | AWS, Cloud-Native | €85k + StockDo you want to grow into a genuinely strong backend engineer by working on distributed systems where correctness, reliability and security are non-negotiable?Would you like to work on modern payment infrastructure, learn from senior, principal and lead engineers, and become stronger in system design, production ownership and cloud-native backend engineering?And do you want an indefinite contract from day one, up to €85k salary+20k in stock options, and a high-bar international engineering culture in Amsterdam?Then this role is worth your attention.Your employer: cloud-native payments infrastructure built from first principlesYour employer is a fast-growing fintech scale-up in Amsterdam building modern payment infrastructure from the ground up.Many traditional players in this market still rely on legacy systems, complex operational processes and technology choices from a different era. This company is taking a different route: cloud-native, API-first and built with modern engineering principles from day one. The product sits deep in the payments domain. That means engineering decisions matter. Services need to be secure, observable, reliable and correct. Failure handling, data consistency and production ownership are not theoretical topics here. They are part of daily engineering.This is a medium-sized technology company with more than 30 nationalities. The engineering culture is high-bar, but human. Low ego matters. Feedback is direct and respectful. People care about quality, ownership and helping each other grow.You will work with strong backend, infrastructure, product and business people who are building a serious alternative to large incumbents in the payments market. Not by shouting about disruption, but by building better infrastructure.Your job: Backend Engineer AmsterdamAs Backend Engineer, you help build and operate backend services at the core of a modern payments platform.You work on distributed backend systems where correctness, observability, failure handling and reliability are central. You contribute to services that process sensitive financial data and need to behave predictably under real production conditions.You own your work beyond the pull request. You help design, implement, test, deploy and improve services in production. You work closely with backend engineers, infrastructure engineers, product and business stakeholders to keep improving the platform.The main backend language in the team is TypeScript. You do not need to be a TypeScript engineer today. Engineers with strong Java, Kotlin, Go, Scala, C# or other backend backgrounds can fit very well here.What matters most is that you understand backend engineering fundamentals: designing services, thinking about correctness, testing properly, handling failure, debugging production issues and taking ownership of the systems you build.This is not a language-identity role. This is a backend engineering role in a modern payments environment.You will receive regular feedback and mentorship from experienced senior, principal and lead engineers. Over time, you can grow towards senior, lead or principal backend engineering, depending on your strengths and ambitions.What is required3 to 7 years of professional backend engineering experienceStrong backend experience with Java, Kotlin, Go, Scala, C#, TypeScript/Node.js or another strongly typed backend languageStrong computer science fundamentals and preferably MSc in Computer Science, Software Engineering, Distributed Systems, Mathematics, Physics or similarExperience building backend services that run in productionExperience with distributed systems, microservices, asynchronous processing, queues, messaging or event-driven architectureExperience with cloud-native environments, preferably AWSStrong testing mindset and care for reliability, maintainability and correctnessExperience running your own code in production, including monitoring, logging, alerting, debugging or incident investigationAbility to explain technical decisions clearly in EnglishLow ego, curious, collaborative and eager to learnPractical interest in AI tools and modern engineering productivityNice to haveExperience with payments, fintech, banking, billing, invoicing, marketplaces, e-commerce or other transaction-heavy domainsExperience with Kafka, RabbitMQ, SQS, SNS, Pub/Sub, DynamoDB, retries, DLQs, idempotency or duplicate processingExperience with systems where data correctness, auditability, security or recovery are importantExperience with AWS serverless, Lambda, ECS, DynamoDB, SQS, Terraform or CI/CDSome mentoring, onboarding, design-review or technical-guidance experienceWhat is offeredSalary up to €85.000 + €20.000 stock option packageIndefinite contract from day one25 holidaysExcellent pensionFlexible working hoursWorking from home options, with around 3 office days in AmsterdamTravel expense reimbursementLaptop or MacBookBeautiful office with free parking optionsStructured feedback and active mentorshipOpportunity to learn from senior, principal and lead backend engineersInternational team with more than 30 nationalitiesStrong social culture and collaborative engineering environmentClear growth path towards senior, lead or principal backend engineeringLong-term product environment focused on quality, ownership and technical depthInterested?Would you like to grow as a backend engineer in a cloud-native payments environment where correctness, ownership and engineering quality really matter?Reach out via the form or contact Robert Hawker at r.hawker@codeguild.nl.