Back End Developer

1 week ago

Tallinn Metropolitan Area, Estonia Finhost Full time

Who We Are:

Finhost is not just another fintech company — we build the technology that helps other fintechs (including financial institutions) launch and scale. Our platform powers white-label digital banking, crypto exchanges, and payment solutions across Europe, the UK, Canada, and beyond. Think of us as the invisible engine behind the future of finance.

We're growing fast and looking for a Senior Full-stack Engineer to elevate our architecture, code quality, and product. If you're passionate about building high-load, high-impact systems and enjoy working across both front-end and back-end, we'd love to talk.

Who We're Looking For

A smart, experienced, and confident engineer who cares about clean architecture, enjoys collaboration, and thrives in a high-impact environment.

Must-haves:

  • 5+ years of professional/commercial development experience, including at least 3 years with 

     and 
    TypeScript
     on the back-end
  • 3+ years working with 
    AWS
     and 
    serverless architecture (Lambda, API Gateway, EventBridge, SNS, SQS, S3, DynamoDB, PostgreSQL, Cognito, CloudFront, Route53)
  • Hands-on experience designing scalable systems for real-world business needs
  • Solid understanding of event-driven architectures and distributed microservices
  • Experience integrating with third-party APIs (HTTP, SDK, webhooks)
  • Data modeling expertise for both SQL and NoSQL databases (indexes, transactions, eventual/strong consistency, CDC)
  • Advanced PostgreSQL knowledge
  • Previous experience in fintech or crypto

Nice to have:

  • Strong experience with React (hooks, state management, modern patterns)
  • AWS EC2, VPC, RDS, Step Functions
  • GitHub Actions CI/CD knowledge
  • Passion for performance, security, and automation
  • React Native experience
  • Experience working in distributed teams or building products from scratch

Tech Stack We Love (and hope you do too):

  • Front-end:
     React, TypeScript, modern JavaScript (ES6+), Styled Components / TailwindCSS
  • Back-end:
     , TypeScript
  • AWS:
     Lambda, API Gateway, EventBridge/SNS, SQS (FIFO), S3, DynamoDB, Aurora PostgreSQL, Cognito, CloudFront, Route53
  • Infrastructure as code: Terraform, Serverless Framework / AWS CDK / AWS SAM

What You'll Be Doing:

  • Building and scaling full-stack fintech products that handle thousands of transactions
  • Designing and implementing architecture across both front-end and back-end
  • Collaborating with product managers and founders to deliver fast yet safe releases
  • Reviewing code and setting high standards for quality and security
  • Developing integrations with banks, payment providers, and crypto platforms
  • Contributing to the vision and future evolution of our platform

Why You'll Love It Here

  • Real impact: your code moves money across the globe
  • Lean & focused team: no politics, just builders
  • Work from anywhere (EU hours)
  • Ukrainian-rooted, globally minded
  • Transparent, honest, slightly geeky culture
  • We genuinely care about clean code and good documentation

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