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HOME Software Engineering & Dev Senior or Mid Backend Software Engineer (m/f/d)
Tradevest Polska SP. Z O.O. VERIFIED EMPLOYER

Senior or Mid Backend Software Engineer (m/f/d).

Software Engineering & Dev Full-Time
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Senior or Mid Backend Software Engineer (m/f/d): our view in 3 lines...

  • The Role:Backend software engineering role for someone building cloud-native services in a fintech system.
  • The Person:The person will build and extend Go microservices, write tests, tune DynamoDB and PostgreSQL data models, improve CI/CD and observability, and help with architecture reviews and mentoring.
  • Requirements:The ideal candidate has 3+ years of professional back-end experience, ideally 1 year+ in Go, with working SQL and NoSQL skills, cloud-native design, and comfort diagnosing performance bottlenecks.

About the role

Tech stack you’ll work with

  • Core: Golang, AWS Serverless (Lambda, API Gateway, SQS)
  • Data: DynamoDB, PostgreSQL
  • Messaging: Kafka
  • Ops / Tooling: Terraform, Guthub Actions (CI/CD)

(If you haven’t touched every tool yet, no worries — we’ll get you up to speed.)

Your mission and responsibilities

Mid Backend Software Engineer

  • Implement new micro-services and extend existing ones in Go.

  • Help groom user-story requirements and surface performance / scaling concerns early.

  • Write unit, integration and API tests; review PRs.

  • Tune data-models in DynamoDB & Postgres for low-latency, high-throughput workloads.

  • Pair with DevOps on CI/CD and observability improvements.

  • Participate in on-call rotation as we’re building high available fintech system

Additional tasks of the Senior

  • Design and drive high-scale, low-latency services (tens of thousands of orders / sec).
  • Lead architecture reviews, challenge assumptions and keep tech debt in check.
  • Partner with Product on roadmap feasibility & effort sizing.
  • Be a mentor to less experienced colleagues

Your qualifications and experience

  • 3+ years of professional back-end experience (ideally 1 year+ in Go).

  • Solid grasp of cloud-native design (RESTful APIs, event-driven patterns).

  • Working SQL and NoSQL skills; know when each shines.

  • Comfort diagnosing performance bottlenecks in distributed systems.

  • Ability to work on-site in Warsaw twice a week (Tue & Thu) and remotely otherwise.

Nice to have

  • Exposure to serverless architectures on AWS.

  • Experience with Kafka or another high-volume message bus.

  • Knowledge of automated trading, market data, or FIX/crypto exchanges.

  • Familiarity with Infrastructure-as-Code (Terraform or CDK).

Contract

B2B / Employment contract

Location

Hybrid (Warsaw – in-office every Tuesday & Thursday)

Why us?

What We Offer:

  • An experienced, welcoming team that loves clean, well-tested code.

  • Real impact: the features you ship go straight into production for live traders.

  • Flexible hours, modern tooling, and a fintech domain that’s never boring.

  • Occasional work travel to Germany (Munich / Berlin)

  • 20 days PTO on B2B

  • Multisport card

Apply now!

Apply now!

Published September 5, 2026
Location Warsaw, Poland
Category Software Engineering & Dev  
Job Type Full-Time  

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