Senior Golang Backend Engineer - FinTech & AI-Driven

DAFTCODE; Warszawa; On-site; PLN 180,000 - 260,000; Full time

Job summary

Daftcode in Warsaw, Poland is seeking a Mid/Senior Golang Developer to join our fintech and crypto-focused teams. You will design and develop applications, mentor teammates, and uphold architectural quality.

We value 4+ years of backend experience, 2+ years in Go, an AI-first mindset, and familiarity with Docker, Kubernetes, PostgreSQL, SQL, and CI/CD. Banking/Fintech exposure is a plus.

Qualifications

• At least 4 years of hands-on experience with backend development (any language).
• At least 2 years of commercial experience with Go.
• An AI-first mindset — you not only use AI tools in daily work, but also create flows and automate tasks with them.
• Experience in the banking industry or Fintech products
• Understanding business needs
• Knowledge of HTTP and REST
• Nice to Have : Familiarity with blockchain topics
• Experience integrating LLMs or AI APIs into products
• Experience with Docker and k8s
• Knowledge of CI/CD processes and deployment

Responsibilities

• Designing and developing applications
• Taking care of the technical quality of the application and system architecture
• Optimizing the application for performance
• Writing unit/integration tests
• Being a mentor and participating in code reviews

Skills

Go

Backend development

HTTP/REST

AI tools usage

Code reviews

Mentoring

Unit tests

Problem solving

Analytical mindset

Tools

Docker

Kubernetes

CI/CD

PostgreSQL

SQL

Job description

Daftcode in Warsaw, Poland is seeking a Mid/Senior Golang Developer to join our fintech and crypto-focused teams. You will design and develop applications, mentor teammates, and uphold architectural quality.

We value 4+ years of backend experience, 2+ years in Go, an AI-first mindset, and familiarity with Docker, Kubernetes, PostgreSQL, SQL, and CI/CD. Banking/Fintech exposure is a plus.