Research Scientist, Kaggle
Google (10000+ pracowników)
Programowanie Frontend
Programowanie Backend
Poland
Pełny etat
Law
Doctoral degree
Java
Master's degree
C++
JavaScript
Natural language processing
AI
Python
Mobile devices
Backend Software Engineer
4soft
Programowanie Backend
Just Join IT
Warsaw(Poland)
Wrocław(Poland)
Kraków(Poland)
Zdalnie
Pełny etat
Senior
18,000 - 23,000 PLN / miesiąc
Node.js
TypeScript
APIs
AWS
CI/CD
Terraform
Kubernetes
JavaScript
Java
Go
We've been building digital products for over 10 years, with a strong focus on Blockchain-based applications. At 4soft, people come first - it's our team of passionate technologists that enables us to work with international clients and deliver innovative solutions. We believe in transparency, effective teamwork, and achieving real business outcomes for those we serve.
Want to build backend systems that move real money between fiat and crypto? Growth and a great team culture matter to you? 4soft is the perfect place to find both.
Join our client's team, a fast-growing scale-up in the fiat-to-crypto payments space, and take ownership of core parts of its onramping platform.
Tech environment: Node.js, TypeScript, APIs, AWS, CI/CD, Terraform, Kubernetes
As a Backend Software Engineer, you will be responsible for:
Designing and building robust, scalable backend services and APIs in Node.js and TypeScript
Working closely with product to shape features from discovery through delivery, not only building to a spec
Owning work end to end: scoping, building, shipping and monitoring
Writing secure, well-tested, production-ready code for systems with real uptime requirements
Contributing to and improving CI/CD pipelines, deployment processes and cloud infrastructure
Taking part in code reviews, architectural discussions and technical decision-making
Helping keep production systems reliable and observable, and responding when things go wrong
What we expect from you:
Strong, production-proven JavaScript/TypeScript experience, including real use of the type system
Solid backend experience. Node.js is preferred; excellent backend experience in Java, Go or Python is acceptable
Hands-on production experience with cloud infrastructure on AWS, GCP or Azure
Working understanding of CI/CD pipelines and modern deployment practices
A security-conscious approach: attack surfaces, data handling and least-privilege access are habits
Genuine interest in crypto and in the company's product
Ability to work with product teams, translate between technical constraints and business needs, and push back when needed
English proficiency at C1 level or above (for international client collaboration)
Polish language skills at B2 level or above (for smooth communication with the team)
Great if you also bring:
AWS experience specifically
Terraform for infrastructure-as-code
Kubernetes for container orchestration
Fintech experience, particularly payments, transactions or regulated financial systems
What helps us stay balanced:
Grow your skills and hobbies with us - make use of a dedicated training and wellbeing budget
Work from home or the office - your choice, up to 100% remote
Access to specialists whenever you need them via our LuxMed healthcare package
If the gym is your second home, activate a Multisport card with us
Looking for a long-term home? You're in the right place - stable collaboration, no dress code, no heavy atmosphere
Our team knows how to have fun: board games, city outings, go-kart races, laser tag, great food on team retreats - we take integration seriously (in the best way :)