Currency

Mid Backend Developer

3 022 - 4 946 USDNet per month - B2B
JavaScript

Mid Backend Developer

JavaScript

Centrum, Kraków +4 Locations

GMI Software

Full-time
B2B
Senior
Remote
3 022 - 4 946 USD
Net per month - B2B

Tech stack

    English

    B2

    Nest.js

    advanced

    TypeScript

    advanced

    Google Cloud Platform

    regular

    PostgreSQL

    regular

    Node.js

    regular

    Express.js

    regular

    MySQL

    regular

    Amazon AWS

    regular

    Pulumi

    regular

Job description

Join Our Tech Team as a Senior Back-end Developer!


We are looking for a highly skilled Back-end Developer who can design and deliver scalable, reliable, and secure backend systems. This role is ideal for someone who thrives in cloud-native environments, enjoys solving complex engineering challenges, and values autonomy.


Necessary Qualifications


Programming Languages & Frameworks:

• Excellent proficiency in TypeScript, with experience designing and implementing scalable backend services

• Practical experience with Node.js and Express.js for building secure, fault-tolerant, and scalable backend systems

• Expertise in RESTful API design and maintenance, including authentication, rate-limiting, error handling, and versioning


Cloud & Infrastructure (Cloud & DevOps):

• Experience deploying and managing workloads on Google Cloud Platform (GCP) in production environments

• Strong Infrastructure-as-Code (IaC) skills, preferably with Pulumi (TypeScript)

• Familiarity with alternative IaC tools such as Terraform, AWS CloudFormation, or AWS CDK

• Solid understanding of cloud resource management and repeatable deployment workflows


Engineering Best Practices:

• Deep understanding of software development best practices: automated testing, CI/CD pipelines, logging, monitoring, and observability

• Strong debugging skills and experience with distributed system concepts

• Experience working with relational and non-relational databases such as PostgreSQL, Spanner, DynamoDB, and MongoDB


Preferred Qualifications


Industry Experience & Precision Handling• Experience in financial services, fintech, or blockchain environments

• Ability to work with non-floating-point numeric systems, including integer-based monetary values, fixed-precision decimals, and currency- or token-driven values

• Understanding of regulatory and operational constraints such as AML/KYC or payment flows (nice to have, not required)

Additional Technical Qualifications

• Experience designing or implementing cloud-native architectures: microservices, event-driven systems, containerized workloads

• Familiarity with serverless or managed compute services such as Cloud Run, Cloud Functions, or AWS Lambda

Soft Skills

• Ability to collaborate effectively with interdisciplinary teams including product, implementation, and compliance

• Strong communication skills and confidence in client-facing interactions (English required)

• High level of autonomy, ownership, and ability to deliver high-quality work in a dynamic environment


Perks & Benefits:

  • Straightforward Recruitment: We respect your time. Our 3-step process is designed to be quick yet thorough.

  • Flex Work Environment: Work from anywhere, really. Just ensure you're aligned with sprint goals and deliverables. We trust you to know your best productive times.

  • Personal Development Budget: Need to upgrade your workstation? Or eyeing a course? We allocate a budget for your professional growth and tools.

  • Skill Enhancement: We host in-house training sessions, especially for soft skills. It's optional, but we recommend it. Always good to refine those interpersonal skills.


Take The Leap with Your CV... Or Go the Extra Mile!


While we're keen to see your CV, we also appreciate those who think outside the box. How about recording a brief video about yourself and your journey so far? If you're more comfortable expressing yourself in Polish, feel free to do so! Taking this initiative won't go unnoticed. In fact, it's precisely the kind of drive and creativity we value.


Should you choose this path, we promise you two things:

  1. You'll be bumped up the list and receive priority during our selection process.

  2. You're guaranteed a spot in the first stage of our interview.


It's your chance to stand out. Show us not just what you've done, but who you are.


So, ready to get started? Send in that CV or surprise us with something unique! We're excited to see what you bring to the table.

Tech stack

    English

    B2

    Nest.js

    advanced

    TypeScript

    advanced

    Google Cloud Platform

    regular

    PostgreSQL

    regular

    Node.js

    regular

    Express.js

    regular

    MySQL

    regular

    Amazon AWS

    regular

    Pulumi

    regular

Office location

Published: 03.12.2025

Mid Backend Developer

3 022 - 4 946 USDNet per month - B2B
Summary of the offer

Mid Backend Developer

Centrum, Kraków

GMI Software

3 022 - 4 946 USDNet per month - B2B
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