Senior Backend Developer (Node.js)

Reply Group; Katowice; Hybrid; PLN 240,000 - 320,000; Full time

Job summary

A leading tech company located in Katowice is looking for a skilled Backend Developer with over 6 years of experience to support writing, deploying, and maintaining backend code for payment processing systems. The ideal candidate will have a strong expertise in TypeScript and Node.js, and experience with AWS services. Regular visits to the office are needed for a hybrid work model. Attractive benefits are offered, including a dedicated budget for medical care and language courses.

Benefits

Medical Care

Benefits Platform

Language Courses Platform

Training opportunities

Networking events

Qualifications

• 6+ years of experience as a Backend Developer with architectural responsibilities.
• Strong hands-on experience with native AWS services, particularly serverless architectures.
• Availability to work in a hybrid mode with at least 1 visit in the office per month.

Responsibilities

• Write, deploy, and maintain production-grade backend code for payment processing systems.
• Shape the architecture of distributed systems built with Node.js-based services.
• Solve reliability and scalability challenges in a high-integrity transaction environment.

Skills

TypeScript

Node.js

AWS services

Python

Rust

Agile methodologies

Information security

Communication in English

Communication in Polish

Education

Degree in computer science, mathematics, or physics

Job description

• We need your support in writing, deploying and maintaining production-grade backend code using TypeScript and Node.js for payment processing systems built natively on AWS.
• You will shape the architecture of distributed systems built with Node.js-based services and AWS-native components, with a strong focus on consistency, resilience and low-latency transaction processing.
• Together with your team you will solve reliability and scalability challenges in a real-world, high-integrity transaction environment using AWS-managed services.
• You will participate in operating, monitoring and continuously improving AWS-native Node.js backend systems running in production.
• You will collaborate closely with teammates and work with stakeholders across product, infrastructure and operations to make pragmatic and forward-looking decisions.
• Medical Care
• Benefits Platform
• Language Courses Platform
• Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choosemedical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms),cinema tickets, shop vouchers, discounts and many more.
• Language Courses –you'll have access to a multi-language learning platform enabling you to practice your language skills and learn new ones!
• Regular and systematic furthertraining opportunities - both internallyand from external providers. We support your ongoing learning and development.
• Cooperation within an internal community is our everyday reality. We havenetworking events, coding challenges, and company parties for different occasions.

Qualifications

• 6+ years of experience as a Backend Developer with architectural responsibilities
• Successfully completed a degree in computer science, mathematics, physics, or a comparable field of study
• Strong experience working with TypeScript and Node.js, as well as additional backend languages such as Rust or Python
• Strong hands-on experience with native AWS services, particularly serverless architectures
• Prior knowledge of card payments and information security is considered a plus
• Knowledge and practical experience in agile methodologies and understanding its principles
• Very good communication in English and Polish
• Availability to work in a hybrid mode with at least 1 visit in the office per month

About Nexi Digital

Nexi Digital is a Joint Venture between Reply and Nexi Group. It delivers cutting edge digital solutions for the Nexi Group, the European PayTech leader. Nexi Digital works with modern technologies, uses agile processes and methodologies, and it operates in a collaborative way with the Nexi Group to contribute to the success of all businesses. Our mission is to support the Nexi Group, to build and operate high-quality, distinctive and timely digital solutions which enable us to deliver value to Nexi’s customers across Europe.

How to become a Replyer

Level 1

Your application

You found an opportunity that suits you and your abilities? Perfect! Use our application form to send us your resume and credentials. Once we received your documents, you will get a confirmation via email.

Level 2

Our reply

We will now review your application and come back to you as soon as possible. If it’s a match, we will contact you for an interview.

Level 3

Your interview

Is it a fit? Do we match your expectations? What about the job requirements and the workplace? All that will be covered in the interview. If more than one Reply company is suitable for you, you have the possibility to participate in several interviews!