Senior Backend Developer (Node.JS)

Responsibilities

• 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.

  
  

Benefits

• Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical 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 further training opportunities - both internally and from external providers. We support your ongoing learning and development.

• Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions.

Qualifications

• Successfully completed a degree in computer science, mathematics, physics, or a comparable field of study

• 6+ years of experience as a Backend Developer with architectural responsibilities

• 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 is Europe's PayTech company operating in high-growth, attractive European markets and technologically advanced countries. Listed on Borsa Italiana's MTA, Nexi has the scale, geographic reach and abilities to drive the transition to a cashless Europe. With its portfolio of innovative products, e-commerce expertise and industry-specific solutions, Nexi provides flexible support for the digital economy and the entire payment ecosystem globally, across a broad range of different payment channels and methods. Nexi’s technological platform and the best-in-class professional skills in the sector lets the company operate at its best in three market segments: Merchant Services & Solutions, Cards & Digital Payments and Digital Banking & Corporate Solutions. Nexi constantly invests in technology and innovation, focusing on two fundamental principles: meeting, together with its partner banks, customer needs and creating new business opportunities for them. Nexi is committed to supporting people and businesses of all sizes, transforming the way people pay and businesses accept payments. It offers companies the most innovative and reliable solutions to better serve their customers and expand. By simplifying payments and enabling people and businesses to build closer relationships and grow together, Nexi promotes progress to benefit everyone.