Software Engineer (Remote - Contractor)

About Us_
// At Masabi, we’re driving the fare payment revolution, powering the journeys of millions all over the world. We build fare collection platforms that allow riders to seamlessly buy and present tickets for public transport either on their mobile phones, from a ticket machine, or even by tapping their bank card to travel. 

Our Justride platform is used in over 250 locations globally, including some of the largest cities in the world. With our industry-first mobile ticketing SDK, we’ve partnered with large players in the transport space, including Uber, Moovit and Transit. 

Your own journey is important to us too. Choosing a role here means joining a network of innovators from all walks of life; a group of passionate individuals who consistently deliver. Here, you’ll find the tools you need to build the career you want. Whether you’re taking the direct route or trying a new path, we’ll support you no matter what. 

The Role_
// We’re looking for a Backend Developer to help build and evolve the systems that sit at the heart of our platform, with a focus on payment flows and transaction processing.

You’ll work on services that handle high volumes of transactions, support complex fare logic, and integrate with external payment providers. As part of a cross-functional team, you’ll collaborate closely with engineers, testers, and product partners to deliver reliable, scalable solutions that directly impact riders around the world.

Location_
// This role is available in a fully remote model for candidates based in Poland

Responsibilities_

• Build and maintain backend services that support payment processing, fare calculations, and transaction flows

• Contribute to the design of scalable, secure and resilient systems

• Collaborate with cross-functional teams to deliver features from concept through to production

• Write clean, maintainable code and contribute to testing and code review practices

• Support integrations with third-party payment providers and financial systems

• Monitor and improve system performance, reliability, and observability

• Contribute to technical discussions, helping shape solutions and best practices

• Take ownership of your work and support team outcomes

About You_

• The ability to communicate clearly and effectively in both written and spoken English

• Solid experience building backend systems using languages such as Java or Kotlin the ability to quickly pick up new technologies and domains

• Experience working on payment systems, financial transactions or other high-integrity domains

• Understanding of distributed systems and building for scale and reliability

• Comfortable working with APIs and service-based architectures

• Thoughtful approach to code quality, testing, and maintainability

• Collaborative and team-oriented, with a willingness to share knowledge

• Strong problem-solving skills and a proactive mindset

• Clear communicator, able to work effectively across technical and non-technical teams

Our Stack_

//We don’t expect you to know the whole of our stack. We want the stack to keep evolving as developers identify new tools and frameworks.

• Java/Kotlin (backend)

• Event driven architecture, RESTful APIs

• AWS (DynamoDB, S3, SQS, EC2, ECS, Kinesis, etc.)

• Kafka

• Terraform

• Grafana

• Git / Gradle / Maven / Artifactory

Careers at Masabi are for people going places - driven by a mission to make transit fair and accessible for all.

// We are a network of innovators from all walks of life, passionate about making a difference. At Masabi, we operate with openness and trust, creating an environment where everyone feels empowered to bring their whole, authentic selves to work.

Whoever you are, just be yourself.
// We welcome applications from underrepresented groups, including disabled and neurodivergent people, and can make adjustments at any stage of the process. You’re also welcome to share your pronouns whenever you feel comfortable. Together, we simplify journeys, remove barriers, and improve daily life for millions.

Why Join Masabi?

• Driven by Purpose – We believe in journeys made simple. The work isn’t always easy, but the best things never are.

• Encouraged to Accelerate – Masabi is going places and our people are in the driving seat. Whether you’re taking the direct route or exploring new paths, we support your journey.

• Advancing with Empathy – We put people first and foster a culture of learning, not blame. No matter your cargo, we share the load.
  

We’re already powering journeys - are you ready to join us?