18.02.2026

Senior Software Developer

Payment Gateway

We are looking for an experienced Senior Software Developer to help build a centralized payment platform for our enterprise‑level client.

Start

April-May

Duration

Until end of 2026

Location

Helsinki, remote

Allocation

100%

Current payment solutions have been created separately for different marketplaces, and the goal is to replace them with a customized payment gateway solution. The new platform will serve as a centralized integration layer toward banks and payment service providers, enabling modern, reliable payment methods and a consistent omnichannel customer experience.

Your role

As a Senior Software Developer, you will focus on implementation, integrations, and producing high‑quality code. You will work hands‑on with core payment technologies and contribute to the platform’s development direction.

What we expect from you

Strong experience with payment environments, payment methods, or payment services
Background in payment service integrations
Experience with banking interfaces, payment service providers, or payment gateway solutions
Understanding of security, reliability, and scalability in payment flows
Ability to work independently and collaborate with various stakeholders

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