Java/Kotlin Engineer-Payment Gateway

Hydrogen Group ·www.hydrogengroup.com

Location London, London, England
Work type Remote
Salary GBP 650 - 700 / month
Type Full time
Level Mid
Source Shazamme
Technology
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We’re supporting a major payments focused programme that is rapidly scaling across multiple value streams including merchant onboarding, point of sale, and transaction capture services.

We’re looking for several Senior Software Engineers with strong payments domain experience to join a growing engineering team delivering large-scale integrations and payment services.

Key Requirements

Strong experience working with payment gateways/payment processing systems

Commercial experience with:

  • Kotlin
  • Java
  • TypeScript
  • Experience working within scalable distributed systems
  • Strong understanding of integrations, APIs, and backend services
  • Comfortable contributing to architecture and stakeholder discussions
  • Previous fintech/payments experience highly desirable

Ideal Background

Experience with any of the following would be highly beneficial:

  • Payment gateways
  • Merchant onboarding
  • Point of Sale (POS)
  • Transaction capture
  • PSP integrations
  • Payment orchestration
  • PCI / secure payment environments

Additional Details

  • London based role
  • Hybrid working (2–3 days onsite)
  • Inside IR35

...

Frequently asked questions

Who is hiring for the Java/Kotlin Engineer-Payment Gateway role?
Hydrogen Group is hiring for the Java/Kotlin Engineer-Payment Gateway position, a Shazamme client. Apply directly on the employer's career site.
Where is the Java/Kotlin Engineer-Payment Gateway job located?
The Java/Kotlin Engineer-Payment Gateway role with Hydrogen Group is based in London, GB. The role is remote-friendly.
Is the Java/Kotlin Engineer-Payment Gateway role remote?
Yes — the Java/Kotlin Engineer-Payment Gateway position at Hydrogen Group is remote. Candidates based in GB are preferred.
What does the Java/Kotlin Engineer-Payment Gateway role pay?
Hydrogen Group lists the Java/Kotlin Engineer-Payment Gateway role at GBP 650–700 per month.
Is the Java/Kotlin Engineer-Payment Gateway role full-time or contract?
This is a full time position at Hydrogen Group.
What experience level is the Java/Kotlin Engineer-Payment Gateway role?
The Java/Kotlin Engineer-Payment Gateway position is aimed at mid-level candidates.
How do I apply for the Java/Kotlin Engineer-Payment Gateway role at Hydrogen Group?
Apply directly on Hydrogen Group's career page via the Apply button on this listing. ZammeJobs links straight through to the employer's ATS — no third-party form, no resume database.
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