Software Engineer (Backend)

Teya; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A payment and software service provider in London is seeking a Backend Engineer to maintain and evolve critical backend services. Candidates should have at least 5 years of experience in Backend Engineering and proven hands-on experience with Java or Kotlin. Responsibilities include ensuring code quality, taking ownership of initiatives, and participating in support rotations. Join a mission-focused team that values small, local businesses, and offers a comprehensive benefits package.

Benefits

Continuous learning opportunities

Supportive community

Comprehensive benefits

Qualifications

• 5+ years of Backend Engineering experience.
• 3+ years of hands-on experience with Java or Kotlin in production systems.
• Strong debugging, problem-solving, and communication skills.
• Expertise in clean code and testable architecture.

Responsibilities

• Maintain and evolve backend services in real production systems.
• Ensure high code quality through testing practices.
• Take ownership of features and initiatives from design to monitoring.
• Participate in support duty rotation for service reliability.

Skills

Backend Engineering

Java

Kotlin

RDBMS knowledge

Distributed systems

Cloud knowledge

REST APIs

Clean code practices

Monitoring tools

Debugging skills

Tools

Spring Boot

JUnit

Redis

Grafana

AWS

Docker

Job description

Hello! We're Teya.

Teya is a payment and software service provider, headquartered in London serving small, local businesses across Europe. Founded in 2019, we build easy to use, integrated tools that enable our members to accept payments and boost business performance.

At Teya we believe small, local businesses are the lifeblood of our communities.

We’re here because we don’t believe there’s a level playing field that gives small businesses with a fighting chance against the giants of the high street.

We’re here because we see banks and legacy service providers making things harder for them. We don’t think the best technology or the best service should be reserved for those with the biggest headquarters.

We’re here to fight for a future where small, local businesses can thrive, and to commit the same dedication they offer all of us.

Become a part of our story.

We’re looking for exceptional talent to join our mission. We offer a chance to create impact in a high-energy and connected culture, while benefiting from continuous learning opportunities, a supportive community which is proud to serve our mission, and comprehensive benefits.

Your Mission

Loyverse are hiring Backend Engineer to work on mission-critical backend services that power our POS ecosystem — APIs, dataservers, billing, and integrations. The role involves maintaining and extending existing systems, building new features, improving observability, and taking part in support duty.

We are looking for engineers with proven production experience, who can take ownership of initiatives, drive end-to-end development, communicate effectively with cross-functional teams, write clean, testable code, and thrive in a continuous delivery, fast-paced release cycle environment.

Responsibilities

• Maintain and evolve backend services (Spring Boot, Netty) in real production systems.
• Ensure high code quality through clean code practices, unit testing, and integration testing (JUnit, Testcontainers).
• Take ownership of features and initiatives — from design through development, testing, deployment, and monitoring.
• Participate in support duty rotation to keep services reliable.
• Improve observability & monitoring (metrics, tracing, logging) for faster incident response.
• Drive cross-team communication to align development with product and operations.
• Contribute to continuous delivery pipelines and ensure smooth weekly releases.

Your Story

• At least 5+ years of Backend Engineering experience
• Proven hands-on experience (3+ years) in production systems with Java or Kotlin (we are a Kotlin-first team).
• Strong debugging, problem-solving, and communication skills.
• Strong knowledge of RDBMS (Aurora MySQL 8) — transactions, indexing, query optimization.
• Expertise in clean code, testable architecture, and continuous delivery.
• Solid experience with distributed systems (Redis, Memcached, SQS).
• Familiarity with fast-paced release cycles and agile environments.
• Monitoring experience with tools like Grafana, New Relic, CloudWatch.
• Cloud knowledge: AWS services (ECS, S3, CloudWatch).
• Experience designing and consuming REST APIs and familiarity with OAuth2 flows.
• Fluent in English.

Nice to have:

• Experience with NoSQL (MongoDB or similar).
• Familiarity with CQRS / event-driven architectures.
• Knowledge of containerized deployments (Docker, ECS, Kubernetes).
• Experience with support duty / on-call rotations.

Teya is proud to be an equal opportunity employer.

We are committed to creating an inclusive environment where everyone regardless of race, ethnicity, gender identity or expression, sexual orientation, age, disability, religion, or background can thrive and do their best work. We believe that a diverse team leads to better ideas, stronger outcomes, and a more supportive workplace for all.

If you require any reasonable adjustments at any stage of the recruitment process whether for interviews, assessments, or other parts of the application—we encourage you to let us know. We are committed to ensuring that every candidate has a fair and accessible experience with us.