Senior Backend Engineer (Golang)

Overview

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

As a Senior Software Engineer at Teya, you will play a crucial role in shaping the future of Teya's technology, driving innovation, and ensuring we deliver a seamless, high-performance experience for our merchants across Europe. You will work with diverse, cross-functional teams to design, develop, and maintain core components of our platform that power various aspects of our business, with a particular focus on merchant data, subscriptions, and lifecycle management. As part of a platform team, you will build and evolve APIs and event-driven services that are consumed by many other product teams across Teya, ensuring reliability, performance, and ease of integration at scale. Your contributions will directly impact our merchants’ success, enabling them to thrive in an increasingly competitive landscape.

As a Senior Software Engineer at Teya, you will be expected to:

• Design, develop, and maintain clean, efficient, secure, and well-tested code to support critical business needs, ensuring scalability, performance, and reliability across Teya's systems.
• Take ownership of features and projects throughout the full software development lifecycle, including scoping, design, development, testing, deployment, and maintenance.
• Collaborate closely with cross-functional teams (including product, design, data science, security, and operations) to understand requirements, provide technical insights, and contribute to architecture discussions.
• Build tools and integrate systems to enhance operational efficiency, reliability, and scalability of products across the business.
• Design, evolve, and maintain clear, well-versioned APIs (REST and/or gRPC) that are easy for other teams to consume, with strong focus on backwards compatibility and developer experience.
• Build and operate event-driven and asynchronous workflows (for example using queues, streams, or webhooks), ensuring idempotency, ordering guarantees where needed, and robust failure handling.
• Work comfortably with cloud-native infrastructure (AWS, Kubernetes) and infrastructure as code (Terraform, Helm), collaborating with platform teams to ensure services are observable, secure, and easy to operate.
• Partner with other engineering teams that consume GMD’s services, gathering feedback and translating it into platform capabilities that unblock and accelerate their roadmaps.
• Contribute to process improvements, focusing on continuous integration, delivery, and deployment to ensure a smooth and stable development pipeline.
• Participate in code reviews, share feedback constructively, and help elevate the overall quality and performance of the team’s output.
• Mentor and support fellow developers, fostering a collaborative and innovative environment.
• Stay updated with the latest trends and technologies in software engineering, payments, and fintech, proactively identifying opportunities for improvement and innovation.
• Assist in troubleshooting complex issues related to our systems, providing timely resolutions to ensure uninterrupted service for our customers.
• Help define and promote best practices in software development, including code quality, testing, automation, and security.
• Serve as a subject matter expert in key areas, providing guidance and support to other teams.

Your Story

• 5+ years of professional software development experience, with a solid understanding of backend systems, scalable architectures, and software design principles.
• Experience working in platform or shared-services teams, building capabilities that are used by many other engineering teams, and balancing flexibility, stability, and consistency.
• Significant coding skills in Golang as your main backend language, with production experience designing and maintaining services in Go. Experience with Java or Kotlin is a strong plus; if your background is primarily in Java/Kotlin, you should be ready to gain deep Golang expertise while working with us.
• Strong knowledge of object-oriented programming (OOP) principles, data structures, and algorithms.
• Proven ability to design and implement efficient, maintainable, and scalable solutions using backend technologies.
• Experience working with databases (relational and non-relational), including schema design, query optimization, and database integration.
• Experience with system design and architecture, including object-oriented design patterns, microservices architecture, and API development.
• Strong experience designing and implementing HTTP/REST (and/or gRPC) APIs, including pagination, error handling, authentication/authorisation, and versioning.
• Proven experience building high-throughput, low-latency backend services, including performance optimisation, observability, and troubleshooting in production.
• Experience designing and building event-driven systems (for example using message brokers, streams, or webhooks), including asynchronous workflows, retries, and idempotent processing.
• Hands-on experience with version control (Git), continuous integration, and deployment pipelines.
• Comfortable working with cloud infrastructure and infrastructure as code, ideally using AWS, Kubernetes, Terraform, and Helm, or similar technologies.
• Strong problem-solving skills and the ability to debug complex issues across multiple systems or services.
• Excellent communication, collaboration, and mentoring skills.
• Experience working in an Agile/Scrum development process.
• Ability to work well as part of a team and independently in a fast-paced environment.
• Fluent in English.

Nice to have

• Degree in computer sciences, programming, or a related field.
• Previous experience in the Payments Industry, fintech, or Location and Business Recommendation Services platforms.
• Experience with data modelling and data quality in customer or merchant domains, including handling data migrations and ensuring consistency across distributed systems.
• Experience building or operating multi-tenant, API-first platforms where many internal or external clients integrate with your services.
• Experience implementing authorisation Systems (example: RBAC, ABAC, SpiceDB).
• Knowledge of cryptography or EMV.

The Perks

• We trust you, so we offer flexible working hours, as long it suits both you and your team;
• Physical and mental health support through our partnership with GymPass giving free access to over 1,500 gyms in the UK, 1-1 therapy, meditation sessions, digital fitness and nutrition apps;
• Our company offers extended and improved maternity and paternity leave choices, giving employees more flexibility and support;
• Cycle-to-Work Scheme;
• Health and Life Insurance;
• Pension Scheme;
• 25 days of Annual Leave (+ Bank Holidays);
• Office snacks every day;
• Friendly, comfortable and informal office environment in Central London.

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.