Senior Frontend Engineer

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:

We are seeking a highly skilled and passionate Senior Frontend Engineer to join our growing team, with a specialized focus on developing and enhancing our critical back-office applications. In this pivotal role, you'll design, develop, and maintain cutting-edge user interfaces that empower our team of 100 customer agents to efficiently support a vast network of over 800,000 merchants. Your work will directly streamline agent workflows, improve data accessibility, and contribute significantly to our operational efficiency and merchant satisfaction. You'll translate complex business requirements into intuitive, high-performance, and scalable user experiences, collaborating closely with product managers, UX/UI designers, and backend engineers. Your expertise will be instrumental in shaping the future of our internal tools and ensuring a seamless, productive environment for our support teams.

Key Responsibilities:

• Lead the design, development, and implementation of highly responsive and scalable web applications using React, Next.js, and a strong emphasis on TypeScript.

• Collaborate deeply with product and design teams to understand the unique needs of our customer agents and translate complex operational workflows into intuitive and efficient user interfaces.

• Develop robust, data-intensive UIs that handle large datasets and complex business logic, ensuring high performance and responsiveness for our internal users, leveraging TypeScript for robust type checking and improved code quality.

• Write clean, maintainable, and efficient code, ensuring high performance and reliability of mission-critical internal applications, with a focus on type-safe development practices.

• Actively participate in code reviews, providing constructive feedback to peers and mentoring junior engineers, particularly on effective TypeScript usage and best practices in the context of large-scale internal tools.

• Identify and address performance bottlenecks and bugs, ensuring a smooth and uninterrupted experience for our customer agents.

• Contribute to the ongoing improvement of our frontend development practices, tooling, and standards, with an emphasis on internal system development and type safety.

• Stay up-to-date with the latest frontend technologies, trends, and best practices, applying them to enhance our back-office platforms.

Your Story:

• 5+ years of professional experience in frontend development.

• Expert-level proficiency in TypeScript, including advanced type manipulation, generics, and understanding of complex type inference.

• Strong proficiency in React.js and its core principles, developed with a type-safe approach.

• Extensive experience with Next.js for server-side rendering, static site generation, and API routes, with a focus on TypeScript integration.

• Solid understanding of modern JavaScript (ES6+), HTML5, and CSS3.

• Experience with state management libraries (e.g., Redux, Context API, Zustand) in a TypeScript environment.

• Familiarity with consuming RESTful APIs, with an understanding of how to define and use types for API responses.

• Strong understanding of web performance optimization techniques.

• Experience with version control systems (e.g., Git).

• Excellent problem-solving skills and attention to detail.

• Strong communication and collaboration abilities, especially when working with internal stakeholders.

Optional Tech Skills (Nice to Have):

• Experience with GraphQL and related client libraries (e.g., Apollo Client), specifically type-safe GraphQL client usage.

• Proficiency with UI component libraries such as Material UI or Chakra UI, with experience leveraging their TypeScript definitions.

Differentiators (What Sets You Apart):

• Significant experience in working with back-office applications: Proven track record of developing complex, data-intensive interfaces for internal tools or administrative systems, understanding the unique challenges of such environments, including user provisioning, audit trails, and data integrity, all developed with strong type discipline.

• Experience in using AI Code Generators on development: Practical experience leveraging AI-powered coding tools (e.g., GitHub Copilot, Tabnine) to enhance productivity, accelerate development, and maintain code quality in a large-scale application context, ensuring type correctness in generated code.

• Experience in automating page creation and understanding how no-code tools are created: Demonstrated ability to implement solutions that automate UI generation or have a strong conceptual understanding of the underlying principles and architectures behind no-code/low-code platforms, particularly for internal tool development, with an eye towards type-safe configuration and extensibility.

Why Join Us:

• Opportunity to work on highly impactful projects that directly enhance the productivity of 100 customer agents supporting thousand of merchants, within a robust and type-safe codebase.

• Be at the forefront of building mission-critical internal tools that drive operational excellence, utilizing the full power of TypeScript.

• Collaborative and supportive team environment with a focus on solving complex business problems.

• Focus on continuous learning and professional development, with opportunities to explore cutting-edge technologies.

• Competitive salary and benefits package.

The Perks

• We trust you, so we offer flexible working hours, as long it suits both you and your team;

• Health Insurance;

• Meal Allowance;

• 25 days of Annual leave (+ Bank holidays);

• Public Transportation Card;

• Frequent team events & activities in the office and outside;

• Office snacks every day;

• Friendly, comfortable and informal office environment.

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.