Senior Engineer, Growth

Taptap Send; Greater London; On-site; GBP 80,000 - 110,000; Full time

Job summary

Taptap Send in London is seeking a Senior Engineer to lead the development of our consumer‑facing product, building scalable backend features with Kotlin and Spring, and collaborating closely with Product, Operations, Customer Support and Growth to ship reliable, intuitive experiences.

This is an early‑team role on a cross‑platform stack (React Native/TypeScript frontend, Kotlin backend, PostgreSQL, AWS, Terraform and Ansible).

Qualifications

• 5+ years of professional experience building consumer facing applications.
• Experience owning user-facing features end-to-end, from conception to launch.
• Experience developing software in a collaborative, fast-paced environment.
• Proficiency with Kotlin, Java or similar backend language.
• Experience with systems that require performance and reliability.

Responsibilities

• Take ownership of development of mobile application products.
• Build features in Kotlin and Spring.
• Write well-tested, high quality code, with an eye towards generics and re-use.
• Work closely with design and product teams to regularly ship working features.
• Participate in release planning and deployment of released build.
• Mentor and advise team members.
• Evaluate and deliver timeline estimates for projects.

Skills

Kotlin

Java

Backend development

Code quality

Tools

AWS

Terraform

Ansible

PostgreSQL

Job description

About Us

We’re building the world’s leading cross-border fintech for emerging markets - empowering families, fueling local economies, and changing how millions access financial services.

Since our launch in 2019, we have transformed how money moves across borders with our operations spanning 6 out of 7 continents and covering both the busiest and most underserved (remittance) corridors. We tapped into a massive shift - from banks to phones - bringing digital finance to places where traditional systems never reached. The next stage of growth will fuel a network of services and products especially designed to make money more accessible to diaspora communities including local cards, and additional savings and payments features.

We’re growing fast, backed by world-class investors, and scaling a product that blends real world impact with cutting edge fintech innovation.

Here’s a little more:

• Founded by Harvard grads and 3-time founders who previously built Segovia (acquired) and GiveDirectly (>$300M revenue, fastest-growing NGO in the world)
• Backed by top investors including Spark Capital, Canaan, Reid Hoffman, Breyer Capital, Unbound, Wamda, and more
• Built by global top performers from Bain, Google, McKinsey, Uber, Checkout, Bolt, and beyond - we move fast, stay humble, and care deeply about our mission
• Truly global team - 250+ people, 50+ nationalities, 50+ languages
• Guided by our values - ownership, impact, humility, and heart - in deed, not just word

The Role

We are looking for a Senior Engineer to join our growing engineering team to define, build and iterate on features for our consumer-facing product. You will work closely with Product, Operations, Customer Support, Growth and other functions to design and build a reliable, intuitive, and simple experience for our users. As an early member of the team, we hope you will also have a lot of impact on our team culture, processes and norms.

Taptap Send is a cross-platform mobile app developed with React Native and TypeScript, which talks to a backend service written in Kotlin and backed by a PostgreSQL database, all of which runs on AWS and is managed via Terraform and Ansible. This is a backend-focused role, but you will have plenty of opportunities to work on all parts of our tech stack.

Your Responsibilities

• Take ownership of development of mobile application products
• Build features in Kotlin and Spring
• Write well-tested, high quality code, with an eye towards generics and re-use
• Work closely with design and product teams to regularly ship working features
• Participate in release planning and deployment of released build
• Mentor and advise team members
• Evaluate and deliver timeline estimates for projects

Requirements

• 5+ years of professional experience building consumer facing applications
• Experience owning user-facing features end-to-end, from conception to launch
• Experience developing software in a collaborative, multi-functional, and fast-paced environment
• Proficiency with Kotlin, Java or similar backend language
• Experience working on systems that have real-world performance and reliability constraints
• Strong communication and ability to manage conflicting priorities, setting expectations with stakeholders and be a driving force

Ideally

• Experience working on a multi-platform mobile app with a significant volume of traffic
• High personal code/development standards (code review, unit testing, documentation, etc.)

Taptap Values

Impact first

Team next

Accept reality

Propose solutions

Win with grit

Be proactively candid, with yourself and others

Love the particular

Own it

Create positive energy

Maybe, even have fun

Taptap Send is an equal opportunity employer dedicated to building an inclusive and diverse workforce. All employment decisions are decided on the basis of qualifications, experience and business need. We strongly encourage applications who are members of underrepresented communities to apply.

If you require reasonable adjustments to be made during the recruitment process, please do not hesitate to let us know. Any information you provide us in this respect will only be used to accommodate your requirements.

Note: we recognize imposter syndrome is real - any candidate that does not perfectly fit every characteristic of this role is still strongly encouraged to apply.