Senior Engineer, Payout Network

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, and build out our backend third party integration systems as we scale. For us, this isn’t just about technical performance, but also supporting the internal human processes that will always power much of our product. You will work closely with Product, Operations, Customer Support, Growth and other functions to design and build out a reliable, performant, and secure platform for handling remittances across countries. 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 across the stack to bring Taptap Send's industry-leading product to new countries.. We’re an encouraging environment that values both teamwork and autonomy, and have many exciting upcoming challenges, including: scaling up to handle increased volume and complexity, helping our analysts derive business and product insights to drive growth and retention, building internal tools for our customer support and acquisition efforts, and much more! Your Responsibilities: - Build out unified interface encapsulating dozens of third party payment integrations - Work on one of the pillar revenue centers of the organization - Take ownership of backend system architecture and implementation - Build performant and resilient data flows; keeping security in mind during every step - Work closely with product team to regularly ship working features - Work in an iterative fashion - Evaluate and deliver timeline estimates Requirements: - 7+ years of professional experience building backend systems - Proficiency with Kotlin or Java / JVM - Proficiency with PostgreSQL - Experience with AWS: S3, SQS, SNS, Lambda, etc. - Experience implementing and managing elaborate integrations with third-party APIs - Experience working on systems that have real-world performance and reliability constraints - Experience developing software in a collaborative, multi-functional, and fast-paced environment - Strong communication and ability to manage conflicting priorities, setting expectations with stakeholders and be a driving force Ideally: - Experience working with Infrastructure as…