Technical Lead (Payment)

職務概要

We’re looking for a Tech Lead who can elevate our engineering team from strong to exceptional. You will drive technical excellence, lead the adoption of AI across engineering workflows and products, mentor and grow our developers, and help build a high-performance engineering culture. Working closely with product, design, and leadership teams across Vietnam and the US, you will align technical execution with business goals and ensure the team delivers impactful solutions with speed, quality, and scalability. WHAT YOU'LL LEAD You will set technical direction across 2 of Everfit's highest-priority initiatives - Payments: Own the technical direction for billing infrastructure: subscription lifecycle, payment gateways (Stripe and beyond), webhook reliability, and financial reconciliation at scale. Guide the squad through multi-currency, cross-border flows, and marketplace payout systems while maintaining financial data integrity - Marketplace: Drive backend architecture for discovery, listing management, search/ranking, and transactional flows. Design two-sided systems that scale from thousands to millions of users, covering matching, availability, dynamic pricing, and booking state, with seamless Payments integration Your impact Technical Direction & Architecture - Own the architectural patterns and technical standards for Payment's backend systems — workout programming engines, scheduling logic, nutrition tracking, multi-tenant platform infrastructure, notification pipelines, and third-party integrations - Drive solution design for complex features: new product areas, cross-squad integrations, platform-level changes, and performance-critical systems - Make architectural decisions that balance delivery velocity with long-term maintainability - Define and uphold engineering standards across squads: API design, data modeling, testing practices, code review - culture, and documentation - Proactively identify and lead reduction of technical debt in coordination with Engineering Management and Product Hands-on Engineering - Stay in the code on the most critical work — Payment platform infrastructure, high-risk migrations, cross-squad technical foundations, and architectural proof-of-concepts - Review pull requests across sub-squads with depth and speed, giving feedback that helps engineers grow — not just ships - Set the standard for what good code looks like across squads: observable, testable, maintainable, and scalable AI-First Engineering - Champion AI-assisted development across squads — from code generation and test writing to automated documentation and PR reviews - Collaborate with the AI squad on integrating AI features directly into workflows: smart programming suggestions, automated progress summaries, AI-powered onboarding - Help engineers build practical AI fluency through pairing, demos, and shared tooling workflows Mentorship & Team Growth - Mentor and coach engineers across squads — raising the technical bar through code reviews, architectural guidance, and technical pairing - Run regular technical discussions and design reviews that help engineers grow as system thinkers, not just feature builders - Contribute to hiring across Payment and Marketplace: design technical assessments and conduct engineering interviews calibrated to the Marketplace and Payment domain Cross-functional Collaboration - Be the primary technical voice in product discovery across Payment — shaping what's feasible, what's scalable, and - what will cause pain six months from now - Partner closely with PMs, BAs, QA Lead, and Design to ensure technical decisions translate cleanly into user-facing product quality - Align with Tech Leads in other squads (Marketplace, Payment, AI) on shared infrastructure, platform standards, and cross-squad integrations - Represent Payment Engineering in cross-functional leadership discussions, communicating system decisions with clarity to non-technical stakeholders