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Joachim Tranvag

@joachimtranvag

Message

Staff-level software engineer building enterprise fintech systems across mobile, web, and microservices.

Spain

Message

What I'm looking for

I’m looking for a software engineering role where I can shape architecture, build enterprise fintech systems, mentor teams, and improve delivery with automation/AI—while working across mobile, web, and microservices in regulated environments.

I’m a software engineer and problem solver at heart, building enterprise-grade solutions in regulated environments like fintech. I bring language-agnostic expertise across cross-platform mobile, web clients, and backend microservices.

At Hard Rock Digital, I led a modular rewrite for payment providers in the mobile app, integrating SDKs and building custom bridges between Swift, Java, Objective C, and React Native. I also architected and updated onboarding and KYC flows across mobile and web, integrating new KYC providers and increasing successful signups by 2%.

I act as a chapter lead for 13 junior and senior engineers, mentoring and raising engineering standards while supporting interviewing and resource planning. I bridge clients and backend services (Spring Boot) by defining API contracts, and I’ve integrated AI into our workflow—defining Claude guidelines and adding a PR review bot in CI (GitHub Actions)—reducing PR cycle time by 2 hours.

Previously, at Fiinu and Ziglu, I worked across the stack on microservices and React Native, integrating embedded/open banking and KYC, and delivering a Go GraphQL service that replaced gRPC for the mobile client. Earlier, at Kodal, I led React Native delivery end-to-end (including IoT-style Bluetooth/GPS streaming with WebSockets) and supported high-traffic Magento eCommerce performance with monitoring and tuning.

Experience

Work history, roles, and key accomplishments

Current

Staff Software Engineer

Current

Hard Rock Digital

Oct 2023 - Present (2 years 5 months)

Led a modular rewrite of all payment providers in the mobile app, integrating multiple third-party SDKs via custom native bridges. Architected onboarding and KYC updates across mobile and web, improving successful signups by 2% and reducing PR cycle time by 2 hours through AI-assisted CI reviews.

React Native Native Mobile Bridging Swift Objective C Java LaunchDarkly A B Testing Spring Boot Claude

Senior Software Engineer

Fiinu Ltd

Apr 2023 - Oct 2023 (6 months)

Worked across microservices and mobile, contributing to Node.js services and owning development of the React Native app. Implemented Embedded Banking, Open Banking, KYC, and credit risk scoring integrations to support regulated fintech workflows.

Node.Js Amazon ECS React Native Embedded Banking (Tuum)Open Banking (TrueLayer)KYC API Integration Microservices NodeJS

Full Stack Engineer

Ziglu Ltd

Jul 2022 - Mar 2023 (8 months)

Architected and implemented a Robinhood-themed React Native experience ahead of an announced acquisition. Set up automated E2E testing in CI/CD and built fintech back-office capabilities spanning React.js and Go, including an API gateway redesign that replaced gRPC with Go GraphQL for the mobile client.

React Native React Go GraphQL Apollo Client API Gateway Appium BrowserStack

Senior Web and Mobile Developer

Kodal

Mar 2020 - Jun 2022 (2 years 3 months)

Led development of a React Native application from inception to release and delivered Pawtrack, including real-time GPS/Bluetooth tracking backed by IoT streaming to a server. Built and tuned high-traffic eCommerce capabilities using Magento and React.js, including performance monitoring and scaling for load-intensive periods.

React Native GPS Bluetooth IoT Data WebSockets Pusher Laravel DynamoDB Magento React Varnish

Web and Digital Systems Developer

Velobrands

Aug 2018 - Feb 2020 (1 year 6 months)

Developed custom eCommerce themes, plugins, and end-to-end integrations across multiple websites. Built and maintained server-side systems and front-end features using PHP/Magento/CodeIgniter and a range of JavaScript frameworks, supporting reliable commerce operations.

PHP Magento CodeIgniter Apache Nginx MariaDB jQuery Backbone.Js

Onshore Team Developer Role

Teekay

Jan 2012 - Dec 2016 (4 years 11 months)

Developed and maintained a planning tool to manage offshore rotas and operations for a fleet of FPSOs. Supported day-to-day usage and ongoing maintenance for the operations planning workflow.

Offshore Rota Planning Workforce Scheduling FPSO Operations Operations Support Software Maintenance Requirements Gathering Reporting