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Frontend specialist with deep expertise in Angular, TypeScript, and modern web technologies. A decade of experience building scalable applications for identity verification, membership platforms, and fintech clients across early-stage startups and global enterprises. Remote-first developer who excels at performance optimization, code quality, and translating complex requirements into production-ready solutions.…Frontend specialist with deep expertise in Angular, TypeScript, and modern web technologies. A decade of experience building scalable applications for identity verification, membership platforms, and fintech clients across early-stage startups and global enterprises. Remote-first developer who excels at performance optimization, code quality, and translating complex requirements into production-ready solutions.

SOFIA MARTINS

Front-End Developer, Full Stack Developer, Web Developer, +1

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Frontend specialist with deep expertise in Angular, TypeScript, and modern web technologies. A decade of experience building scalable applications for identity verification, membership platforms, and fintech clients across early-stage startups and global enterprises. Remote-first developer who excels at performance optimization, code quality, and translating complex requirements into production-ready solutions.…Frontend specialist with deep expertise in Angular, TypeScript, and modern web technologies. A decade of experience building scalable applications for identity verification, membership platforms, and fintech clients across early-stage startups and global enterprises. Remote-first developer who excels at performance optimization, code quality, and translating complex requirements into production-ready solutions.

Available to hire

Frontend specialist with deep expertise in Angular, TypeScript, and modern web technologies. A decade of experience building scalable applications for identity verification, membership platforms, and fintech clients across early-stage startups and global enterprises. Remote-first developer who excels at performance optimization, code quality, and translating complex requirements into production-ready solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Portuguese

Fluent

English

Advanced

Work Experience

Frontend Developer at Jumio Corporation

May 1, 2025 - May 1, 2025

Architected and delivered 50+ enterprise features on the core product team (9 members). Improved application performance by 40% via lazy loading, code splitting, OnPush change detection, and core web vitals monitoring. Led deployment workflow enhancements in Jenkins and reliability improvements. Conducted 500+ code reviews, established TypeScript strict mode, and implemented Cypress and Playwright testing strategies. Collaborated with cross‑functional teams across time zones to support hundreds of enterprise clients in finance, gaming, and travel. Integrated AWS S3 and CloudFront for optimized content delivery.

Full-Stack Developer at VeryConnect

February 1, 2020 - February 1, 2020

Built a full-stack membership platform from the ground up as a key member of a 10-person startup team using Node.js, Angular, and MongoDB to serve 100+ organizations across 25+ countries. Delivered 20+ major features end-to-end (profiles, privacy, payments with Stripe, event management, content publishing). Automated invoice generation reducing admin workload by 80% and processing hundreds of invoices monthly. Provided direct customer support (600+ inquiries) and helped shape the product roadmap.

Software Engineer at Bliss Applications

June 1, 2017 - June 1, 2017

Delivered 5 client projects end-to-end for banking, fintech, and retail clients. Built RESTful APIs with PostgreSQL and MongoDB, and managed AWS infrastructure. Created responsive admin dashboards using AngularJS, React, and Bootstrap to enable non-technical users to manage complex operations.

Product Developer at Tekever

December 1, 2015 - December 1, 2015

Developed Windows Phone interpreter for a visual app-building platform, enabling cross-platform mobile application creation from diagram-based specifications.

Frontend Developer at Jumio Corporation

February 1, 2020 - May 1, 2025

Identity verification platform serving enterprises globally; Architected and delivered 50+ enterprise features on core product team; Improved application performance by 40% through lazy loading, code splitting, OnPush rendering, and core web-vitals monitoring; Led code quality initiatives with 500+ reviews and testing strategies (Cypress/Playwright); Collaborated across time zones to support 200+ countries and 1+ billion transactions; Integrated AWS S3 and CloudFront for optimized content delivery.

Full-Stack Developer at VeryConnect

September 1, 2017 - February 1, 2020

Built full-stack membership platform from the ground up using Node.js, Angular, and MongoDB; Delivered 20+ major features; Automated invoicing system reducing admin workload by 80%; Provided direct customer support and helped shape product roadmap.

Software Engineer at Bliss Applications

December 1, 2015 - June 1, 2017

Delivered 5 client projects end-to-end; Built RESTful APIs with PostgreSQL and MongoDB; Managed AWS infrastructure; Built responsive admin dashboards across AngularJS/React; Gained full-stack experience across frontend, backend, databases, and DevOps.