Romain Lancia

At Espace Aubade, one of France’s leading bathroom and home renovation retailers, I led the front-end development of a custom back-office application designed to streamline and digitize the entire applicant and hiring process for the company’s HR and recruitment team. This tool replaced fragmented workflows and spreadsheets, improving visibility, speed, and control over the candidate pipeline across dozens of locations nationwide. ✔ Designed and built a Kanban-style interface (inspired by Jira/Trello) to manage and monitor each stage of the application lifecycle — from application received, to interviews, to hiring decisions ✔ Reduced average processing time per applicant by ~50% through real-time filtering, status tracking, and notification logic ✔ Implemented custom role-based access control for HR managers and local store directors ✔ Developed the app using React + TypeScript + React Query, with a performant and modular architecture ✔ Built drag-and-drop workflows, live updates, and a responsive UI using Tailwind CSS and React DnD ✔ Integrated REST APIs with optimistic UI updates for smooth state transitions ✔ Delivered MVP in under 6 weeks, now actively used across 200+ store branches ✔ Customized authentication pages using Keycloak with FTL templating to provide a branded and seamless login experience ✔ Set up a complete developer environment with ESLint, Prettier, Husky, and Jest tests for critical flows ✔ Wrote internal documentation for onboarding new developers and HR users Impact Highlights: 📉 Cut manual applicant tracking effort by 60% 📈 Improved time-to-hire by ~30% in the first quarter of deployment 👥 Enabled multi-user collaboration across HR and store teams in real time

At Saqara, I played a key role in modernizing and scaling a complex B2B SaaS platform used by leading construction firms, including Nexity, one of France’s largest real estate and development groups. I led core front-end initiatives that significantly improved developer velocity, product maintainability, and application performance across several strategic projects. Core Platform Modernization called AOS : A comprehensive upgrade of a legacy construction management platform, used daily by contractors, architects, and developers to manage job sites, track project progress, and collaborate with professionals. Key Achievements: ✔ Authored a 30-page technical audit & upgrade roadmap, aligning stakeholders and securing modernization buy-in ✔ Led migration to Next.js 14 with server components, improving page load time by ~35% and enabling SEO-ready routing ✔ Refactored 100+ components from class-based to hooks-based architecture for performance and maintainability ✔ Eliminated legacy dependencies: replaced Redux + RxJS with React Query, reducing bundle size and cognitive overhead ✔ Integrated TypeScript across the codebase and enforced strict typing standards ✔ Migrated all forms to React Hook Form, improving UX consistency and validation performance ✔ Customized authentication pages using Keycloak with FTL templating to provide a branded and seamless login experience ✔ Set up an internal ADR (Architecture Decision Record) system and clean developer workspace with ESLint, Prettier, and Husky ✔ Wrote detailed documentation and test suites (Jest, RTL) covering key user flows Impact: 🚀 Reduced initial load time by ~40% 🧪 Achieved 85%+ test coverage 📈 Improved Lighthouse performance scores across key product pages

Project 1 : The client aimed to extract structured insights (speaker identity, meeting context, summaries) from video calls using AI. I led the design and delivery of a fully serverless, scalable architecture to ingest, process, and transform video/audio into datasets for voice recognition model training. Achievements: ✔ Designed and deployed a 100% serverless pipeline using AWS (Lambda, S3, Step Functions, API Gateway) — eliminating infrastructure overhead and reducing operational costs by ~60% ✔ Automated extraction of audio features and metadata from video using FFmpeg pipelines triggered via S3 events ✔ Engineered a data labeling workflow that enabled the team to generate clean speaker-tagged datasets from hours of raw footage ✔ Set up a CI/CD pipeline with GitHub Actions to streamline deployments and manage Lambda versioning ✔ Delivered a functional PoC in under 3 weeks, enabling the AI team to begin training with real-world video inputs ✔ Ensured full observability with CloudWatch logs, alerts, and dashboards to monitor system health and event flow Project 2 : The client want to migrate all his infrastructure on AWS. I led full infrastructure migration to AWS, including Redis, front-end, back-end, and database systems. Added full observability and operational resilience. Achievements: ✔ Migrated core services to AWS EKS with load balancing and auto-scaling ✔ Built versioning and dev environments using Terraform ✔ Set up Prometheus & Grafana for monitoring and created an automated alert system via email for CPU overloads ✔ Authored full technical documentation

As a consultant at TrackIT, I worked at Fashion Nova, one of the world’s leading fashion e-commerce brands, I was responsible for maintaining, shipping new features and optimizing performant, modern storefront features using Shopify’s Hydrogen framework — a React-based solution designed for headless commerce. Working within a fast-paced, high-traffic environment (serving millions of users), I focused on scalability, speed, and rich user experiences that directly impacted conversion and engagement. Key Achievements: ✔ Developed dynamic, server-rendered components using Hydrogen, optimizing for SEO and page speed ✔ Built and maintained custom product detail pages, collections, and search flows, resulting in faster load times and improved conversion ✔ Integrated Shopify Storefront API and cart functionality using GraphQL queries and mutations ✔ Delivered personalized shopping experiences using React context/state, tailored per user session ✔ Implemented code-splitting, lazy loading, and critical rendering path optimizations, improving Time to Interactive (TTI) across key landing pages ✔ Contributed to a modular design system using Tailwind CSS, ensuring rapid UI prototyping and consistent brand styling ✔ Worked closely with designers and backend developers to ship features to millions of daily active users

As a consultant at TrackIT, I worked with FuseMedia which needed a custom internal tool to manage video content. I developed a back-office application enabling editors to visually navigate, annotate, and manage time markers on long-form video content, improving editorial workflow speed and accuracy. Achievements: ✔ Built the full app from scratch using Next.js, with clean modular architecture and reusable components ✔ Reduced editorial video tagging time by ~40% by enabling real-time navigation and contextual commenting ✔ Created a custom video player wrapper supporting dynamic overlays, time-based interactions, and keyboard shortcuts ✔ Maintained 90%+ test coverage with unit and component tests (Jest + React Testing Library) for robust quality assurance ✔ Set up the complete front-end developer environment with ESLint, Prettier, and Typescript, enabling rapid iteration and better team onboarding

As a consultant at TrackIT, I worked on two key projects for Scality: one focused on enhancing the reliability and test coverage of a cloud storage front end (Google Drive-style), and the other on building a monitoring dashboard for server metrics from the ground up. - Project 1: Zenko Scality’s storage platform needed front-end test automation to ensure long-term maintainability and scalability. I was brought in to write comprehensive tests across a large existing codebase and increase confidence in future releases. Achievements: ✔ Reached 85%+ unit and component test coverage using Jest, Enzyme, and React Testing Library ✔ Wrote E2E test suites in Cypress, covering key user flows and file operations ✔ Refactored legacy components to improve testability and maintainability ✔ Helped stabilize CI pipelines by reducing flaky test execution by 30% ✔ Tech stack: React, Redux, Redux-thunk, TypeScript, Jest, Cypress, Enzyme - Project 2: Server Metrics Monitoring Dashboard Built a back-office monitoring tool from scratch to allow internal teams to visualize real-time server health and performance metrics. Achievements: ✔ Designed and developed the full UI using Next.js + TypeScript, with reusable components and modular architecture ✔ Integrated live data visualizations using charts and dynamic filtering components ✔ Wrote robust unit/component tests to maintain 90%+ code coverage ✔ Set up a developer workspace with ESLint, Prettier, and custom CLI tooling, accelerating onboarding and standardizing code quality ✔ Delivered MVP within 6 weeks, enabling internal teams to monitor clusters with real-time metrics

Grandpal is a care-tech platform improving the lives of elderly individuals through meaningful social engagement, used by care facilities, families, and volunteers. As front-end developer in a squad of two, I delivered and maintained multiple production-ready applications used by over 5,000 users across 30+ nursing homes in Ireland. I was responsible for the entire front-end stack and shipped new features daily, balancing speed and quality in a fast-paced, mission-driven environment. Key contributions: Developed and maintained 3 core dashboards: • Nursing Home Back Office – used by staff to manage residents and activities • Family Dashboard – providing real-time updates to families • Volunteer Portal – enabling activity sign-ups and coordination Built the entire UI layer with React, Next.js, and integrated accessible design standards. I also built a mobile version in Flutter. Contributed to the product’s successful rollout in multiple facilities, helping digitize workflows and improve care engagement. Working within a Techstars incubated startup, I played a key role in scaling the platform, enabling thousands of intergenerational interactions that improved quality of life for elderly residents.