Romain Masclef

– Lead all technical strategy, architecture and engineering efforts. – My role covers both high-level product vision and hands-on implementation across backend, crypto/Web3 integrations, infrastructure and internal tooling. – Technical leadership & architecture: – Design and maintain Trevee's global technical architecture, ensuring security, scalability, and reliability across all systems (APIs, indexers, data pipelines, frontends, blockchain integrations). – Web3 & Smart Contract integrations – Oversee all integrations with EVM chains (Sonic, Ethereum, Plasma...), RPC providers, indexers (Alchemy subgraphs, Ormilabs, Tenderly...), and blockchain data infrastructure. – Define best practices around events handling, TVL/APR computation, and on-chain/off-chain interactions. – Product & platform engineering – Supervise the development of Trevee's core products (dashboards, APIs, data services, earning strategies systems), and ensure fast iteration cycles with strong engineering practices. – Cloud & DevOps ownership – Manage infrastructure (VPS, Docker, CI/CD, monitoring, alerting, security hardening) and guarantee service reliability and cost optimisation. – Team enablement & tech processes – Define standards, code quality rules, development workflows, and contribute to building a strong engineering culture. – Strategic involvement – Collaborate closely with founders on product vision, roadmap prioritisation, and long-term technological positioning. – Stack & Domains – Go, Node/NestJS, OVH, Docker, PostgreSQL, Nginx, Traefik, Alchemy, Ormilbas, OctavAPI, SevenseasAPI, Grafana, Loki, Tenderly, Web3/EVM, RPCs, Smart contracts, Indexers, Observability.

– Contributed as a core backend developer to TF1's large-scale digital transformation, supporting multiple strategic initiatives across web, mobile (iOS/Android), and IPTV platforms (Free, SFR, Bouygues, etc.). – Took part in the complete redesign of backend services, building modular, high-performance APIs in Go to support the new generation of front-end applications and editorial tools. – Rebuilt the internal CMS from scratch in 3 months, enabling editorial teams to easily manage, schedule, and publish content across e-TF1 platforms -significantly improving productivity and autonomy. – Helped migrate infrastructure from on-premise data centers to AWS, improving scalability, resilience, and deployment flexibility; contributed to infrastructure-as-code practices. – Collaborated with cross-functional teams to align backend capabilities with editorial and product needs, enabling new features such as personalized content, live streaming, and VOD. – Designed and implemented performant, testable, and maintainable services with a focus on clean interfaces and scalability, helping support millions of monthly users. – Worked within a multi-team agile environment, actively participating in the improvement of inter-team collaboration, documentation, and delivery workflows. – Delivered new backend features with a strong emphasis on reliability and observability, contributing to a 30% reduction in incidents during peak traffic periods. – Participated in internal knowledge sharing and code review practices, helping spread Go best practices across newly formed backend squads.

– Led the modernization of ETS Global's legacy monolithic back-office CRM, transitioning to a microservices architecture using Symfony 3/4 and Domain-Driven Design to improve maintainability, scalability, and developer velocity. – Introduced an event-driven architecture for handling asynchronous workflows, leveraging RabbitMQ and SwarrotBundle, which reduced latency for background processing tasks by 40%. – Rebuilt service observability by implementing Elastic Stack (ELK) for application logs and Prometheus + Grafana for service monitoring, enabling real-time diagnostics and proactive incident handling. – Contributed to the complete revamp of the public-facing front office application, including: – Migrated from EzPublish to Prismic.io for CMS flexibility – Migrated from Symfony 2 / Twig to React to modernize the frontend stack – Implemented GraphQL server to simplify and optimize client-side data needs – Enabled internationalization for global markets using Localize.biz – Deployed services on Google Cloud Platform (AppEngine, Cloud Storage) to reduce infrastructure management overhead – Designed and maintained robust CI/CD pipelines using Jenkins and Ansible, improving deployment speed and reducing manual errors. – Configured and maintained infrastructure components on AWS, including S3, EC2, ElasticSearch Service, and Lambda, enabling flexible, cloud-native operations across dev, test, and demo environments. – Supported engineering best practices through code reviews, architectural discussions, and cross-team collaboration, contributing to faster time-to-market for new features.

– Led the development of a custom ERP system using Symfony 3 / PHP 7, following open-ERP principles to support tailored business workflows and internal operations. – Designed a scalable and maintainable system architecture, enabling modular growth and better alignment with evolving business needs. – Set up a complete CI/CD workflow using GitLab CE and Deployer, automating deployment across development, qualification, and production environments. – Provisioned and maintained infrastructure on Debian Jessie servers, including configuration of Apache, PHP packages, MySQL, and essential system services. – Improved deployment reliability and reduced manual errors, supporting continuous delivery and faster iteration cycles for internal stakeholders.

– Developed and maintained a web application and RESTful API using AngularJS and Node.js, supporting internal operations during high-traffic international football events. – Designed scalable, maintainable backend services to ensure high availability and performance, handling thousands of daily requests with minimal downtime. – Trained and mentored internal development teams on robust coding practices, including modular code structure, defensive programming, and testing strategies. – Promoted best practices in JavaScript, including linting, documentation, unit testing, and adherence to code style guides, improving long-term code quality. – Helped improve team efficiency and reduce bug rates by embedding code reviews and encouraging a culture of technical excellence and collaboration.

– Took over and maintained existing projects for Rapidflyer, ensuring business continuity while progressively modernizing the stack and reducing technical debt. – Designed and developed multiple new microservices using the SLIM micro-framework, improving modularity and reducing the time to deliver new features by 50%. – Led the architecture and design of a new B2B logistics platform, focused on managing product shipments efficiently across multiple channels. – Developed a custom B2B web application under CodeIgniter, inspired by the core logic of rapidflyer.com, tailored for professional use cases and order flows. – Integrated Symfony / SensioLabs components (e.g., Pimple) into the CodeIgniter codebase to bring it closer to modern PHP standards and better enforce SOLID principles. – Facilitated team training on SOLID principles, agile methods, CI/CD workflows, and software design best practices—boosting developer velocity and code quality. – Helped set up lightweight CI/CD pipelines to streamline deployment and testing workflows, reducing production delivery time and improving reliability.

– Maintained and continuously evolved critical customer relationship, prospecting, and remote control platforms, supporting thousands of daily users and directly impacting customer satisfaction and operational efficiency. – Ensured reliability and performance of development environments through regular updates and environment standardization across teams, reducing onboarding time and environment-related bugs by 25%. – Designed and implemented a robust, centralized EventStore architecture to improve inter-service communication and event consistency across the company's distributed systems. – Developed custom drivers in PHP, Node.js, and Java to interface with the EventStore, enabling all legacy and new applications to publish/consume events in a standardized and monitored way. – Enabled clustering and high-availability monitoring, supporting better fault tolerance and improving uptime for critical business services. – Supported application teams in the integration of the new event-based system, contributing to better scalability and traceability across the platform ecosystem.

– Led the complete redesign of the internal CRM using Symfony 2, evolving it into a microservices-oriented architecture to modularize pricing, costing, and production logistics. – Delivered a scalable system enabling the dynamic management of manufacturing and transport lead times, resulting in a 20% improvement in quote accuracy and operational responsiveness. – Designed and implemented a custom ETL (Extract, Transform, Load) system, enabling reliable data synchronization and flow between multiple frontend and backend applications. – Integrated a Node.js-based internal event manager to orchestrate real-time communication between ETLs, microservices, and third-party tools—reducing inter-service latency and manual reconciliation. – Enabled business teams to adapt prices and production planning in real time, directly contributing to improved customer experience and supply chain agility. – Facilitated smoother collaboration between dev teams by introducing standardized interfaces and documentation across services, accelerating feature delivery by ~30%.

– Participated in the definition and drafting of technical specifications for key internal projects related to the e-commerce back-office, collaborating closely with product owners and business analysts. – Contributed to the development of several core back-office features, supporting product catalog management, order processing, and logistics flows. – Implemented comprehensive unit and integration tests, helping to reduce production bugs by ~40% and improve overall system stability. – Ensured ongoing maintenance and patching of critical production applications, including hotfixes and performance optimizations, minimizing downtime and supporting 24/7 operations. – Collaborated within an Agile team to meet strict delivery deadlines and maintain high code quality, contributing to the seamless management of thousands of SKUs and daily e-commerce operations.

– Contributed to the development of onboard/track communication systems for train networks, focusing on the integration of Web Services to enable real-time data exchange between onboard systems and ground infrastructure. – Analyzed and documented the existing suite of Bombardier's proprietary WebServices, identifying integration points and improving clarity for future system expansion. – Developed and deployed client Web Services in Java and PHP, used in embedded systems, ensuring consistent and reliable connectivity in operational train environments. – Designed and executed test plans for the onboard/track interface, validating data reliability, latency, and failover scenarios, contributing to enhanced communication system robustness. – Built a dynamic reporting web application to visualize test results and integration progress, streamlining communication across engineering and QA teams. – Created a step-by-step tutorial for deploying Bombardier's client Web Services in both Java and PHP, improving developer onboarding and accelerating project ramp-up time by ~40%. – Collaborated with cross-functional teams in a highly regulated industrial environment, gaining exposure to transport safety standards and embedded software constraints.