Vincent REHM

Senior Ruby on Rails Developer | Elixir

Salaire / Taux journalier

Paris, France

Freelance, ouvert au CDI

Peut venir sur site

Expertises

Domain Driven DesignTest Driven DevelopmentRuby on RailsElixirPostgreSQLSQLiteRedisGitRESTful APIsDéveloppement BackendDéveloppement FullstackTailwind CSSJavascriptPhoenixRubyDynamoDBRequêtes SQLDockerHerokuSwagger/OpenAPILinuxGitHubCircleCIBase de données SQLIA

Langues

AnglaisFrançaisEspagnol

À propos

Introduction

Full-stack developer with 7+ years expertise in Ruby on Rails and Elixir, specializing in modernizing legacy systems and optimizing performance. Successfully reduced critical API endpoint queries by 90% and cut container image size by 40% at Ogury. As President of Coderative and experienced entrepreneur, I deliver clean architecture and TDD solutions that transform business operations through thoughtful digital implementation.

Liens

Expérience de travail

Senior Développeur full stack

Ogury LtdFreelance

juil. 2023 - Présent

3 ans 4 mois

Paris, France

Ruby on Rails full-stack development, API. Domain, Command design patterns. Following daily TDD wit RSpec and Cucumber. Working in english. - Modernised a 10-year-old 'source of truth' platform (hundreds of micro-services depend on it) by containerising the stack with Docker + Kubernetes and upgrading Rails/Gems without downtime. - Cut a critical API endpoint's DB queries from 111 to 12 by introducing PG views / pg_search and refactoring N + 1 patterns; next step: materialised views for sub-50 ms latency. - Raised test coverage from 67% to 87% and enabled fully randomised RSpec runs; built a slim CI pipeline that now runs 30% faster on each commit. - Implemented SLI/SLO monitoring (Datadog) and a lightweight Command Pattern architecture to isolate business rules and simplify onboarding of new devs. - Drove dead-code removal and dependency pruning (-20% Gemfile size), reducing container image size by 40% and cutting build times in half.

President

CoderativeFreelance

juil. 2021 - Présent

5 ans 4 mois

We are a collective of experienced developers, designers, and entrepreneurs. We design and develop business applications using an agile and pragmatic approach. #CLEAN_ARCHITECTURE #TDD #REMOTE

Entrepreneur, CTO et freelance web

Indépendant

juin 2019 - Présent

7 ans 5 mois

Lyon Area, France

Entrepreneur since 2014, I leverage my experience to help optimize the efficiency of your business operations through digital solutions. Digital culture Bringing you state-of-the-art web and startup best practices for your critical business challenges. Entrepreneurial support Sharing my entrepreneurial experience to help accelerate the launch of your venture. Product & marketing Designing and implementing features in an agile way to help you achieve your business goals. Technology Developing and deploying the most suitable technologies for your business needs.

Fullstack web développeur

Vincent REHMFreelance

sept. 2016 - Présent

10 ans 2 mois

69340 Francheville, France

Batch #30 of Le Wagon Paris. I’ve never stopped learning and improving my development skills, nor exploring new technologies. I also work in product management, with a strong grasp of both business and technical challenges.

Back End Developer

RegateFreelance

janv. 2023 - juil. 2023

7 mois

Paris, France

Ruby on Rails backend development, API and Active Admin. Domain, Command design patterns. Following daily TDD wit RSpec. Team of 40 devs, speaking 🇫🇷 / 🇺🇸.

Product Senior / développeur

Avenir AtlantiqueFreelance

juil. 2021 - août 2022

1 an 2 mois

Paris, France

Freelance mission Avenir Atlantique, a dynamic company based in Deux-Sèvres, designs and delivers digital solutions for passenger road transport. With over 100 years of industry experience and nearly 400 employees, the company stands out for its strong investment in digital tools benefiting its staff, passengers, and clients. I led the design, development, and deployment of GIL, an internal application used by 450 drivers to report incidents and by the operations team to manage follow-up and resolution. Following this success, I supported the launch of a second application focused on optimizing vehicle and driver services, designed to help the planning team increase efficiency through a modern, custom-built software. Key responsibilities included: - Defining objectives and key results (OKRs) - Technical stack choices and architecture foundations - User research and needs gathering - Technical brief for the first set of features - Ongoing feature prioritization - Roadmap updates - Ruby on Rails development - Automated and user testing - User interviews - Documentation - Public retrospectives at the end of each cycle

Lead Growth Marketing BivwAk!

BNP ParibasFreelance

janv. 2020 - juil. 2021

1 an 7 mois

Paris, France

Support for Bivwak! and product squads on growth and product strategy challenges. - Set up a weekly growth process - Facilitated workshops on growth hacking - Produced growth audit reports - Built and maintained growth dashboards - Designed and implemented tracking plans - Created acquisition action plans - Contributed to squad roadmaps - Developed an internal portal dedicated to growth initiatives - Built and maintained growth automation bots

Fullstack Developer & Product Manager

CodeReef - The AI Innovation PlaygroundFreelance

sept. 2019 - oct. 2020

1 an 2 mois

Paris Area, France

CodeReef provides a web-based playground where R&D teams can use our software tools to build, benchmark and share functional Artificial Intelligence solutions 100x faster than what was possible before.

Startup Founder

Deligreens

nov. 2014 - janv. 2019

4 ans 3 mois

Région de Lyon, France

Deligreens purpose Simplify access to local, organic and respectful food for human beings, through an urban delivery service, and a sustainable organization, exemplary and inspiring for its ecosystem. Roles at deligreens - co-founder - CTO - scrum master - product manager - holacracy facilitator (method of decentralized management and organizational governance) - data analyst Key projects or occupied positions - setting up a very light information system (google sheets) to manage operations for 2 years - preparation and delivery operations for 1 year and a half - development of one of the versions of the online shop (liquid and JS, subscription feature) - implementation of the technical architecture (technical stack) - recruiting and setting up a team of 5 fullstack developers - responsible for the supply of fresh products for 3 months - implementation of tracking tools + data visualization - deployment of business applications necessary for logistics (logistics product manager) • products and producers management workflow • automatic supplier orders workflow • delivery tour planning • preparation interface on tablets • semi-automatic refunds - product manager for the online store in 2018 • backlog management • story writing + prototyping • enumerating and fixing blocking bugs preventing customer from placing orders - global product management between logistics and e-commerce • roadmap • reviewing priorities (holacracy and scrum)

University Partnership Development Manager

Yupeek

sept. 2013 - oct. 2014

1 an 2 mois

Région de Nancy, France

Definition and designing of services provided to universities, aligned to Yupeek's business strategy, including the new product introduction : "Career Center" - Business development regarding Yupeek's university face - Change management, with regard to prior university services - Increase in student base - Increase in university prescription actions - Represent Yupeek during lectures & interventions about personal branding - Maintain a single channel of communication regarding Yupeek's university face - Collaborate with product management on "V3 and Career Center" - Contribute to the development of new working methods (OKR, data analysis) - Identify market opportunities for Career Center development - Start the HR function and mobilize teams to optimize the commercialization of the Career Center - Identify and facilitate potential partnerships (exhibitions, fairs, Erasmus, lectures)

CMO assistant

NukSo

mars 2012 - août 2012

6 mois

Région de Paris, France

NukSo edits Placelib, a mobile application for parking assistance within the Sciences Po Paris Incubator program. Strategic accompaniment for partners regarding marketing operations and community stimulation with an high constraint in localization for these new users and an achievable mobile development. • Redesign of Placelib’s business model in collaboration with the two founders: improvement in coverage and quality of service (V2) • Marketing strategy design: co-decision of strategic priorities in order to extend user base, responsible for market study, actual segmentation and identification of key targets (geographical areas, types of users…) • Communication design and monitoring: implementation of multicanal communication operations (street, web, social networks, buzz marketing...), budgets monitoring and ROI assessment, strategic recommendations to the CMO for future operations • Community management: content feed & exchanges with the community (Facebook, Twitter, blog & forum dedicated to urban planning and parking, newsletters), identification of power-user, e-reputation monitoring and development

CEO assistant

Studyka

sept. 2011 - mars 2012

7 mois

Région de Paris, France

Studyka edits business game solutions within the ParisTech Incubator program. Knowledge management about communication and strategic accompaniment for partners in order to design the marketing department. • Extension of Studyka’s business model in collaboration with the three founders: new B2B offer (white label) • Creation of the marketing department: study of B2B & B2C business game needs, web design & user experience analyze, development strategy of the community, segmentation of Studyka services • Business game support and communication: communication planning & establishment of KPI, street marketing operation on Studyka brand (design and monitoring), SEO, formalization of communication processes (knowledge management) • Community management: benchmark of best practices, creation of communication media (flyers, teaser, Facebook page)

Project manager of "ArcelorMittal cup" (robotics)

ArcelorMittal

janv. 2011 - mai 2011

5 mois

Metz, France

Organizational staff for one of its main corporate event, the ArcelorMittal robotic cup. • Development of the employment brand: co-study with HR and communication departments, synthesis of the educational content of the cup • Responsible for communication: creative brief and design of communication media (print, flyers, teaser, Facebook…), reporting & retro planning, competitors relationship monitoring • Co responsible for the cup’s supply chain: delegation of 120 international students from the greatest engineering universities in Europe

Marketing project leader

AZAP

juin 2010 - août 2010

3 mois

Région de Paris, France

The head office trusted me to set up the 1st edition of the Premium club event and marketing promotion for AZAP software. • Commercial offer and organizational strategies design for H1 2011: offer segmentation study, formalization and design of new marketing presentations, SEO strategy (AdWords, natural indexing), organizational audits • Project leader of "Premium club event": design of event content and project management, CRM (ad hoc study of customer needs, reporting of relationships, strategy for customer loyalty)


Formation

Le Wagon

FullStack Developer

2016 - 2016

1 mois

ICN Business School

Master « Grande Ecole »

2009 - 2013

4 ans 1 mois

Lycée Vial, Nantes (FRANCE)

2007 - 2009

2 ans 1 mois

Lycée La Herdrie, Basse Goulaine (FRANCE)

A-levels

2006 - 2007

1 an 1 mois

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