Développeur Web Full stack Python/Angular H/F - Paris

Mission
The mission of Speechify is to make sure that reading is never a barrier to learning.

Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its 2025 Design Award winner for Inclusivity.

Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies

What You’ll Do

• Lead the design, architecture, and development of native Windows desktop applications using Windows App SDK, WinUI (or related UI frameworks), C#, XAML, and — when needed — C++.
• Define and enforce best-practices for Windows desktop development across the codebase: code architecture, performance, memory usage, responsive UI, cross-version compatibility (Windows 10/11+), and maintainability.
• Drive accessibility efforts: integrate and validate support for accessibility APIs (e.g. Microsoft UI Automation or other relevant Windows accessibility frameworks), ensure UI controls, focus management, keyboard navigation, screen-reader support, and usability for users with disabilities.
• Collaborate closely with product designers, UX researchers, QA, and other stakeholders to shape feature planning, UI/UX architecture, and long-term roadmap for the Windows platform.
• Take ownership of full lifecycle of features: conception → design → implementation → testing → release → maintenance. Ensure quality, reliability, and consistency across releases.
• Identify, diagnose, and resolve complex bugs, performance bottlenecks, memory leaks, rendering issues, or compatibility problems — and propose robust architectural or design solutions.

An ideal candidate should have
Required:

• 3+ in Windows desktop application development using Windows App SDK, WinUI (or similar), C#, XAML — and ideally additional experience with native Windows code (C++, Win32/WinRT/COM).
• Deep understanding of Windows application architecture, including interop between managed code (.NET) and native code.
• Proven track record of designing, building, and shipping production-quality desktop applications, with an emphasis on reliability, performance, scalability, and maintainability.
• Strong experience with accessibility APIs on Windows (e.g. Microsoft UI Automation or similar), and a dedication to building accessible and inclusive software.
• Excellent software engineering fundamentals: OOP, design patterns, data structures, algorithms, memory management, multi-threading or asynchronous programming (where relevant).
• Experience leading technical design, mentoring other engineers, conducting code reviews, and making architecture-level decisions.
• Strong communication skills; ability to articulate tradeoffs, collaborate with cross-functional teams, and drive consensus.
• A user-centric mindset: focus on building polished, intuitive, and accessible experiences for end users.

Preferred / Bonus:

• Experience with writing automated tests for UI — unit tests, integration tests, UI automation tests; familiarity with relevant testing frameworks.
• Experience with performance optimization for desktop apps (memory usage, startup time, rendering performance, high-DPI support, responsiveness under load).
• Experience with localization/globalization, right-to-left UI support, internationalization, accessibility for multiple regions.
• Familiarity with telemetry, analytics, crash reporting, logging, and error monitoring in desktop applications.
• Previous experience in shaping CI/CD workflows, release pipelines, and deployment strategies for desktop applications.
• Demonstrated ability to take ownership of feature areas or modules and drive them long-term, including maintenance, refactoring, and technical debt management.

What we offer

• A high-impact role: you will define architecture, shape the future of our Windows product, and directly influence what millions of users see and experience.
• A collaborative, flat-structure engineering culture — you are not just a coder, but a builder and a decision-maker.
• Opportunities to lead — mentor others, steer technical direction, and grow into broader technical leadership (e.g. Tech Lead, Architect).
• Flexibility, autonomy, and responsibility: you define how to solve problems, own features end-to-end, and contribute to long-term product vision.
• A purpose-driven mission: building software that’s reliable, accessible, and user-centered — making a real difference for people.

The France Based
Salary range for this role is: 30,000-100,000 USD/Year + Bonus + Stock depending on experience.

Think you’re a good fit for this job?
Tell us more about yourself and why you're interested in the role when you apply.

And don’t forget to include links to your portfolio and LinkedIn.

Not looking but know someone who would make a great fit?
Refer them!

Speechify is committed to a diverse and inclusive workplace.
Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

En tant que
Tech Lead
, vous êtes la
référence technique
sur l'ensemble de notre plateforme : les expériences front e-commerce de nos deux marques (web, app, bornes connectées, frigos connectés) et l'ERP qui pilote notre production, de la planification à la livraison.

Vous
participez activement au développement
des différentes plateformes : votre leadership technique s'exerce autant par l'exemple — le
leading by doing
— que par la revue et l'arbitrage.

Votre rôle couvre l'ensemble de nos plateformes : vous encadrez nos développeurs internes, vous êtes l'interlocuteur technique de notre partenaire de développement externe, et vous contribuez aux arbitrages techniques avec les Product Managers de chaque périmètre.

Vous reportez directement à notre CPTO.

Vos missions

🛠️ Développement

• Concevoir et développer vous-même des fonctionnalités clés sur le front ecommerce et sur l'ERP.
• Prendre en main les sujets techniques les plus complexes ou les plus sensibles, en particulier sur l'ERP.
• Entretenir une
  pratique de code régulière
  , qui nourrit la pertinence de vos revues et de vos arbitrages d'architecture.

🧭 Leadership technique

• Garantir la
  qualité, la robustesse et la maintenabilité
  des livrables sur l'ensemble du périmètre front ecommerce et ERP.
• Faire évoluer nos
  standards d'ingénierie
  (revue de code, qualité, CI/CD) au rythme de la croissance de la plateforme.
• Construire une
  documentation et un partage de connaissance solide et collectif
  , en particulier sur l'ERP.
• Accompagner les
  migrations d'infrastructure
  nécessaires à l'automatisation et à la sécurisation des déploiements.
• Être le point de contact technique pour les sujets de
  sécurité et de gestion des accès
  , en lien avec les équipes sécurité du groupe.

🤝 Collaboration & pilotage externe

• Être l'interlocuteur technique de référence de notre partenaire de développement externe au quotidien.
• Suivre la qualité et la vélocité de sa delivery.
• Contribuer aux arbitrages d'architecture en coordination avec ce partenaire, sur l'ensemble des produits concernés.
• Travailler en étroite collaboration avec les Product Managers de chaque périmètre pour évaluer la faisabilité technique des sujets de roadmap.
• Challenger les choix techniques à l'aune de leur impact business : coûts, vélocité, risques.

💡 Développement de l'équipe

• Encadrer
  et accompagner au quotidien nos développeurs internes : mentorat, pair programming, revues de code.
• Identifier leurs axes de progression et construire avec eux un plan de développement technique.
• Diffuser les
  bonnes pratiques
  de développement assisté par l'IA, déjà bien ancrées dans nos équipes.

🛠️ Stack et outils

• Node.js · MongoDB · React.js ·
• Google Cloud Platform
• Linear · Claude Teams
• Sentry - Playwright

4 à 6 ans d'expérience en développement, avec une première expérience de référent technique ou de lead sur un périmètre similaire, et une vraie envie de continuer à coder au quotidien.

• Vous maîtrisez Node.js, MongoDB et React, et vous codez avec plaisir et régularité
• Vous avez un goût prononcé pour la conception et l'architecture
• Vous avez une appétence ou une expérience DevOps/Cloud/Cyber : CI/CD, cloud (idéalement GCP), gestion des accès, sensibilité sécurité
• Vous avez une expérience de l'écriture de tests automatisés (Jest, Playwright, Testing Library)
• Vous avez une expérience dans la mise en place de processus et outils d'analyse de qualité de code (SonarQube, Sentry, Chromatic, Axe Devtools)
• Vous avez une expérience en B2B
• Vous savez transmettre et faire grandir des profils juniors ou intermédiaires
• Vous êtes rigoureux·se et documentez naturellement vos décisions techniques
• Vous avez mis en place, pratiqué et amélioré votre workflow avec l'IA dans le développement

Les +

• Expérience sur un ERP ou un outil métier interne
• Expérience de structuration de pratiques d'ingénierie en contexte de scale ou de pivot
• Expérience de pilotage ou de collaboration étroite avec un prestataire externe

Ce que vous trouvez ici

Un périmètre large et structurant
: une vue d'ensemble sur toute notre plateforme technique, à travers nos différents produits.

Un vrai rôle de structuration
: un poste pensé pour installer durablement des pratiques d'ingénierie qui font grandir l'équipe sur le long terme.

Une culture IA déjà ancrée
: nos équipes utilisent l'IA dans leur workflow de développement au quotidien.

Un produit qui a du sens
: des repas concoctés et fabriqués en interne, des engagements RSE concrets, un impact concret sur le bien manger au travail.

• Entretien de qualification avec un membre de l’équipe RH : présentation du poste et des attentes de l’entreprise
• Entretien technique avec un membre de l’équipe partenaire : revues des expériences, discussions techniques
• Entretien avec le CPTO
• Cas pratique en live dans nos locaux
• Rencontre avec l'équipe

Google welcomes people with disabilities.

Minimum qualifications:

• Bachelor’s degree or equivalent practical experience.
• 2 years of experience with software development in one or more programming languages, or 1 year of experience with an advanced degree.
• Experience in programming with C++ and Python.

Preferred qualifications:

• Master's degree or PhD in Computer Science or related technical fields.
• 2 years of experience with data structures and algorithms.
• Experience with Machine learning and advanced programming.
• Experience developing accessible technologies.

About The Job
Google's software engineers develop the next-generation technologies that change how billions of users connect, explore, and interact with information and one another. Our products need to handle information at massive scale, and extend well beyond web search. We're looking for engineers who bring fresh ideas from all areas, including information retrieval, distributed computing, large-scale system design, networking and data storage, security, artificial intelligence, natural language processing, UI design and mobile; the list goes on and is growing every day. As a software engineer, you will work on a specific project critical to Google’s needs with opportunities to switch teams and projects as you and our fast-paced business grow and evolve. We need our engineers to be versatile, display leadership qualities and be enthusiastic to take on new problems across the full-stack as we continue to push technology forward.

YouTube Knowledge is a 100 engineers and Program Manager (PM) team in Paris, that works on understanding and organizing YouTube's corpus, helping Search and Discovery to continue driving YouTube's strong growth. The team works on: Kapla, Semantic content understanding, Knowledge Platform and GenAI Features. You will work on a variety of challenges including infrastructure, complex algorithms, data mining, and machine learning including Large Language Models (LLMs) and GenAI. We process data sets at YouTube scale. You will apply those techniques to improve impactful products from YouTube including Home, Search, Recommendations and vertical experiences. You cover both infrastructure and data quality, and work on a number of exploration projects. Most of the team's work directly impacts YouTube's top priorities including Responsibility, Families and Strategic Initiatives.

At YouTube, we believe that everyone deserves to have a voice, and that the world is a better place when we share, and build community through our stories. We work together to give everyone the power to share their story, explore what they love, and connect with one another in the process. Working at the intersection of cutting-edge technology and boundless creativity, we move at the speed of culture with a shared goal to show people the world. We explore new ideas, solve real problems, and have fun — and we do it all together.

Individual pay is determined by factors including job-related skills, experience, and relevant education or training.

France: €82000 - €84500 (EUR) + 15% bonus target + equity + benefits

Responsibilities
Learn more about benefits at Google .

• Write product or system development code.
• Participate in, or lead design reviews with peers and stakeholders to decide amongst available technologies.
• Review code developed by other developers and provide feedback to ensure best practices (e.g., style guidelines, checking code in, accuracy, testability, and efficiency).
• Contribute to existing documentation or educational content and adapt content based on product/program updates and user feedback.
• Triage product or system issues and debug/track/resolve by analyzing the sources of issues and the impact on hardware, network, or service operations and quality.

Google is proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. See also Google's EEO Policy and EEO is the Law. If you have a disability or special need that requires accommodation, please let us know by completing our Accommodations for Applicants form .

Mapbox is the leading real-time location platform for a new generation of location-aware businesses. Mapbox is the only platform that equips organizations with the full set of tools to power the navigation of people, packages, and vehicles everywhere. More than 4 million registered developers have chosen Mapbox because of the platform’s flexibility, security and privacy compliance. Organizations use Mapbox applications, data, SDKs and APIs to create customized and immersive experiences that delight their customers.

What We Do
The Studio team is a warm, supportive, and versatile group of software engineers and product designers. We love finding systematic solutions to hard problems, and, in the process, inventing the future of how people interact with location. Beautiful, intelligent, well designed maps are a cornerstone of what makes Mapbox maps special, and the Studio team creates tools to make that happen. Check out our
Studio product
!
As AI becomes embedded in modern engineering workflows, we value engineers who can thoughtfully integrate AI into design, development, and decision-making. Our interview process will include discussion of how you use AI in your engineering workflow.

What You'll Do
Mapbox is looking for a talented and innovated Software Development Engineer II to join our Studio team.

As a Software Development Engineer II (Fullstack), you can expect to:

• Lead contributions to Mapbox Studio, our flagship map design tool. Studio is a complex React / Redux app that requires fluency in Javascript, Typescript, and web technologies. Ship simple, approachable, performant, testable code.
• Facilitate and make informed technical decisions that drive the long term vision for maps at Mapbox.
• Build workflow tools that enable our map designers to create beautiful maps faster and easier.
• Solve complex architecture problems in an extensible, maintainable way. Bring clarity to complex technical problems across the organization.
• Participate in the design process by listening to users, attending design critiques, and providing guidance and feedback informed by a deep understanding of technical constraints.
• Reduce technical debt, share your knowledge, and invest in your teammates’ health and happiness, while optimizing application performance and accelerating feature velocity.
• Promote a culture of operational excellence by meticulously testing and monitoring our systems and code, writing documentation, and being on-call to support the health of our services.

What We Believe Are Important Traits For This Role

• Expertise in Modern Frontend Architecture: You have a proven track record of building full-featured client-side applications using React and TypeScript (ES6+), with a deep understanding of HTML5 and CSS3.
• Backend Infrastructure: 3+ years of experience building and maintaining scalable high volume low latency backend services and CI/CD pipelines.
• Performance Optimization: A sophisticated understanding of frontend architecture for large-scale, data-intensive applications, with a focus on memory management and rendering efficiency.
• AI Usage: Proficiency using AI as a sounding board and productivity multiplier while maintaining a trust but verify approach auditing AI-generated code for security, performance, and architectural integrity.
• State Management Mastery: You are proficient in designing complex application and component states using solutions like Redux, ensuring scalable and maintainable data flow.
• Fullstack Integration: You have extensive experience integrating RESTful APIs and a functional understanding of cloud infrastructure, specifically AWS.
• Quality Assurance: You are comfortable working with testing frameworks such as Playwright or Jest to ensure code reliability and performance.
• Operational Excellence: You take pride in the long-term health of your systems, including monitoring metrics, triaging regressions, and proactively resolving customer-facing issues.
• Autonomy and Execution: You can independently navigate the full development lifecycle, translating design specifications into high-quality, production-ready code.
• Collaborative Mindset: You possess a strong desire to mentor peers, engage in pair programming, and document your expertise to elevate the entire engineering team.

Nice to Have Traits for This Role

• Geospatial Expertise: Prior experience working with web mapping technologies or geospatial data visualization.

What We Value
In addition to our core values, which are not unique to this position and are necessary for Mapbox leaders:

• We value high-performing creative individuals who dig into problems and opportunities.
• We believe in individuals being their whole selves at work. We commit to this through supportive health care, parental leave, flexibility for the things that come up in life, and innovating on how we think about supporting our people.
• We emphasize an environment of teaching and learning to equip employees with the tools needed to be successful in their function and the company.
• We strongly believe in the value of growing a diverse team and encourage people of all backgrounds, genders, ethnicities, abilities, and sexual orientations to apply.

Our annual base compensation for this role ranges from $160,650 - $217,350 for most US locations and 5% to 10% higher for US locations with a higher cost of labor. Job level and actual compensation will be decided based on factors including, but not limited to, individual qualifications objectively assessed during the interview process (including skills and prior relevant experience, potential impact, and scope of role), market demands, and specific work location. Please discuss your specific work location with your recruiter for more information.

By applying for this position, you acknowledge that you agree to the
Mapbox Privacy Policy
which is linked here.
Mapbox participates in E-Verify to confirm employee work authorization. Please refer to the
Notice of E-Verify Participation
and
Right to Work
posters for more information.
We are committed to a fair and equitable hiring process. We do not discriminate against any protected class.