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Devedanos

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Asnières-sur-Seine, France
I develop your app on budget, without compromising software quality | Agile & Lean Development
Typescript React.js Next.js Node.js Expert - Full-stack Developer I develop your custom web application on budget, ensuring user satisfaction and business objectives are met without compromising software quality! With over 5 years of intense experience designing and deploying software, I specialize in Agile, Lean Manufacturing, Continuous Delivery, React, Next, Nest, Typescript, Node, and Javascript. ♻️ An Iterative Approach: Think Big, But Start Small And Walk Step By Step With experience, I learned how to minimize the risks of market rejection, running out of budget, and software instability. Let us build a great digital solution, similar to a high tower! But first, let us start with a tent in a few days, then turn it into a house, a 2-story building... to make sure we can build this tower! 👷🏽‍♂️ What I Can Do for You: - Custom development of your interactive, multilingual (i18n) single-page application with server-side rendering and static site generation, optimized for SEO; - Custom development of your backend services, such as APIs in RPC, REST, GraphQL, or in real-time with Publish/Subscribe protocols (mqtt, websocket…); - Rapid feature development with test-driven development (TDD); - DevOps development of automated deployment pipelines in Continuous Integration / Continuous Deployment with automated tests (unit, rendering, visual, end-to-end) ensuring no reoccurrence of previously fixed regressions; - Iterative development management in Continuous Delivery based on Agile and Lean principles, reducing Time To Market (affecting lead and cycle times); - Web integration (HTML and CSS) in responsive web design and accessible (a11y) from graphic mock-ups; - Technical support and user training; 👔 Whom I Have Worked For: - Large corporations like Valéo, Vodafone Ziggo, Rapido... - Startups like La Suite Territoriale incubated at ANCT and medium-sized enterprises. 💎 Strengths: - Fluent in English - Pedagogical - Quick adaptability and learning abilities - Passionate about innovation and resource optimization (budget, time, effort…) - Understanding of business and commercial stakes - Use of a project management method that delivers tangible daily progression, keeping the source code always ready to be deployed - Ability to discern the value of a product and prioritize development accordingly - Genuine and human interest in the end users of my products, whose satisfaction is my priority. 🛠️ Technical Stack: - Javascript, Typescript, Node.js, Java - Next.js/React.js - Express.js, Nest.js, Spring Boot - Docker - Jest/Vitest - Storybook - Playwright - Git - HTML, CSS - MongoDB, PostgreSQL - REST, RPC, GraphQL - Websocket, Mqtt - Amazon Web Services
1 personne dans leur équipe
Parle Anglais, Français
4 projets dans leur portefeuille
Travaille à distance à travers le monde
Membre Sortlist depuis 2023
Fondée en 2019
8 prix décernés
5/5
(1 avis clients)

Services

4 services offerts par Devedanos

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  • Description
    We develop your entire solution: from UI design, integration, and development, to backend development, automated testing, and deployment.

    Technically, we can do the following:
    - front-end development of Single Page Applications via Server Side Rendering and Client Side Rendering;
    - REST and JSON APIs and GraphQL, or real-time Pub/Sub via WebSocket on the backend;
    - ensure code quality with the development of the automated tests (unit, integration, visual, interactive, application, system and performance);
    - automate application deployment by setting up Continuous Delivery pipelines, leveraging containerization via Docker, and versioning solutions from Gitlab and GitHub

    What are our prices?
    We charge usually a €10,4k subscription per month. We require a minimum down payment of 50% before getting to work.
    Also, if we define a budget of €50k to develop your idea, we will maybe not need to use it completely.
    We will not ask you to pay it in one settlement. Rather, we keep charging for the work of the upcoming month until the application is developed as agreed, and hopefully, the €50k will not be completely consumed.

    What we do not accept:
    "I want you to commit to the time it will take for you to develop the features listed".
    No, we do not estimate precisely how much time we'll spend on a task. Not out of fear of risk, but out of professionalism.
    Programming is not a productive activity (where tasks look the same), but a creative activity dependent on several non-deterministic factors that we can't get to know beforehand.
    ESTIMATES ARE NOT A RELIABLE PREDICTION TOOL, so we found a way to work without them: WE DON'T CREATE A FEATURE IN ITS MOST ADVANCED VISION IN THE FIRST PLACE, WE SIMPLIFY OR PROPOSE INTELLIGENT, TIME-SAVING ALTERNATIVES SO THAT WE RATHER UPDATES every day. We rely on daily deliveries to our customers and end users to get feedback on those simple features as soon as possible. We find out about their adjustments later. This allows a lot of adjustments at no extra charge for our customers.


    Skills:
    Architecture and concepts: MVC, FLUX, Data Down Actions UP (DDAU), OOP, SOLID patterns, REST, JSON, RPC, GraphQL, SOAP API, Single Page Application (Server Side Rendering, Client Side Rendering, Static Site Generation), JAMStack, web worker, microservices, serverless, containerization, virtualization, Infrastructure As Code, ORM/ODM,
    TDD, BDD, tests (unit, integration, interaction, visual, application, system, performances),
    Publish/Subscribe Protocols (Websocket, Message Queuing, Kafka), Design Patterns, Hexagonal Architecture, TMForum

    Exploitation Systems(OS): Linux (Ubuntu, Debian, RaspBian, RaspiOS), Mac OS, Windows (XP, 10,11, Server 12,16)

    Languages: JavaScript ES5, JSON, PHP7-8, SQL, HTML5, CSS3, XML, SASS, PostCSS, Java SE 8 to 21, Typescript

    CSS and UI components Framoworks / Libraries: Bootstrap [4,5], TailwindCSS 2, Bulma CSS, Material UI/MUI, AntDesign, ParkUI

    JS Frameworks / Libraries: React.js 16 - 18, Redux, React Apollo, React Router, Jotai, React Context, Ember.js, JQuery, Next.js 12 and 13, Lodash, React Hook Form, Formik, Joi, Zod, Emotion, luxon, svgo, PandaCSS ;

    Module bundlers: Webpack, SWC, Babel;

    Node.js frameworks: Express.js, Nest.js (Apollo-graphQL), SocketIO, Koa.js

    Desktop Node.js frameworks: Electron.js

    PHP Frameworks : Symfony (4,5), API-Platform

    Databases: PostgreSQL, MySQL, OracleSQL, MongoDB, DoctrineORM, TypeORM, Mikro-ORM, Mongoose

    Testing and Quality: Eslint, Prettier, Stylelint, Jest, Mocha, Chai HTTP, Qunit, Coverall, PHPUnit, Cypress, BrowserStack, Nightwatch, Playwright, testing-library, Cucumber, Gherkin, Husky, MirageJS

    Versioning: Git, Github, Gitlab, Bitbucket

    CI/CD: Gitlab CI, GitHub Actions, Travis CI, AWS Code Pipeline

    DevOps: Docker and Docker compose, Serverless Framework

    Cloud: Amazon Web Services (Lambda, ECS, ECR, EC2, S3, EFS, Amplify, Route53,
    LightSail, IAM, SNS, SES, SQS, API Gateway, DymanoDB, CloudWatch, Secret Manager,
    IAM, S3, DynamoDB, BitBucket, CloudFormation, API Gateway, EventBridge, Code Pipeline)

    Project/Product management methods and tooling: Agile, Lean Manufacturing, CollabNet, Jira;

    Documentation: Markdown, JSDoc, Chromatic, Storybook, Confluence;

    Marketing method and tools: RGPD, defining a client avatar, niche and offer, SEO, Google, Analytics 4, Plausible, Axeptio;

    Visual design tooling: Figma

    CMS: Shopify, WordPress/Bedrock, WooCommerce, Strapi CMS, Ghost

    Analytics and monitoring: pm2 services, Axiom, Grafana

    No/Low Code: Webflow, Bubble
    Compétences en Application web (22)
    Responsive DesignSanity DevelopmentMVC DevelopmentExtranet DevelopmentOpen Source DevelopmentSQL Query OptimizationRelease Process OptimizationObject-Relational MappingLog AnalysisGoogle Sheets+12
    Projets en Application web (4)
    Lead Developer & Full-stack DevOps developer - Application web
    Full-stack PHP JS Symfony Ember.js Developer - Application web
    Full-stack React Nest.js GraphQL TS Developer - Application web
    PHP Developer - Application web
    Clients en Application web (4)
    Product FeedbackMarketing & Publicité | international
    IscoAccessoires & vêtements | international
    ValeoAutomobile | international
    Groupe RapidoAutomobile | national
    En savoir plus sur Application web
  • Description
    We develop your entire solution: from UI design, integration, and development, to backend development, automated testing, and deployment.

    Technically, we can do the following:
    - front-end development of Single Page Applications via Server Side Rendering and Client Side Rendering;
    - REST and JSON APIs and GraphQL, or real-time Pub/Sub via WebSocket on the backend;
    - ensure code quality with the development of the automated tests (unit, integration, visual, interactive, application, system and performance);
    - automate application deployment by setting up Continuous Delivery pipelines, leveraging containerization via Docker, and versioning solutions from Gitlab and GitHub

    What are our prices?
    We charge usually a €10,4k subscription per month. We require a minimum down payment of 50% before getting to work.
    Also, if we define a budget of €50k to develop your idea, we will maybe not need to use it completely.
    We will not ask you to pay it in one settlement. Rather, we keep charging for the work of the upcoming month until the application is developed as agreed, and hopefully, the €50k will not be completely consumed.


    What we do not accept:
    "I want you to commit to the time it will take for you to develop the features listed".
    No, we do not estimate precisely how much time we'll spend on a task. Not out of fear of risk, but out of professionalism.
    Programming is not a productive activity (where tasks look the same), but a creative activity dependent on several non-deterministic factors that we can't get to know beforehand.
    ESTIMATES ARE NOT A RELIABLE PREDICTION TOOL, so we found a way to work without them: WE DON'T CREATE A FEATURE IN ITS MOST ADVANCED VISION IN THE FIRST PLACE, WE SIMPLIFY OR PROPOSE INTELLIGENT, TIME-SAVING ALTERNATIVES SO THAT WE RATHER UPDATES every day. We rely on daily deliveries to our customers and end users to get feedback on those simple features as soon as possible. We find out about their adjustments later. This allows a lot of adjustments at no extra charge for our customers.

    Skills:
    Architecture and concepts: MVC, FLUX, Data Down Actions UP (DDAU), OOP, SOLID patterns, REST, JSON, RPC, GraphQL, SOAP API, Single Page Application (Server Side Rendering, Client Side Rendering, Static Site Generation), JAMStack, web worker, microservices, serverless, containerization, virtualization, Infrastructure As Code, ORM/ODM,
    TDD, BDD, tests (unit, integration, interaction, visual, application, system, performances),
    Publish/Subscribe Protocols (Websocket, Message Queuing, Kafka), Design Patterns, Hexagonal Architecture, TMForum

    Exploitation Systems(OS): Linux (Ubuntu, Debian, RaspBian, RaspiOS), Mac OS, Windows (XP, 10,11, Server 12,16)

    Languages: JavaScript ES5, JSON, PHP7-8, SQL, HTML5, CSS3, XML, SASS, PostCSS, Java SE 8 to 21, Typescript

    CSS and UI components Framoworks / Libraries: Bootstrap [4,5], TailwindCSS 2, Bulma CSS, Material UI/MUI, AntDesign, ParkUI

    JS Frameworks / Libraries: React.js 16 - 18, Redux, React Apollo, React Router, Jotai, React Context, Ember.js, JQuery, Next.js 12 and 13, Lodash, React Hook Form, Formik, Joi, Zod, Emotion, luxon, svgo, PandaCSS ;

    Module bundlers: Webpack, SWC, Babel;

    Node.js frameworks: Express.js, Nest.js (Apollo-graphQL), SocketIO, Koa.js

    Desktop Node.js frameworks: Electron.js

    PHP Frameworks : Symfony (4,5), API-Platform

    Databases: PostgreSQL, MySQL, OracleSQL, MongoDB, DoctrineORM, TypeORM, Mikro-ORM, Mongoose

    Testing and Quality: Eslint, Prettier, Stylelint, Jest, Mocha, Chai HTTP, Qunit, Coverall, PHPUnit, Cypress, BrowserStack, Nightwatch, Playwright, testing-library, Cucumber, Gherkin, Husky, MirageJS

    Versioning: Git, Github, Gitlab, Bitbucket

    CI/CD: Gitlab CI, GitHub Actions, Travis CI, AWS Code Pipeline

    DevOps: Docker and Docker compose, Serverless Framework

    Cloud: Amazon Web Services (Lambda, ECS, ECR, EC2, S3, EFS, Amplify, Route53,
    LightSail, IAM, SNS, SES, SQS, API Gateway, DymanoDB, CloudWatch, Secret Manager,
    IAM, S3, DynamoDB, BitBucket, CloudFormation, API Gateway, EventBridge, Code Pipeline)

    Project/Product management methods and tooling: Agile, Lean Manufacturing, CollabNet, Jira;

    Documentation: Markdown, JSDoc, Chromatic, Storybook, Confluence;

    Marketing method and tools: RGPD, defining a client avatar, niche and offer, SEO, Google, Analytics 4, Plausible, Axeptio;

    Visual design tooling: Figma

    CMS: Shopify, WordPress/Bedrock, WooCommerce, Strapi CMS, Ghost

    Analytics and monitoring: pm2 services, Axiom, Grafana

    No/Low Code: Webflow, Bubble
    Compétences en Développement de Logiciel (10)
    PHP DevelopmentA/B TestingAgile DevelopmentCustom Software DevelopmentNodeJS DevelopmentSoftware ArchitectureSQL ProgrammingLegacy Code RemovalObject OrientedSoftware Consulting
    Projets en Développement de Logiciel (4)
    Lead Developer & Full-stack DevOps developer - Développement de Logiciel
    Full-stack PHP JS Symfony Ember.js Developer - Développement de Logiciel
    Full-stack React Nest.js GraphQL TS Developer - Développement de Logiciel
    PHP Developer - Développement de Logiciel
    Clients en Développement de Logiciel (4)
    Groupe RapidoAutomobile | national
    IscoAccessoires & vêtements | international
    ValeoAutomobile | international
    Product FeedbackMarketing & Publicité | international
    En savoir plus sur Développement de Logiciel
  • Description
    We develop your entire solution: from UI design, integration, and development, to backend development, automated testing, and deployment.

    This can be a one-pager landing page, or a multi-page static or dynamic website for a showcase or e-commerce website.
    In javascript, PHP, Bubble, Worpdress, Webflow with our partners. On Vercel, OVH, AWS, Heroku, or anything else.

    Technically, we can do the following:
    - front-end development of Single Page Applications via Server Side Rendering and Client Side Rendering;
    - REST and JSON APIs and GraphQL, or real-time Pub/Sub via WebSocket on the backend;
    - ensure code quality with the development of the automated tests (unit, integration, visual, interactive, application, system and performance);
    - automate application deployment by setting up Continuous Delivery pipelines, leveraging containerization via Docker, and versioning solutions from Gitlab and GitHub

    What are our prices?
    - A one-pager website on Webflow or Bubble with UX/UI Design: price starts at 1500€
    - A landing page content optimized for SEO and copywriting in French: 633€
    - Technical maintenance: 82€ per hour
    - An e-commerce website on WordPress with Woo Commerce: price starts at 2500€

    Our prices do not include the VAT. But we include the support of our clients throughout the whole process

    What we do not accept:
    "I want you to commit to the time it will take for you to develop the features listed".
    No, we do not estimate precisely how much time we'll spend on a task. Not out of fear of risk, but out of professionalism.
    Programming is not a productive activity (where tasks look the same), but a creative activity dependent on several non-deterministic factors that we can't get to know beforehand.
    ESTIMATES ARE NOT A RELIABLE PREDICTION TOOL, so we found a way to work without them: WE DON'T CREATE A FEATURE IN ITS MOST ADVANCED VISION IN THE FIRST PLACE, WE SIMPLIFY OR PROPOSE INTELLIGENT, TIME-SAVING ALTERNATIVES SO THAT WE RATHER UPDATES every day. We rely on daily deliveries to our customers and end users to get feedback on those simple features as soon as possible. We find out about their adjustments later. This allows a lot of adjustments at no extra charge for our customers.


    Skills:
    Architecture and concepts: MVC, FLUX, Data Down Actions UP (DDAU), OOP, SOLID patterns, REST, JSON, RPC, GraphQL, SOAP API, Single Page Application (Server Side Rendering, Client Side Rendering, Static Site Generation), JAMStack, web worker, microservices, serverless, containerization, virtualization, Infrastructure As Code, ORM/ODM,
    TDD, BDD, tests (unit, integration, interaction, visual, application, system, performances),
    Publish/Subscribe Protocols (Websocket, Message Queuing, Kafka), Design Patterns, Hexagonal Architecture, TMForum

    Exploitation Systems(OS): Linux (Ubuntu, Debian, RaspBian, RaspiOS), Mac OS, Windows (XP, 10,11, Server 12,16)

    Languages: JavaScript ES5, JSON, PHP7-8, SQL, HTML5, CSS3, XML, SASS, PostCSS, Java SE 8 to 21, Typescript

    CSS and UI components Framoworks / Libraries: Bootstrap [4,5], TailwindCSS 2, Bulma CSS, Material UI/MUI, AntDesign, ParkUI

    JS Frameworks / Libraries: React.js 16 - 18, Redux, React Apollo, React Router, Jotai, React Context, Ember.js, JQuery, Next.js 12 and 13, Lodash, React Hook Form, Formik, Joi, Zod, Emotion, luxon, svgo, PandaCSS ;

    Module bundlers: Webpack, SWC, Babel;

    Node.js frameworks: Express.js, Nest.js (Apollo-graphQL), SocketIO, Koa.js

    Desktop Node.js frameworks: Electron.js

    PHP Frameworks : Symfony (4,5), API-Platform

    Databases: PostgreSQL, MySQL, OracleSQL, MongoDB, DoctrineORM, TypeORM, Mikro-ORM, Mongoose

    Testing and Quality: Eslint, Prettier, Stylelint, Jest, Mocha, Chai HTTP, Qunit, Coverall, PHPUnit, Cypress, BrowserStack, Nightwatch, Playwright, testing-library, Cucumber, Gherkin, Husky, MirageJS

    Versioning: Git, Github, Gitlab, Bitbucket

    CI/CD: Gitlab CI, GitHub Actions, Travis CI, AWS Code Pipeline

    DevOps: Docker and Docker compose, Serverless Framework

    Cloud: Amazon Web Services (Lambda, ECS, ECR, EC2, S3, EFS, Amplify, Route53,
    LightSail, IAM, SNS, SES, SQS, API Gateway, DymanoDB, CloudWatch, Secret Manager,
    IAM, S3, DynamoDB, BitBucket, CloudFormation, API Gateway, EventBridge, Code Pipeline)

    Project/Product management methods and tooling: Agile, Lean Manufacturing, CollabNet, Jira;

    Documentation: Markdown, JSDoc, Chromatic, Storybook, Confluence;

    Marketing method and tools: RGPD, defining a client avatar, niche and offer, SEO, Google, Analytics 4, Plausible, Axeptio;

    Visual design tooling: Figma

    CMS: Shopify, WordPress/Bedrock, WooCommerce, Strapi CMS, Ghost

    Analytics and monitoring: pm2 services, Axiom, Grafana

    No/Low Code: Webflow, Bubble

    UX/UI Design: Figma, User Testing, Persona elaboration, Prototyping, Wireframe, Moodboard
    Compétences en Création de site internet (20)
    Back-End DevelopmentMultilingual WebsiteFront End DevelopmentWebsite OptimizationWeb Hosting ManagementSmall Business Web DesignInternetWeb ContentResponsive Web DesignShowcase Website+10
    Projets en Création de site internet (3)
    Lead Developer & Full-stack DevOps developer - Création de site internet
    Full-stack React Nest.js GraphQL TS Developer - Création de site internet
    PHP Developer - Création de site internet
    Clients en Création de site internet (3)
    Groupe RapidoAutomobile | national
    Product FeedbackMarketing & Publicité | international
    ValeoAutomobile | international
    En savoir plus sur Création de site internet
  • Description
    As we are specialized in full-stack development, we can obviously also maintain them: troubleshooting bugs, monitoring the performances, adding new features if the technology used for your solution allows it.

    Your issue is related with PHP, Node.js, React, Wordpress... Or a hosting service like Heroku, Vercel, OVH. A DNS configuration that prevent your website to be online or email delivery issue? We can help you

    Our price start at 82€ for one hour.
    Compétences en Administration web (2)
    Server ConfigurationDomain Management
    Projets en Administration web (3)
    Lead Developer & Full-stack DevOps developer - Administration web
    Full-stack PHP JS Symfony Ember.js Developer - Administration web
    PHP Developer - Administration web
    Avis client en Administration web (1)
    Elynis Martis
    Clients en Administration web (3)
    Groupe RapidoAutomobile | national
    IscoAccessoires & vêtements | international
    ValeoAutomobile | international
    En savoir plus sur Administration web
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Équipe

1 membre dans l'équipe de Devedanos.

Devedanos cover
HistoireDevedanos was created in France, in 2019, by Sébastien NOBOUR, a full-stack developer who debuted in this domain in 2017 by passion. We noticed that most of the industry manages software development the wrong way. Not with us as we are Lean and truly Agile
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Récompenses

Devedanos a été récompensé 8 fois

React API-Platform CRM development2020-9-1PHP, Javascript, REST API, Single Page Application
Symfony 5 Monolithic app development2019-11-1PHP, Symfony Development
Serverless Framework Node.js AWS Lambda Function2021-2-1AWS, Lambda Function, backend develpment, Cloud development
Nest.js Backend REST and GraphQL APIs development2021-2-1Node.js backend development
Full-stack MERN E-commerce Development2021-6-1React, Node.js, REST, Javascript Development
The 12 Fundamental AWS Services2021-4-1Amazon Web Services, Cloud computing
Full-stack Next.js Development2021-10-1React, Javascript, Next.js
Continous Delivery2023-3-1DevOps, Agility, Software Quality

Avis clients

1 Avis clients pour Devedanos

5/5
(1 avis clients)
EM
Elynis MartisOwner chez Bunitessa
ServiceAdministration web
SecteurConseil en management
Équipe1 - 2
5/5

I really enjoyed working with Sébastien. You can really feel he has a lot of passion and knowledge. Sébastien is very clear in his way of communicating. He as well does not hesitate to give additional tips or advice when needed. He did an EXCELLENT job for my website!

ServiceAdministration web
SecteurConseil en management
Équipe1 - 2
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Contact

Coordonnées de Devedanos

Détails

https://www.devedanos.com
  • Siège social4 Avenue Laurent Cély, Asnières-sur-Seine, France
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