Devedanos
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 person in their team
Speaks English, French
4 projects in their portfolioWorks remotely across the globe
Sortlist member since 2023
Founded in 2019
8 awards conferred5/5
Services
4 services offered by Devedanos
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, BubbleSkills in Web Application (22) Web DevelopmentProgrammingResponsive DesignOpen SourceDevOpsAPI DevelopmentFull Stack DevelopmentWeb Application DevelopmentCI IntegrationTesting Services+12Works in Web Application (4) Clients in Web Application (4) Groupe RapidoAutomotive | nationalProduct FeedbackMarketing & Advertising | internationalIscoClothing & Accessories | internationalValeoAutomotive | international
Learn more about Web ApplicationDescription 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, BubbleSkills in Software Development (10) A/B TestingAgile DevelopmentCustom Software DevelopmentNodeJS DevelopmentSoftware ArchitecturePHP DevelopmentSQL ProgrammingLegacy Code RemovalObject OrientedSoftware ConsultingWorks in Software Development (4) Clients in Software Development (4) Groupe RapidoAutomotive | nationalProduct FeedbackMarketing & Advertising | internationalIscoClothing & Accessories | internationalValeoAutomotive | international
Learn more about Software DevelopmentDescription 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, MoodboardSkills in Website Creation (20) Website DevelopmentShowcase WebsiteResponsive Web DesignWeb ContentInternetSmall Business Web DesignWeb Hosting ManagementWebsite OptimizationFront End DevelopmentMultilingual Website+10Works in Website Creation (3) Clients in Website Creation (3) Groupe RapidoAutomotive | nationalProduct FeedbackMarketing & Advertising | internationalValeoAutomotive | international
Learn more about Website CreationDescription 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.Skills in Website Administration (2) Server ConfigurationDomain ManagementWorks in Website Administration (3) Review in Website Administration (1) Elynis MartisClients in Website Administration (3) Groupe RapidoAutomotive | nationalIscoClothing & Accessories | internationalValeoAutomotive | international
Learn more about Website Administration
Team
1 member in Devedanos's team
StoryDevedanos 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
Awards
Devedanos was awarded 8 times
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
Reviews
1 review for Devedanos
5/5
(1 reviews)
EM
Elynis MartisOwner at Bunitessa
ServiceWebsite Administration
SectorManagement Consulting
Team1 - 2
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!
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Contact
Contact details of Devedanos
Details
https://www.devedanos.com
- Headquarter4 Avenue Laurent Cély, Asnières-sur-Seine, France