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Adam KrimAK

Adam Krim

Fullstack Developer TypeScript Node NestJS React

€500/day
4 projects
Paris, FR
3-7 years
Node.js
NestJS
React.js
Clean Architecture
GraphQL

Average response time: 1 hour

Freelancer profile translated to English.
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About Adam

Full Stack TypeScript Developer, with a Backend dominance. +6 years of experience on high-volume data projects (retail media, SaaS, mobility).

I help product teams evolve their platforms by fixing and/or avoiding technical debt.

- Modernization of legacy platforms (JS → TS, Clean Architecture, DDD)
- Design and evolution of high-volume data APIs
- Redesign of back-offices and business tools
- Integration of third-party systems (Stripe, HubSpot, MangoPay, AWS...)

🔧 Tech Stack

Backend : Node.js • NestJS • Hono • Express
Frontend : React • Next.js • Expo
APIs : REST • tRPC • GraphQL
Database : PostgreSQL • MongoDB • Redis • Bigtable
ORM : Drizzle • Prisma • TypeORM

💎 My Best Practices

Code reviews, pair programming, unit & integration tests, strict TypeScript, clean architecture, structured git.

🎯 Effective Communication

Accustomed to working remotely and in person with different teams (product, support, sales, CSM, international)
Software Publishing

  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 15km)

Experience

  • Lucky Cart
    Malt logoOn Malt
    Fullstack Developer TypeScript
    RETAIL (LARGE RETAILERS)
    July 2024 - September 2025 (1 year and 1 month)
    Paris, France
    LuckyCart uses machine learning algorithms to personalize advertising and promotional journeys in real-time for brands such as Carrefour, Leclerc, or Intermarché. A tech company with 12+ years of expertise in retail media, processing millions of data points daily.

    Mission: Maintain and evolve the legacy code to free up the product team for new features.

    Achievements:
    • Redesign of the internal back-office (React, NestJS)
    • Migration to Clean Architecture / DDD
    • Refactoring JavaScript → TypeScript
    • Automation of manual processes
    • Integration of HubSpot webhooks
    • Resolution of critical bugs and reduction of technical debt
    TypeScript NestJS React.js MongoDB Redis
  • GreenDev
    Full Stack Developer TypeScript
    LOGISTICS AND SUPPLY CHAIN
    August 2023 - March 2024 (7 months)
    Paris, France
    GreenDev is a Parisian startup that develops technological solutions for supervising the recycling of household appliances.

    • Added features to the transport management system (TMS)
    • Development on the API with NestJS
    • Creation of an appointment booking website with React
    • Development on the application for warehouse employees with React Native
    • Assignment of tasks to drivers
    • Monitoring of collections and warehouse machine status
    • Opening the API to partners with Swagger documentation
    NestJS Node.js PostgreSQL React.js React Native
  • APPDRAG
    Malt logoOn Malt
    DevOps
    SOFTWARE PUBLISHING
    January 2023 - December 2025 (2 years and 11 months)
    Elestio is a SaaS that allows deploying open-source software in a few clicks, without DevOps skills, with automatic scaling, backups, and integrated security.

    Mission: Allow clients to manage their infrastructure directly from their code, without going through the dashboard.

    Achievements:
    • Development of a Terraform provider in Go connected to the Elestio API
    • Reduction of management time: from several days to a few minutes
    • Creation of Terraform modules for rapid deployment of clusters (MongoDB, MySQL, OpenSearch, KeyDB, RabbitMQ, Keycloak, ClickHouse, PostgreSQL) with management of adding and removing nodes.
    Golang Terraform Bash Node.js
Check out Adam's experience

Reviews

5.0

Out of 3 ratings

J

Julien

Lucky Cart

Reviewed on 3/13/2025

Adam has very solid technical foundations that allow him to deliver quickly on a daily basis. He is not afraid to take on bugs to resolve them effectively and sustainably. He is also an excellent colleague who integrates perfectly into the squad.
J

Joseph

APPDRAG

Reviewed on 1/18/2023

I entrusted Adam with a solo development mission of about ten days. It was a pleasure working with him, always attentive, he respected the deadlines we set. He took the time to adjust details at the end of the mission following our feedback, great! I highly recommend his services.
Show all 3 reviews

Recommendations

Alexandre PeyrichoutAP
Benoit E.BE
NC
Alexandre Peyrichout and 2 other people have recommended Adam

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Education

  • Master 2 - Expert in Information Technologies
    EPITECH - European Institute of Technology
    2021
  • Master 2 - Entrepreneurship and Project Management
    University of Haute-Alsace
    2021
    Double diplôme suivis pendant le cursus d'EPITECH pour approfondir la partie gestion de projet et d'innovation

Certifications

Skill set

Next.js
PostgreSQL
Redis
GO
PostgreSQL
React Native
TailwindCSS
Golang
Terraform
TypeORM
MySQL
MongoDB
JavaScript
TypeScript

Categories