Kervens – AWS, React, Typescript, experts in Lemon.io

Kervens

From Haiti (UTC-4)flag

Full-stack Web Developer|Senior

Kervens – AWS, React, Typescript

Kervens is a senior full-stack engineer with deep expertise in React, Next.js, Node.js, and TypeScript, and strong hands-on experience with GCP infrastructure. He has led end-to-end builds of complex platforms, including AI-powered systems and custom web frameworks. His strengths include production LLM pipelines, system design, and clear, structured communication.

5 years of commercial experience
Main technologies
AWS
3.5 years
React
6 years
Typescript
3.5 years
Node.js
4.5 years
Next.js
6 years
Additional skills
AI-assisted coding
Terraform
Python
GitHub Actions
CI/CD
GCP
Docker
Web Workers
Tinybird
Heroku
Stripe API
Blockchain
Smart contracts
Web 3.0
Web scraping
REST API
PostgreSQL
Golang
MongoDB
Prisma
Data Modeling
Cloud Architecture
Distributed Systems
Microservices
AI agent development
AI API integration
Claude Code
GitHub Copilot
Gemini API
OpenAI
Vercel
API Gateway
Direct hire
Possible
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Experience Highlights

Software Architect
Mar 2023 - Ongoing3 years 6 months
Project Overview

A cloud-based visual software development environment combining graphical editing, source code, AI-assisted development, and application deployment.

Responsibilities:
  • Architected and developed a visual software development platform integrating backend services, application runtimes, code generation, visual editing, AI-assisted development, and cloud infrastructure.
  • Built a platform spanning about 30 repositories and about 20 services, including an 80-package monorepo, with ownership of backend systems, runtimes, developer tooling, and infrastructure.
  • Reduced development-server request latency from up to about 8 seconds to about 100–300 ms by caching deployment manifests and resource pointers and deploying servers in a more appropriate region.
  • Reduced browser editor memory usage by about 65% by diagnosing and fixing a memory leak under comparable workloads.
  • Enabled near-instant module updates and incremental page builds using dependency tracking, a service-worker-based evaluation cache, and Web Workers for background processing.
  • Enabled bidirectional visual/code editing by building a code transformation engine using parsing, abstract syntax trees, and source-code generation while preserving editable code.
  • Automated platform service deployment with Docker and GitHub Actions, streamlined monorepo package publishing with dependency-aware tooling, and enabled deployment of user applications to external hosting providers.
Project Tech stack:
Node.js
Typescript
Python
Docker
GCP
AWS
Terraform
React
Next.js
AI-assisted coding
CI
CD
GitHub Actions
Web Workers
Software Engineer
Nov 2023 - Mar 20244 months
Project Overview

A SaaS form-building platform with configurable form and funnel workflows supporting payments, upsells, downsells, activity tracking, and analytics.

Responsibilities:
  • Developed the initial form-building platform from technical design to customer-facing release, then transitioned its architecture and infrastructure to an expanded engineering team.
  • Delivered a customer-facing SaaS MVP in under 3 months, initially working alone to build a drag-and-drop form editor, reusable form renderer, backend services, and analytics.
  • Designed and implemented the initial backend, including APIs, data models, and approximately 2–3 services, before handing off development to additional engineers.
  • Enabled publishing to Framer and custom hosting through a reusable form-rendering package and Framer component integrations.
  • Connected payments and analytics by integrating Stripe and Tinybird into the form-building platform.
  • Supported handoff to a five-engineer team by coordinating engineering work and migrating the application from GCP to Heroku to match the incoming team’s experience.
Project Tech stack:
GCP
Heroku
Framer
Stripe API
Tinybird
Lead Engineer
Feb 2022 - Nov 20229 months
Project Overview

A blockchain-based music streaming and investment ecosystem.

Responsibilities:
  • Led a seven-engineer team building a music streaming and investment platform across backend services, infrastructure, web, mobile, and blockchain integrations.
  • Led technical delivery across backend, web, mobile, and infrastructure while remaining hands-on with architecture and implementation.
  • Guided the transition to a decentralized Listen-to-Earn architecture using Web3 protocols and blockchain integrations.
  • Contributed to a fractional music-ownership marketplace through product architecture and smart-contract integrations.
  • Optimized frontend performance and state management for complex, real-time audio data feeds across web and mobile.
Project Tech stack:
Blockchain
Smart contracts
Web 3.0
Full-Stack Developer
Jul 2021 - Sep 20221 year 1 month
Project Overview

A marketing technology SaaS platform used by business customers.

Responsibilities:
  • Contributed to backend services, APIs, databases, and product integrations while leading frontend development for a production marketing SaaS platform.
  • Delivered features across frontend and backend systems within an established SaaS application.
  • Led frontend implementation and coordinated work with backend engineers as product requirements evolved.
  • Developed product features across the frontend, backend, and application data layer.
  • Integrated application services, APIs, databases, and cloud-based infrastructure as the platform evolved.
Project Tech stack:
Node.js
Software Engineer
Apr 2021 - Feb 202210 months
Project Overview

A fintech trading platform focused on backend systems and large-scale data acquisition.

Responsibilities:
  • Implemented web scrapers and data-extraction logic for a fintech trading platform using Node.js and Python.
  • Built scrapers to collect external financial data and convert extracted content into structured formats.
  • Engineered scalable data-scraping pipelines to aggregate real-time financial data from fragmented global sources, supporting the availability of trading signals.
  • Developed processes to clean unstructured web data and load it into trading databases.
  • Improved scraping reliability through retries, error handling, and proxy rotation for unstable external sources.
  • Implemented error-handling and proxy-rotation logic to maintain consistent data flow across volatile external environments.
Project Tech stack:
Node.js
Python
Web scraping
Front-end Developer
Feb 2021 - Sep 20217 months
Project Overview

A legal technology platform.

Responsibilities:
  • Built the React frontend for a legal technology platform and integrated it with backend REST APIs.
  • Translated product mockups and specifications into production user interfaces.
  • Developed reusable application components and managed client-side application state.
  • Supported ongoing product iteration as requirements evolved throughout an extended development cycle.
Project Tech stack:
React
REST API

Education

2030
Mathematics
Bachelor's degree

Languages

French
Advanced
Haitian
Advanced
English
Advanced

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