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Sufiyan – Python, React, AWS, experts in Lemon.io

Sufiyan

From France (UTC+2)flag

Full-stack Web Developer|Senior
Front-end Web Developer|Middle-to-senior
Back-end Web Developer|Senior
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Sufiyan – Python, React, AWS

Sufiyan is a backend-focused fullstack engineer with solid experience in Python, Node.js, and AWS, complemented by strong frontend skills in React. He has designed scalable workflow systems and demonstrated deep expertise in areas such as system design, scaling strategies, resumability, and database optimization. His technical strengths lie in backend architecture and problem-solving, while his frontend knowledge enables him to deliver complete end-to-end solutions. During evaluations, he showed thoughtful reasoning, strong awareness of system scalability, and the ability to balance technical trade-offs.

8 years of commercial experience in
Aerospace
AI
Analytics
Architecture
Fintech
Chatbots
Helpdesk software
SaaS
Main technologies
Python
4 years
React
5 years
AWS
3 years
Additional skills
Typescript
Next.js
Amazon EC2
Amazon S3
Lambda
Amazon RDS
CI/CD
Django
FastAPI
Cloudflare
Nest.js
Node.js
Flask
SQLAlchemy
MySQL
Spring
C#
Java
Knockout.js
Angular JS
Direct hire
Possible
Ready to get matched with vetted developers fast?
Let’s get started today!

Experience Highlights

Senior Full-stack Engineer
Apr 2022 - May 20253 years 1 month
Project Overview

A workflow engine and analytics platform for a leading e-commerce helpdesk. The system lets merchants design end-to-end workflows to automate how shopper issues are handled, while also tracking performance and billing usage. It was designed for scale, handling thousands of executions daily with accuracy and reliability.

Responsibilities:
  • Designed and implemented the workflow engine from scratch (frontend + backend).
  • Built a visual workflow editor using React and ReactFlow.
  • Implemented execution logic, monitoring, and error handling at scale.
  • Added analytics dashboards to measure workflow performance.
  • Designed and integrated billing logic to calculate billable vs. non-billable executions.
  • Optimized large-scale database operations (40M+ records) with proper indexing and cleanup strategies.
  • Collaborated closely with product and data teams to align features with business goals.
Project Tech stack:
React
Nest.js
Python
Node.js
Cloudflare
Full-stack Engineer
Oct 2022 - Apr 20235 months
Project Overview

A SaaS platform providing APIs and tools for space mission management. The product helps aerospace companies design, operate, and monitor satellites and launch systems through modular cloud services.

Responsibilities:
  • Built and maintained core frontend dashboards in React for mission data visualization.
  • Developed backend APIs in Node.js to support telemetry, events, and workflow execution.
  • Worked on authentication and role-based access for enterprise clients.
  • Improved CI/CD pipelines and testing practices for scalable deployments.
  • Collaborated closely with product teams and aerospace engineers to translate mission workflows into software.
Project Tech stack:
React
Node.js
Full-stack Engineer
May 2019 - Jul 20212 years 2 months
Project Overview

A financial analytics and research platform aggregating sell-side models, estimates, and company data. The platform supports asset managers, hedge funds, and banks with deeper insights and forecasting.

Responsibilities:
  • Designed and implemented interactive dashboards for financial model comparisons.
  • Optimized React components for performance in data-heavy views.
  • Integrated APIs for real-time data synchronization with backend services.
  • Worked with financial analysts to transform raw data into user-friendly visualizations.
  • Contributed to the internal UI component library for cross-team consistency.
Project Tech stack:
React
Python
Flask
SQLAlchemy
MySQL
Software Engineer
May 2017 - May 20192 years
Project Overview

A financial technology consultancy providing portfolio management and risk solutions to hedge funds and asset managers. The products range from trading workflows to compliance monitoring.

Responsibilities:
  • Developed trading and portfolio management modules for hedge fund clients.
  • Built and optimized SQL queries for large-scale financial datasets.
  • Worked on front-end features in AngularJS for compliance dashboards.
  • Collaborated directly with clients to gather requirements and deliver custom solutions.
  • Contributed to automation scripts, reducing manual reporting time for clients.
Project Tech stack:
Knockout.js
Java
Spring
C#

Education

2017
Computer Applications
Master's

Languages

French
Intermediate
Hindi
Advanced
English
Advanced

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