![Uman Mushtaq](https://jobicy.com/react/themes/app/images/avatar.jpg) Uman Mushtaq # Backend Engineer Actively looking · Member since 12 Jun 2026 [Message](https://jobicy.com/dashboard-page.md) ShareLocationParis, FranceDesired salaryUnspecifiedWork preferenceRemote Only / Full Time, Contract, FreelanceExperience levelMid * [Overview](#overview) * [Portfolio 0](#portfolio) * [Services 0](#services) ## About Professional summaryI am a backend engineer with 4 years of production experience building microservices for fintech and SaaS products. I specialize in Node.js, NestJS, and TypeScript, and I have hands-on experience designing event-driven systems, distributed workflows, and scalable APIs. My work has included building microservices with Kafka and RabbitMQ, applying Clean Architecture and Domain-Driven Design, and implementing patterns such as Saga-based transactions, caching, and distributed locks. I have also worked extensively with PostgreSQL, MongoDB, Redis, Docker, GitHub Actions, and cloud/deployment tooling to deliver reliable production systems. I am currently based in Paris, France, and I am immediately available. I do not require overseas sponsorship and I am open to opportunities that match my backend engineering background. I enjoy working on complex backend problems, improving system reliability, and shipping maintainable software in collaborative engineering teams. Notice period: Immediately available ## Skills 37 capabilities[Agile](https://jobicy.com/talent/agile.md)[API Development](https://jobicy.com/talent/api-development.md)[Authentication](https://jobicy.com/talent/authentication.md)[Authorization](https://jobicy.com/talent/authorization.md)[AWS](https://jobicy.com/talent/aws.md)[Blockchain](https://jobicy.com/talent/blockchain.md)[Caching](https://jobicy.com/talent/caching.md)[CI CD](https://jobicy.com/talent/ci-cd.md)[Distributed Systems](https://jobicy.com/talent/distributed-systems.md)[Docker](https://jobicy.com/talent/docker.md)[Domain Driven Design](https://jobicy.com/talent/domain-driven-design.md)[Event Driven Architecture](https://jobicy.com/talent/event-driven-architecture.md)[Git](https://jobicy.com/talent/git.md)[GitHub Actions](https://jobicy.com/talent/github-actions.md)[JavaScript](https://jobicy.com/talent/javascript.md)[Jest](https://jobicy.com/talent/jest.md)[JWT](https://jobicy.com/talent/jwt.md)[Kafka](https://jobicy.com/talent/kafka.md)[KYC](https://jobicy.com/talent/kyc.md)[Microservices](https://jobicy.com/talent/microservices.md)[MongoDB](https://jobicy.com/talent/mongodb.md)[Mongoose](https://jobicy.com/talent/mongoose.md)[NestJS](https://jobicy.com/talent/nestjs.md)[OAUTH2](https://jobicy.com/talent/oauth2.md)[Payment Systems](https://jobicy.com/talent/payment-systems.md)[Performance Optimization](https://jobicy.com/talent/performance-optimization.md)[PostgreSQL](https://jobicy.com/talent/postgresql.md)[Prisma](https://jobicy.com/talent/prisma.md)[RabbitMQ](https://jobicy.com/talent/rabbitmq.md)[React](https://jobicy.com/talent/react.md)[Redis](https://jobicy.com/talent/redis.md)[REST APIs](https://jobicy.com/talent/rest-apis.md)[Scrum](https://jobicy.com/talent/scrum.md)[Sequelize](https://jobicy.com/talent/sequelize.md)[Testing](https://jobicy.com/talent/testing.md)[TypeORM](https://jobicy.com/talent/typeorm.md)[TypeScript](https://jobicy.com/talent/typescript.md) ## Tech stack & tools Working toolkit ### Application Hosting [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/firebase/firebase-original.svg) Firebase](https://jobicy.com/talent?tool=firebase.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/redis/redis-original.svg) Redis](https://jobicy.com/talent?tool=redis.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/supabase/supabase-original.svg) Supabase](https://jobicy.com/talent?tool=supabase.md) ### Application Utilities [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/twilio/twilio-original.svg) Twilio](https://jobicy.com/talent?tool=twilio.md) ### Data Stores [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/mongodb/mongodb-original.svg) MongoDB](https://jobicy.com/talent?tool=mongodb.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/postgresql/postgresql-original.svg) PostgreSQL](https://jobicy.com/talent?tool=postgresql.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/sequelize/sequelize-original.svg) Sequelize](https://jobicy.com/talent?tool=sequelize.md) ### Development [![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/docker/docker-original.svg) Docker](https://jobicy.com/talent?tool=docker.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/git/git-original.svg) Git](https://jobicy.com/talent?tool=git.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/jest/jest-original.svg) Jest](https://jobicy.com/talent?tool=jest.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/mongoose/mongoose-original.svg) Mongoose](https://jobicy.com/talent?tool=mongoose.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/prisma/prisma-original.svg) Prisma](https://jobicy.com/talent?tool=prisma.md)[![Image](https://cdn.jsdelivr.net/gh/devicons/devicon@master/icons/rabbitmq/rabbitmq-original.svg) RabbitMQ](https://jobicy.com/talent?tool=rabbitmq.md) ## Experience Career history ### Freelance Backend Engineer · Self-employed Aug 2025 – PresentI work as a freelance backend engineer delivering backend development missions for fintech and SaaS clients using Node.js, NestJS, and TypeScript. I designed and built NexusPay, an event-driven fintech platform with 7 NestJS microservices communicating over Kafka and RabbitMQ. The system applies Clean Architecture and Domain-Driven Design to support maintainability and scalability. I also built and maintain jobsScrapper, an AI-powered job aggregation platform that integrates Gemini AI for scoring and relevance matching across 20+ European job boards. In addition, I manage a fully Dockerized infrastructure with GitHub Actions CI/CD, Supabase PostgreSQL, Upstash Redis, and Render. ### SOFTWARE ENGINEER · OptimusFox Oct 2021 – Jul 2024I built and delivered 4 production microservices across fintech, crypto, and SaaS products using NestJS, TypeScript, and Express.js. My work covered payment flows, wallet management, and trading platform backends, and I integrated third-party services such as Stripe, PayPal, Auth0, Firebase, Twilio, and SendGrid. I also redesigned PostgreSQL and MongoDB schemas to resolve data integrity issues, built GitHub Actions CI/CD pipelines from scratch, and Dockerized backend services with multi-stage builds and environment-specific configurations. ### Node.js Developer · Teams.pk Jun 2020 – Sep 2021I built and maintained REST APIs for a B2B SaaS platform using Node.js, TypeScript, and Express.js, supporting around 50 business clients. I helped structure backend codebases from early-stage features to stable production systems and established clean architecture patterns adopted by the team. I also debugged and resolved performance bottlenecks across core API modules, improving response times across the platform. ## Education Learning history ### Paris School of Business Oct 2024 – Jul 2025Master, Business Administration Master's studies in Business Administration completed in Paris. ### University of Central Punjab Oct 2015 – Aug 2019Bachelor, Computer Science Bachelor's degree in Computer Science. 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