Ketan saresa

Full Stack Engineer

Dubai, United Arab Emirates9 yrs 9 mos experience
Most Likely To SwitchAI Enabled

Key Highlights

  • Architected scalable systems for 7M+ users
  • Led Stripe and Plaid payment integrations
  • Reduced chargebacks by 40% with fraud prevention
Stackforce AI infers this person is a Backend Engineer specializing in Fintech and SaaS architectures.

Contact

Skills

Core Skills

React.jsNode.jsRestful ApisRest ApisMongodb

Other Skills

API developmentAWSAWS LambdaAngular JSAngularJSApple authenticationCC++Client communicationCode ReviewCommunicationDatabase managementDockerDreamweaverEclipse

About

I’m a Senior Backend Engineer with 8+ years of experience architecting scalable, resilient systems across fintech, e-commerce, and healthcare. I specialize in building secure, high-performance backend infrastructures using Node.js, NestJS, TypeScript, and PostgreSQL, with a focus on Stripe payments, real-time systems, and microservices. My work has powered platforms serving 7M+ users and $100K+ in MRR. I have led Stripe and Plaid payment integrations, built fraud prevention systems that reduced chargebacks by 40%, and delivered microservices optimized for scale and observability. Notable projects: 🚀 Scaled platforms to 7M+ users with real-time media & subscription infrastructure 💳 Architected Stripe-based payments system and keeping real time balance tracking 🧠 Built AI-driven appointment scheduling using WebSockets & Twilio I'm passionate about delivering elegant backend systems that drive business value and user trust. Currently exploring opportunities where I can help scale fintech, payments, or B2B SaaS platforms as a core backend or platform engineer.

Experience

Rapchat

3 roles

Full Stack Engineer

Feb 2021Present · 5 yrs 1 mo · Remote

  • Rapchat is a mobile and web application that empowers users to create music and raps effortlessly using a built-in studio directly from their smartphones.
  • Rapchat User has access to over 200k+ free beats and a user base of more than 7M, the application boasts an impressive 500k+ monthly active users.
  • In my role as a Full Stack Engineer, I played a crucial part in improving our website's functionality and user experience. On the front end, I used my skills in React.js and Vue.js to give the user interface a fresh look, adding new features and diligently fixing any bugs to ensure smooth browsing.
  • Additionally, I led the development of vital backend systems. This included creating a robust User Reporting system to make it easy for users to report issues. I also enhanced security and convenience by implementing Google and Apple authentication for user logins, and I streamlined user profile management for better control.
  • Moreover, I tackled the challenge of making the website more resilient against spam and inappropriate content. This involved building a comprehensive Spam Restrictions and Prevention system, setting up an Email Verification system to confirm user identities, and automating the flagging of user-generated content that might be spammy, NSFW, or against image guidelines. These efforts collectively made the online environment safer and more user-friendly.
React.jsVue.jsNode.jsUser Reporting systemGoogle authenticationApple authentication+2

Sr. Backend Engineer

Promoted

Feb 2019Feb 2021 · 2 yrs · Remote

  • I'm responsible for overseeing the backend infrastructure of our application. This includes the development of efficient and scalable RESTful APIs, server configuration, and database design to ensure optimal performance.
  • A significant aspect of my work involves optimizing the performance of our backend system. This entails creating comprehensive test cases, implementing load balancing techniques, and configuring monitoring tools like Datadog and New Relic APM. These efforts are aimed at closely analyzing the performance of our APIs and making necessary improvements to enhance efficiency.
  • Furthermore, I manage user subscriptions by utilizing third-party services such as RevenueCat. Additionally, I oversee user activities and notifications through Onesignal to ensure a seamless user experience.
  • My role encompasses a wide range of technologies, including Node.js, Express.js, React.js, MongoDB, Docker, and Jenkins. Notably, I've played a pivotal role in implementing Continuous Integration/Continuous Deployment (CI/CD) practices with Jenkins.
  • Additionally, I've been actively involved in designing and implementing new features, enhancements, and resolving any encountered bugs.
RESTful APIsNode.jsExpress.jsMongoDBDockerJenkins+4

Back End Engineer

Nov 2017Feb 2019 · 1 yr 3 mos · Remote

  • In my role as a Backend Engineer, my primary focus is on the development and maintenance of REST APIs. This includes creating new APIs, refactoring existing ones to enhance performance, and implementing new features while diligently addressing any reported bugs.
  • I'm also dedicated to improving the efficiency of our MongoDB collections. This involves creating necessary indexes and optimizing queries to boost overall performance.
  • Additionally, I've been involved in a significant server migration project, moving our infrastructure from Azure to AWS. As part of this, I've set up AWS virtual machines (VMs) to ensure a smooth transition.
  • Documentation is a key aspect of my work, as I ensure that our APIs are well-documented, and I create Postman collections to facilitate testing and usage. Also work on the overall system documentation for easy onboarding.
  • Furthermore, I manage our code repositories and have configured Continuous Integration/Continuous Deployment (CI/CD) pipelines using Jenkins, streamlining our development and deployment processes for increased efficiency.
REST APIsMongoDBAWSJenkinsServer migrationPostman

Third rock techkno

MERN Stack Developer

Jun 2016Nov 2017 · 1 yr 5 mos · Ahmedabad Area, India

  • I excel at managing a broad spectrum of tasks encompassing both backend and frontend aspects of multiple projects. My role not only involves technical proficiency but also effective communication with clients. I adeptly absorb project requirements during client meetings, strategically plan and execute projects, all while ensuring their seamless delivery within defined timelines.
  • My experience extends beyond technical prowess; I have also taken on leadership roles, acting as a Project Manager and Team Leader. This multifaceted experience has equipped me with the skills necessary to orchestrate successful project outcomes.
MERN StackClient communicationProject management

Solulab inc

Node.JS Developer

Jan 2016Jun 2016 · 5 mos · Ahmedabad Area, India

  • I began my journey as an intern specializing in Node.js, where I received comprehensive training and actively contributed to various in-house projects.
  • My dedication and exceptional performance earned me the privilege of working on a live project.
  • In this capacity, I was responsible for the development of APIs and the management of the project's database.
Node.jsAPI developmentDatabase management

Education

Dhirubhai Ambani University

Master in science and Information Technology (MSC-IT) — Information Technology

Jan 2014Jan 2016

Gujarat University

Bachelor's degree — Information Technology

Jan 2011Jan 2014

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