Tejeshwar Kumar
Senior Software Engineer
Wroclaw
Summary
Senior Full Stack Developer with over 5+ years of experience, I possess expertise in Node.js, MongoDB, AWS, and front-end technologies like Angular. I have a proven track record of building scalable solutions across diverse domains, including E-commerce, Gaming, Web3, Blockchain, Finance, and Cryptocurrency.
Overview
7
7
years of professional experience
Work History
Senior Software Engineer
Ryanair Labs
Wroclaw
01.2024 - Current
- Successfully joined the payment team, managing and developing all payment-related features of the Ryanair app, ensuring seamless transactions for users.
- Enhanced and fixed bugs in the existing payment module, significantly improving its stability and performance.
- Developed and maintained robust end-to-end application tests, ensuring a bug-free and reliable user experience for all payment processes.
- Implemented new payment methods in the app, aligning with business requirements and enhancing payment flexibility for customers.
Senior Software Engineer
IXFI
12.2021 - 04.2023
- Achieved robust micro-service architecture using Node.js, Redis Caching, RabbitMQ Communication, Sockets Data, and Cron-jobs Scheduler.
- Developed a dynamic front-end module enabling seamless cryptocurrency conversion across 3rd party exchanges using Angular 12.
- Spearheaded IXFI Research Project, driving back-end architecture, API integration, database design, and real-time analytics for comprehensive cryptocurrency analysis.
- Developed cost-effective in-house solutions for charting using open-source chart libraries, saving company expenses on third-party alternatives.
- Optimized MongoDB queries for efficient data retrieval by migration, indexes, and effective aggregation queries for unstructured data.Implemented robust security measures for Node.js server using JWT tokens, API rate limiter, CORS protection, and protection against DDoS attacks, script injections, and man-in-the-middle attacks.
- Effectively managed and resolved performance issues on AWS EC2 instances and Nginx servers for enhanced server stability and performance.
- Conducted 50+ technical interviews for front-end and back-end roles, contributing to the recruitment process.
Project Lead Developer
Wiz Panda Techno Solution
02.2021 - 11.2021
- Worked on cooze which is a nocode/lowcode SaaS platform for app engagement through Hyper-Personalization, ML & AR.
- Development of image and AR-based composer to design and create in-app engagements in Angular 9.
- Development of client portal for integration of cooze SDK to client app, analytics, in-app engagements design, and scheduling.
- Worked on back-end and front-end of Grabble which is a news aggregator application. It compiles news feeds from various online sources for the user to customize and share on their platform.
- Created a WhatsApp bot using Electron to automate message sending to contact lists mapped with the locality of the news channel.
- Handled deployment and environment of the back-end, front-end, and database on EC2 servers of AWS via setting up CI-CD pipelines in GitLab.
Full Stack Web Developer
Cartificer
Kolkata
05.2019 - 06.2020
- Developed an app which shows instant quotation of 30+ services for each 300+ car model with order placing and tracking of services.
- Deployed in Amazon Web Service.Developed a server-side rendering app of Angular which helps in SEO of single page application.
Full Stack Web Developer
Gamux
India
01.2018 - 04.2019
- Built a fully automated platform for organizing tournaments on Gamux official website using MEAN stack and Firebase.
- Deployed on Google Cloud Platform.Developed a notification system using sockets to send instant notifications of tournaments updates and scores.
Education
Information Technology
Techno India Salt Lake
Science
D.A.V Public School NIT Jamshedpur
Skills
Angular
Nodejs
JavaScript
TypeScript
MongoDB
Tailwind
Firebase
AWS & GCP
JIRA (Agile)
VS Code & IntelliJ
CI/CD
Coding Standards
GIT
Postman
Linux
Nginx
electronjs
Ionic
cron jobs
RabbitMQ
Redis
InfluxDB
NestJS
Projects
Reedly, Developed a reader view web app which filters any article based website from noise, ads, offers, etc., www.reedly.io
Timeline
Senior Software Engineer
Ryanair Labs
01.2024 - Current
Senior Software Engineer
IXFI
12.2021 - 04.2023
Project Lead Developer
Wiz Panda Techno Solution
02.2021 - 11.2021
Full Stack Web Developer
Cartificer
05.2019 - 06.2020
Full Stack Web Developer
Gamux
01.2018 - 04.2019
Information Technology
Techno India Salt Lake
Science
D.A.V Public School NIT Jamshedpur