Rajesh Kumar

Frontend Engineer

India6 yrs 9 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Expert in building scalable web applications.
Strong leadership in frontend development initiatives.
Passionate about continuous learning and knowledge sharing.

Stackforce AI infers this person is a Frontend Developer with expertise in SaaS and Fintech industries.

Contact

Skills

Core Skills

React.jsJavascriptAndroid Development

Other Skills

TypeScriptScssRTKRedux.jsMaterial-UIWebpackNXI18nWebSocketCascading Style Sheets (CSS)ESLintJestSASSReduxJava

About

I am a Senior Frontend Developer with a proven track record of building scalable, high-performance web applications and leading frontend initiatives from concept to production. I am passionate about continuous learning and actively share knowledge through technical blogs and community discussions. - Experienced in both individual contributor and lead roles, driving architecture, code quality, and delivery excellence. - Strong expertise in ReactJS, JavaScript, and TypeScript, with a focus on scalable frontend architecture and maintainable codebases. - Adept at bridging business and engineering through clear communication and collaborative problem-solving. - Committed to deep learning, clean code practices, and continuous self-improvement. Talks About: #ReactJS | #GenAI | #JavaScript | #TypeScript | #Monorepo | #Redux | #NodeJs | #FrontendTools | #Automation | #Tech

Experience

6 yrs 9 mos

Total Experience

2 yrs 3 mos

Average Tenure

3 yrs 1 mo

Current Experience

Sage

2 roles

Senior Engineer

Apr 2025 – Present · 1 yr 1 mo

Senior Product Engineer

Mar 2023 – Mar 2025 · 2 yrs

Contributing as an individual contributor to Sage Connect, a monorepo project managed with NX for efficient modular development.
Played a key role in building the Accounting Messaging system with features such as:
External Email Integration: Sending emails via Gmail, Outlook, and other services using REST APIs and SendGrid.
In-App Messaging: Real-time communication within the app using WebSocket.
Notifications: Implemented real-time updates to alert users of new messages using WebSocket.
Template-Based Messaging: Streamlined message creation with pre-drafted business content using Appsmith APIs.
Automated Messaging: Simplified repetitive tasks by automating message scheduling and sending.
Developed and optimized React Storybook, enabling faster development with a library of reusable components, ensuring UI consistency and improving collaboration with design teams.
Contributed to the localization of the product using react-i18n, making it accessible in multiple regions like the US, UK, Canada, and France, enhancing user experience with native language support.
Wrote and maintained Jest unit tests, ensuring code reliability, reducing bugs, and improving overall product quality by achieving higher test coverage and supporting seamless future development

JavaScriptTypeScriptScssRTKRedux.jsReact.js+8

Lockstep

Senior Product Engineer

Sep 2022 – Mar 2023 · 6 mos · Bengaluru, Karnataka, India

Contributed as an individual contributor to the two product named as INBOX and Self Service, a shared
workspace designed to help accounting teams collaborate seamlessly with customers and vendors.
Played a key role in delivering complex, scalable features, including:
Global Search: A robust search system for improved data accessibility.
Message Editor: Integrated Jodit for enhanced message draft & send capabilities.
Accounting Info Table Visualization: Developed a tabular data visualization feature with advanced
table
functionalities such as filtering, sorting, and pagination.
And many more key features.
Optimized and reduced product rendering and load times and increased performance up to 90%
with the help of developer tools and lighthouses etc.
Spearheaded the modernization of legacy class-based code by optimizing it into modular functional components, leveraging React hooks and utilities for better performance and maintainability.
Actively participated in code reviews and collaborated with product and UI/UX design teams to enhance the user experience and ensure high-quality deliverables
Contributed to scaling the product from 0 to 4 active customers, demonstrating tangible impact on adoption and user engagement

SASSJavaScriptTypeScriptReduxMaterial uiReact.js+1

Highradius

4 roles

Associate Software Engineer - II

Jul 2021 – Sep 2022 · 1 yr 2 mos

Lead of 15 team members and individual contributor.
Developing complex and scalable features of Application using ReactJs, Hmtl/CSS, Saga, thunk, Redux, material UI.
Revamped of existing code to optimize, modulor code with scalability.
Working as POD lead to ensure deliverables of my team alongside my individual work.
Active participation in code design, Products/Feature Design and design making.
has deliverabled many new features to the application.
Involved in interviews to identify and deliver new talent.

JavaJavaScriptSagaCascading Style Sheets (CSS)ESLintRedux.js+3

Associate Software Engineer - I

Sep 2020 – Jul 2021 · 10 mos

Developed complex and exciting new features of applications using ReactJs, redux, and Saga, Thunk middleware with axios.
Active participation in code review/best coding design implementation.
Worked as a POD lead and individual contributor to make sure team deliverables.
Was the part of new initiative team UI- Automation using Selenium/Java from scratch.
Created TPMG module to trained new interns within very less time to make them development ready.
Automated 80% features of a product with team member alongside my self working as POD Lead.
Took 3 new products to automate Automated 80% features with 3 new team and alongside my self working as an Super POD lead .
With the automation reduced the manual effort of QA.

JavaJavaScriptJMeterJenkinsCucumberMySQL+3

Intern

Jul 2019 – Sep 2020 · 1 yr 2 mos

Developed complex and scalable application using ReactJs, Html/Css, with State management library redux.
Active participation in product/coding design and writting proper test case.
Involved in management side on important decision making process as a POD lead.

JavaScriptSagaCascading Style Sheets (CSS)ESLintSQLRedux.js+3

Summer Intern

May 2019 – Jun 2019 · 1 mo

Embiot technologies

Intern

Oct 2018 – Mar 2019 · 5 mos · Bengaluru, Karnataka, India

Worked as an android developer intern where ,i had worked upon a Automated Bluetooth App which can control home lights with setup of Arduino and Android app.
My role was to develop an android app which will integrate with Arduino using bluetooth.

Android StudioKotlinFirebaseAndroid Development