Upamanyu Deka

Software Engineer

Kuala Lumpur, Federal Territory of Kuala Lumpur, Malaysia9 yrs 6 mos experience

Key Highlights

  • Over 10 years of experience in frontend development.
  • Expert in building scalable web applications using ReactJS.
  • Proven track record in optimizing performance and security.
Stackforce AI infers this person is a Frontend Developer specializing in Fintech and Retail applications with a focus on performance and scalability.

Contact

Skills

Core Skills

ReactjsNext.jsJavascriptWeb Application Development

Other Skills

API IntegrationAgile MethodologiesAnalytical SkillsCSS3CommunicationCore Web VitalsEnglishFrontend SecurityGraphQLHTML5JSONMaterial-UIPerformance OptimizationProblem SolvingPublic Speaking

About

I’m a Senior Frontend Developer with over 10 years of experience building scalable, high-performance web applications using ReactJS, and Next.js. Over the years, I’ve worked with Fortune 1 retail giants and global financial institutions, delivering fast, secure, and responsive interfaces that power real-world products used by thousands of users daily. I specialize in: Architecting frontends for high-traffic, data-intensive platforms Optimizing performance, scalability, and Core Web Vitals Implementing secure, compliant, and maintainable UI solutions Leading cross-functional teams and collaborating with stakeholders to turn complex requirements into elegant, user-focused designs I believe great engineering is about simplicity: Solving complex problems with simple, thoughtful solutions, in code and in life.

Experience

Hf markets

Senior Software Engineer

Nov 2024Present · 1 yr 4 mos · Federal Territory of Kuala Lumpur, Malaysia · On-site

  • I work on a high-traffic, multi-regional web app serving thousands of users globally. My role focuses on delivering performant, scalable, and secure frontend solutions using modern web technologies.
  • Key Responsibilities:
  • Develop and optimize Next.js-based web applications, ensuring server-side rendering (SSR), static site generation (SSG), and dynamic routing for enhanced SEO and performance.
  • Implement cutting-edge frontend solutions such as dynamic data fetching with React Query, incremental static regeneration (ISR), and code-splitting to ensure minimal load times.
  • Ensure high performance under heavy traffic through techniques like caching strategies, lazy loading, image optimization, and bundle analysis.
  • Collaborate closely with backend and DevOps teams to design efficient API integrations and maintain smooth client-server communication with minimal latency.
  • Leverage TypeScript for type safety, maintainability, and scalability across complex UI modules.
  • Conduct performance audits and continuously optimize Core Web Vitals (LCP, CLS, INP) for superior user experience.
  • Ensure frontend security best practices, including XSS prevention, CSP enforcement, and secure cookie handling for authentication flows.
  • Drive code quality and consistency through peer reviews, linting, unit testing, and CI/CD pipeline integration.
  • Contribute to the continuous improvement of the design system and UI architecture, aligning with HFM’s evolving product requirements and visual identity.
  • Work closely with product owners, UX teams, and business stakeholders to translate complex financial workflows into intuitive, responsive interfaces.
Next.jsReactJSJavaScriptTypeScriptCore Web VitalsAPI Integration+2

Standard chartered

Senior Tech Lead

Jul 2023Nov 2024 · 1 yr 4 mos · Malaysia · On-site

  • Investment Products & Fixed Income Platforms
  • As a Frontend Developer, I contribute to two major initiatives:
  • The Investment Products application and the Fixed Income Platform, collaborating across business and technology teams to build secure, performant, and scalable enterprise-grade web interfaces.
  • Key Responsibilities:
  • Drive the analysis, estimation, and end-to-end development of user stories while ensuring alignment with business goals and compliance requirements.
  • Build and optimize responsive, component-driven UIs using ReactJS, AEM (Adobe Experience Manager), JavaScript (ES6+), HTML5, and CSS3, adhering to accessibility (WCAG) and security standards.
  • Integrate and consume RESTful APIs and GraphQL endpoints for dynamic data rendering, ensuring efficient client-server communication and error handling.
  • Implement performance optimization techniques including code splitting, lazy loading, memoization, and minimizing re-renders to achieve low LCP, CLS, and INP scores.
  • Enforce frontend security best practices such as input sanitization, secure cookie handling, CORS management, CSRF protection, and adherence to Content Security Policies (CSP).
  • Collaborate with product owners, BAs, QA engineers, and backend developers across both product lines to deliver consistent and maintainable UI solutions.
  • Participate in all Agile ceremonies — sprint planning, stand-ups, grooming, and retrospectives — maintaining clear visibility on progress, blockers, and dependencies.
  • Continuously monitor and improve application performance, scalability, and reliability, contributing to observability and error-tracking initiatives using modern tooling.
  • Work closely with key stakeholders to ensure product delivery aligns with the bank’s architectural guidelines, UX standards, and regulatory compliance mandates.
  • Vendor: HCL Tech
ReactJSJavaScriptHTML5CSS3RESTful APIsGraphQL+2

Wells fargo

Senior Software Engineer

Oct 2020Jul 2023 · 2 yrs 9 mos · Bengaluru, Karnataka, India · Hybrid

  • I specialized in building and enhancing features for Mortgage and Auto Loan modules within the Internet Banking Application, while also contributing to the Credit Score (FICO) platform. My work focused on delivering secure, high-performance, and maintainable frontend applications at enterprise scale.
  • Key Responsibilities:
  • Developed and maintained modular, reusable, and performant UI components using ReactJS, Redux, Redux-Saga, JavaScript (ES6+), HTML5, and CSS3.
  • Designed and implemented state management flows for complex loan and credit-related data, ensuring consistency and responsiveness across the application.
  • Integrated with RESTful APIs and financial data services, focusing on performance optimization, efficient data caching, and error resilience.
  • Wrote comprehensive unit and integration tests using Jest, React Testing Library, and Cucumber, achieving high code coverage and reliability.
  • Participated in story analysis, estimation, and sprint planning, driving full-cycle feature development from concept to deployment within Agile teams.
  • Applied performance optimization techniques including lazy loading, memoization, and bundle size reduction to improve load times and user experience.
  • Ensured adherence to security and compliance standards, including secure data handling, CORS policies, and XSS prevention across banking modules.
  • Contributed to automated functional testing pipelines and supported CI/CD processes to maintain high release quality and predictable delivery cadence.
  • Collaborated cross-functionally with product owners, QA teams, and backend developers to align technical solutions with business objectives.
  • Progressed from Software Engineer to Software Engineer II, reflecting consistent contributions to product stability, performance, and delivery excellence.
ReactJSReduxJavaScriptHTML5CSS3RESTful APIs+2

Mu sigma inc.

Apprentice Leader

Oct 2019Oct 2020 · 1 yr · bangalore

  • Walmart Sourcing & Procurement Platform
  • Led a team of 4 UI developers to enhance Walmart’s Sourcing and Procurement Application, delivering scalable, high-performance web interfaces that streamlined business operations across data-heavy workflows.
  • Key Achievements & Responsibilities:
  • Led end-to-end development of advanced UI modules featuring tabular and graphical data visualizations, improving user interaction by 30% and data processing efficiency by 20%.
  • Mentored and upskilled a team of 4 frontend developers, infusing modern JavaScript best practices and ReactJS concepts to improve team velocity and maintainability.
  • Played a pivotal role in technical decision-making, optimizing architecture and state management to align with Walmart’s enterprise standards.
  • Achieved 25% faster delivery timelines by driving Agile development practices, effective task prioritization, and efficient resource allocation.
  • Implemented performance enhancements including code-splitting, memoization, and lazy loading for large datasets.
  • Collaborated closely with product managers, UX designers, and backend teams to ensure seamless data integration and consistent UI/UX across modules.
  • Regularly evaluated developer performance metrics, providing feedback and conducting code reviews to ensure technical excellence and professional growth within the team.
  • Successfully managed sprint goals, delivery schedules, and stakeholder expectations in a fast-paced, startup-like environment.
JavaScriptReactJSMaterial-UITeam LeadershipPerformance Optimization

I-exceed technology solutions private limited

Senior Software Engineer

Feb 2019Jul 2019 · 5 mos · Bangalore

Web Application DevelopmentJavaScriptJSONSonar

Accenture

3 roles

Senior Software Engineer

Promoted

Dec 2017Jan 2019 · 1 yr 1 mo

Web Application DevelopmentJavaScriptCommunicationProblem SolvingAnalytical Skills

Software Engineer

Promoted

Dec 2015Nov 2017 · 1 yr 11 mos

Web Application Development

Associate Software Engineer

Nov 2014Nov 2015 · 1 yr

Web Application Development

Education

Jorhat Engineering College

Bachelor of Engineering (B.E.) (2010-2014) — Computer Science and Engineering

Jan 2010Jan 2014

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