Arghya Majumder

Software Engineer

Bengaluru, Karnataka, India12 yrs 10 mos experience

Key Highlights

Led architecture reviews and defined API contracts.
Reduced merchant onboarding time by 80%.
Improved feature delivery speed by 35%.

Stackforce AI infers this person is a Fintech-focused Fullstack Engineer with expertise in API contracts and frontend architecture.

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Skills

Core Skills

Api ContractsSdk ArchitectureFrontend Platform ArchitectureReactNode.jsPerformance EngineeringSalesforce ApisComponent ArchitectureEngineering LeadershipCollaboration ArchitectureAngularAngularjsWordpress

Other Skills

Dynamic Identity & Consent IntegrationConfig-Driven Application ModelMerchant Embed SDKPlatform Architecture & Merchant EnablementTechnical Leadership & StandardsREST APIsGraphQLServer-driven configurationJavaScriptModule FederationBackend Configuration ContractsConfig-Driven UI PlatformHeadless CMS & SSR ArchitecturePerformance OptimizationEngineering Standards

About

Staff-level full-stack engineer with 12+ years leading end-to-end system design for platform-level architectures across frontend and backend systems, from backend API contracts and config services to merchant embed SDKs and serverdriven UI infrastructure, at fintech scale (PayPal, JPMorgan Chase). Specialize in building platforms that remove friction between frontend and backend teams through server-driven config models, API contracts, and SDK architecture, consistently reducing release cycle times, cross-team dependencies, and merchant onboarding friction. Technical leader and RFC author: led architecture reviews, defined API contracts, and mentored engineering teams across distributed organizations.

Experience

12 yrs 10 mos

Total Experience

1 yr 10 mos

Average Tenure

1 yr 7 mos

Current Experience

Paypal

Senior Software Development Engineer

Oct 2024 – Present · 1 yr 7 mos · Bengaluru, Karnataka, India · Hybrid

Dynamic Identity & Consent Integration:
Built identity orchestration for the PayPal embed SDK, enabling profile switching, dynamic client_id resolution, and consent negotiation across distributed integrations via REST-to-GraphQL abstraction.
Identified a systemic session integrity gap in profile transition flows; drove a cross-organizational Inner Sourcing initiative to standardize token lifecycle and cookie invalidation, ensuring consistent security guarantees across SDK-integrated surfaces.
Config-Driven Application Model: Designed and led the re-architecture of the merchant UI platform into a config-first rendering architecture, shifting 70% of UI logic to server-driven configuration and reducing release iteration cycles by 50%—enabling product teams to ship UI changes without engineer involvement.
Merchant Embed SDK: Architected a modular JavaScript SDK enabling merchants to embed and manage their PayPal merchant portal as a native in-app experience within third-party commerce platforms (BigCommerce, Wix, Shopify);
leveraged module federation for runtime integration, and designed state isolation and extensibility layers integrated with backend configuration and orchestration APIs.
Platform Architecture & Merchant Enablement: Reduced merchant onboarding time by 80% (weeks to days) by designing backend configuration contracts and a metadata-driven component framework, defining the data models and API contracts that drive server-side UI generation across merchant platforms.
Technical Leadership & Standards: Led cross-team architecture reviews, authored platform RFCs and API contracts, and served as primary reviewer for complex SDK, platform infrastructure, and UI integrations.

Dynamic Identity & Consent IntegrationConfig-Driven Application ModelMerchant Embed SDKPlatform Architecture & Merchant EnablementTechnical Leadership & StandardsAPI Contracts+1

Jpmorgan chase & co.

Software Development Engineer III

Apr 2023 – Sep 2024 · 1 yr 5 mos · Bengaluru, Karnataka, India · Hybrid

Config-Driven UI Platform: Designed and owned the metadata-driven UI composition architecture using atomic React components and AEM configuration APIs, improving feature delivery speed by 35% and reducing cross-team frontend dependencies by 60%.
Headless CMS & SSR Architecture: Architected the server rendering layer using Node.js, integrating Headless AEM GraphQL and REST APIs to power SPA and SSR banking portals with dynamic page composition, personalised content delivery, and audience-targeted offers, rendering different views per user segment based on profile, eligibility, and behavioural context, contributing to a 20% increase in conversion rates.
Performance Optimization: Optimized rendering pipelines, bundle splitting, and API orchestration across CSR and SSR flows, improving Lighthouse scores from 72 to 91, reducing Time-to-First-Byte across server-rendered banking portals, and directly increasing daily active visitors at scale.
Engineering Standards: Defined frontend architecture guidelines via RFCs; implemented CI pipelines achieving 85%+ automated test coverage, enforcing accessibility and security standards across the platform.

Config-Driven UI PlatformHeadless CMS & SSR ArchitecturePerformance OptimizationEngineering StandardsReactNode.js

Salesforce

Senior Technical Consultant

Jul 2022 – Apr 2023 · 9 mos · Bengaluru, Karnataka, India · Hybrid

Delivered high-traffic commerce storefront experiences (PLP/PDP) using React and Salesforce LWC; implemented caching and lazy loading strategies improving Time-to-Interactive by ∼30%.
Reusable Component Architecture: Designed modular UI component library aligned with Salesforce design patterns, enabling rapid customization across multiple commerce deployments and reducing per-client frontend setup time.
Backend Integration: Integrated frontend applications with Salesforce APIs to orchestrate data flows, error handling, and performance-optimized commerce experiences.

High-traffic commerce storefront experiencesReusable Component ArchitectureBackend IntegrationReactSalesforce APIs

Tata consultancy services

Assistant Consultant

Jun 2017 – Jul 2022 · 5 yrs 1 mo

Frontend Modernization: Led migration of legacy ExtJS applications to React across 3 enterprise products; introduced reusable component architecture improving performance by 32% and user engagement by 47%.
Engineering Leadership: Built and mentored a 7-engineer frontend team; introduced RFC-driven design review process adopted across the department, reducing rework and aligning teams on technical direction before implementation.
Collaborative Document Platform: Designed and delivered an enterprise document authoring system supporting multi-author editing, threaded comments, approval workflows, and audit-compliant version history, defining the data model, collaboration architecture, and backend service contracts from the ground up.
Hadoop Query Builder: Developed a UI-driven query builder backed by a Node.js service layer enabling analysts to construct and reuse complex Hadoop queries without writing raw query syntax.

Frontend ModernizationEngineering LeadershipCollaborative Document PlatformHadoop Query BuilderReact

Cognizant

Programmer Analyst

Mar 2015 – May 2017 · 2 yrs 2 mos · Greater Kolkata Area

Modernized legacy codebases to Angular 2+ and integrated WCAG accessibility standards.
Collaborated with backend teams to integrate REST APIs, handling data binding, validation, and error states in enterprise web applications.

Modernized legacy codebasesCollaborated with backend teamsAngular

Itc infotech

IT Executive

Sep 2014 – Mar 2015 · 6 mos · Bengaluru, Karnataka, India

Developed scalable e-commerce UIs using AngularJS and optimized defect tracking workflows in JIRA.
Worked closely with QA and business stakeholders to triage production issues, implement fixes, and improve release
stability.

Developed scalable e-commerce UIsOptimized defect tracking workflowsAngularJS

Capital numbers infotech pvt. ltd.

Frontend Developer

May 2013 – Sep 2014 · 1 yr 4 mos · sec v kolkata

Developed responsive websites using WordPress & Angular, customizing themes and templates to meet client-specific design and functionality requirements.
Focused on SEO optimization, built custom WordPress plugins, and integrated Shopify-based e-commerce functionality to convert content-driven sites into fully functional online stores.

Developed responsive websitesFocused on SEO optimizationWordPress