Mayank Gupta

Gojek | Consultant – Merchant Growth | Mar 2025 – Present

• Learned Elixir from scratch to design and deliver a complex Free Trial flow backend API within 3 weeks.
• Engineered the complex multi-state logic for the Free Trial engine to support dynamic merchant states.
• Partnered daily with mobile engineers to define API payloads and guarantee an effortless frontend integration.
• Developed reporting backend APIs for diverse merchant promotion flows on the GoBiz mobile app.
• Designed the initial technical flow and architected backend APIs for a greenfield SKU promotions platform.
• Engineered robust background workers in Go/Elixir to asynchronously process high-volume merchant promotions.

HDFC Bank | Consultant - Mobile Banking | Apr 2023 – Mar 2025

• Collaborated on re-architecting the core authentication system during the platform rewrite, transitioning the legacy mobile login flow into a modern, secure, and modular architecture.
• Designed and built secure authentication and profile APIs using Go.
• Maintained codebases for multiple microservices by continual refactoring while ensuring the unit test coverage never dropped below 90%.
• Co-developed a secure, two-step QR-code and mobile token authentication platform called Kavach to mitigate phishing risks, protecting high-volume digital banking transactions against unauthorized access.

• Designed and deployed robust Clojure-based Web APIs for internal microservices and external public consumers, ensuring secure and predictable data delivery.
• Partnered with engineering squads to diagnose performance bottlenecks, implementing optimizations that enhanced system stability under peak traffic loads.
• Spearheaded technical research initiatives on emerging tools and architectures, translating complex findings into actionable insights for leadership.
• Produced clear system architecture diagrams and API schemas, improving engineering velocity and reducing documentation gaps across teams.
• Mentored engineering interns on clean code paradigms and modern SDLC methodologies, accelerating their code-review approval velocity and successfully converting them into full-time roles.
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• Architected and led the development of a highly scalable microservices ecosystem, significantly boosting overall system performance and operational reliability.
• Accelerated team velocity and engineering growth by mentoring junior developers and establishing standardized, modern software design best practices.
• Bootstrapped the initial analytics dashboard iteration, delivering critical real-time incident metrics to improve stakeholder visibility and response times.
• Championed high code quality standards by spearheading rigorous code reviews, ensuring codebase maintainability, and reducing post-release bugs.
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• Refactored and re-architected a legacy vehicle tracking platform using Go, improving system scalability and availability to handle higher concurrent traffic.
• Designed and deployed a developer integration system, accelerating the onboarding pipeline for third-party providers.
• Optimized the real-time tracking experience for customers, resulting in lower latency updates and cleaner map rendering.
• Ensured high system reliability across dozens of microservices by debugging complex production issues during active on-call rotations.
• Authored clean, maintainable, and highly performant scripts and services using a diverse technology stack (Go, Java, PHP, Python).

• Engineered high-performance Python/Flask backend APIs to enable seamless, low-latency communication with the core machine learning platform.
• Collaborated via pair programming with cross-functional engineers to accelerate API integrations and isolate complex production bugs.
• Mentored junior developers and interns on software engineering best practices, Agile workflows, and Test-Driven Development (TDD).
• Architected and deployed automated CI/CD pipelines using Jenkins on AWS, streamlining deployment frequency and reducing manual release overhead.
• Designed and established the core API testing framework from scratch, raising test coverage standards across the engineering department.

• Consulted with cross-functional client teams to diagnose testing bottlenecks, accelerating development cycles and shifting quality assurance left.
• Co-developed the Optimus mobile automation framework, streamlining test authoring for developers and QA engineers to improve overall test coverage.
• Architected a scalable test automation suite using Java, Appium, and Rest Assured for Gojek (among other clients), validating critical functional and REST API workflows.