Mayank Khandelwal

VP of Engineering

India7 yrs 9 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Led high-performance teams in gaming applications.
Achieved 60% reduction in app crashes.
Built scalable products for 100M+ users.

Stackforce AI infers this person is a Backend-heavy Fullstack Engineer with expertise in Gaming and E-commerce.

Contact

Skills

Core Skills

Technical Project LeadershipEngineeringFlutterSoftware DevelopmentAndroid DevelopmentAutomation Testing

Other Skills

Agile MethodologiesAnalytical SkillsAndroid SDKCascading Style Sheets (CSS)CommunicationComputer ScienceDartDesign PatternsEnglishFigma (Software)FirebaseGitGo (Programming Language)HTMLJSON

About

I’m a Technical Lead & Software Engineer with 7+ years of experience building scalable products that have reached 100M+ users across gaming, healthcare, logistics, travel and e-commerce. My core expertise lies in Java, Flutter, Android and Golang, but what really drives me is solving large-scale engineering challenges - from optimising system performance to building reliable backend systems that scale. I love the intersection of product impact and engineering depth: making apps faster, leaner and more engaging while directly moving business metrics. At Flutter Entertainment (Junglee Games), I’ve led high-performance teams, mentored engineers and shipped critical features in gaming applications serving millions of users daily. Before that, at Grappus, I worked hands-on as an SDE-1, where I built and optimized apps for companies like Delhivery, Grab, ShareKaro, Astellas and more. These projects have sharpened my foundation in cross-platform development, system design and performance tuning. Across roles, the common thread has been scaling products, leading teams and aligning technology with business growth - whether that’s reducing logistics errors, speeding up file transfers or boosting daily active users. I thrive on creating systems that don’t just work, but scale gracefully and deliver real impact.

Experience

Flutter entertainment

3 roles

Technical Lead

Promoted

Jan 2025 – Present · 1 yr 2 mos · Hybrid

Lead multiple high-impact projects across Referrals, KYC and Reactivations, driving up to 60%
better user conversion and reactivating a large base of dormant users.
Drive compliance and security initiatives, ensuring alignment with evolving government regulations
and fair play for a 100M+ user base.
Lead architecture and system design decisions across backend and frontend, ensuring scalability,
security and resilience. It resulted in reducing production bugs by 40% and latency by 30% through
best practices and rigorous code reviews.
Partner with product and business teams to align engineering initiatives with growth goals, directly
influencing user retention and revenue impact.

backendTechnical Project LeadershipLeadershipAgile MethodologiesSoftware DevelopmentEngineering

Software Development Engineer - III

Dec 2023 – Jan 2025 · 1 yr 1 mo · Hybrid

Spearheaded ANR and crash reduction initiatives on the flagship Junglee Rummy app, revamping
major modules, rewriting native dependencies, optimising utilities, building internal tools and
automating anomaly detection scripts. The efforts resulted in a 60% reduction in app crashes, 70%
lower ANRs and 30% reduction in memory & CPU usage, earning recognition from leadership for
driving app stability at scale.
Automated CI/CD pipelines using Bitbucket & Shorebird, enabling OTA updates, cutting hotfix &
compliance release time by 3-4 days and reducing build times by 50%.
Achieved 35% reduction in marketing & ASO costs by streamlining the Flutter-Unity bridge and
cutting app size by 30%, enhancing app efficiency and user engagement.
Enhanced network efficiency and real-time responsiveness by optimizing WebSockets and network
layer using concurrent processing with Isolates, resulting in 30% higher FPS and smoother app
performance, elevating user experience across all segments of user devices.

FlutterGo (Programming Language)Software DevelopmentAgile Methodologies

SDE II Mobile App Developer

Dec 2020 – Dec 2023 · 3 yrs · Hybrid

Led a high-performance team in developing and maintaining the Junglee Rummy app, driving
100%+ improvements in key product metrics and ensuring reliable delivery of new features.
Managed a 100M+ user base by architecting 5 cross-platform applications with a shared codebase
for Android and iOS, ensuring high availability, scalability and seamless UX.
Delivered core modules including payments, authentication, withdrawals, KYC, referrals and
profile, ensuring secure and efficient operations.
Integrated major third-party solutions (Juspay, Razorpay, Paynimo, Branch, CleverTap, Haptik
Chatbot), accelerating feature rollout and enabling personalized user engagement.
Collaborated with cross-functional teams (product, QA, marketing) to deliver timely releases at
scale, directly improving user retention and revenue growth.

FlutterAndroid DevelopmentSoftware DevelopmentAgile Methodologies

Grappus

Android & Flutter Developer

Apr 2019 – Dec 2020 · 1 yr 8 mos · Gurgaon, Haryana, India · On-site

Led the development of a shipment tracking app for Delhivery using Flutter, optimizing logistics operations with cross-platform technology solutions.
Contributed to the popular file-sharing platform ShareKaro by leveraging innovative Bluetooth and WiFi channels for seamless transfers, enhancing the overall speed of file sharing between users.
Created a merchant app for Grab, establishing Bluetooth interactions with Sunmi printers, which helped improve business efficiency.
Revamped MessengerGo with over 60M+ downloads and significantly improved user engagement by leading the integration of Mozilla Android Components for the Android Browser.
Directed healthcare app creation for top Japanese pharmaceutical companies Astellas and Aspire.

FlutterAndroid DevelopmentSoftware Development

Globallogic

Software Engineer

Jul 2018 – Apr 2019 · 9 mos · Noida Area, India

Implemented and managed bash scripts for client-side database Automation Testing for a major US-based database company.
Automated and optimised test cases to reduce running duration by 12%.
Helped increase code coverage by writing better test cases for new and existing features. Reported unusual exceptions and possible leaks to prevent probable pitfalls.

bash scriptingAutomation Testing

Fotonicia

Android Development Intern

Jan 2018 – Apr 2018 · 3 mos · New Delhi Area, India

Worked on revamping the Fotonicia app for better user experience using material design and smooth UX.
Developed features for real-time image editing, efficient cropping, filters and final product previews.
Helped team brainstorm on new features, focusing on empathy and common user journeys.
Worked partially on-site for sales and marketing, which helped getting better user feedback for app and more leads for the product.

Android DevelopmentMaterial Design