Mayank Singhal

Senior Software Engineer

Gurugram, Haryana, India3 yrs 6 mos experience

Highly Stable

Key Highlights

Architected event-driven systems processing 10M+ events/hour.
Reduced API latency by 87% using advanced caching strategies.
Mentored engineers, driving a 25% increase in feature velocity.

Stackforce AI infers this person is a Backend-heavy Fullstack Engineer in the Fintech industry.

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Skills

Core Skills

JavaDistributed SystemsMicroservicesCloud-native Mindset

Other Skills

MockitoSpring BootKafkaJava 21ELK StackJava CollectionsMySQLMongoDBAWSRedisHibernateApache KafkaReactElastic Stack (ELK)Representational State Transfer (REST)

About

I'm a Java Backend Engineer with 3+ years of experience designing and scaling distributed systems for Accenture (Client: American Express) — one of the world's most demanding financial platforms. My core strength is building backend systems that don't just work, they perform. I've architected event-driven pipelines processing 10M+ events/hour, reduced API latency by 87%, and scaled microservices to 15K+ requests/second under peak load. What I bring to a team: 🔹 Deep Java expertise — Java 8/21, Spring Boot, Spring Batch, Hibernate, JPA, Multithreading 🔹 Distributed systems thinking — Kafka, Redis, event-driven architecture, fault tolerance 🔹 Database & Caching — SQL (Oracle, PostgreSQL, MySQL), NoSQL (MongoDB), Redis 🔹 Cloud-native mindset — AWS (S3, KMS, IAM), Docker, Kubernetes, CI/CD via Jenkins 🔹 Ownership culture — I've led end-to-end delivery from design reviews to production, mentored 5 engineers, and driven a 25% increase in feature velocity Beyond code, I write about Java, microservices, and system design on Medium — because teaching is how I sharpen my own thinking. If you're building something that needs to scale reliably and fast — let's talk. 📩 mayanksinghal.dev@gmail.com 🔗 Portfolio: mayank-singhal-portfolio.vercel.app

Experience

3 yrs 6 mos

Total Experience

3 yrs 6 mos

Average Tenure

3 yrs 6 mos

Current Experience

Accenture

2 roles

Senior Software Engineer

Promoted

Jun 2025 – Present · 11 mos · Gurugram, Haryana, India · On-site

Leading backend engineering for one of the largest financial platforms in the world, owning critical distributed systems from design to production.
Architected an event-driven system using Spring Boot + Kafka processing 10M+ events/hr at 99.9% uptime
Redesigned concurrency using Java 21 Virtual Threads — cut resource overhead by 40%
Built centralized observability with ELK Stack, reducing MTTR by 40%
Mentored 5 engineers on SOLID, TDD, and design patterns — drove 25% faster feature delivery
Maintained 95%+ unit test coverage across all critical services

JavaMockitoDistributed Systems

Software Engineer

Oct 2022 – May 2025 · 2 yrs 7 mos · Gurugram, Haryana, India · On-site

Built and scaled secure backend services handling billions of transactions for American Express customers globally.
Designed RESTful microservices scaling to 15K+ requests/sec using Java, Spring Boot, MySQL, MongoDB, and AWS.
Slashed P99 latency from 150ms → 20ms (87% reduction) via Redis and Hibernate L2 caching
Built an AWS data pipeline (S3, KMS, IAM) reducing storage costs by 35%
Automated CI/CD across 50+ repositories, cutting release cycles by 80%
Built a React component library adopted across 3 enterprise apps, reducing UI dev time by 75%
Built reusable backend libraries in Java & JavaScript, accelerating development by 70% and ensuring consistent business logic across modules.
Developed secure auditable Maker-Checker workflows for financial processes, enabling 100% change tracking and ensuring process integrity.
Integrated Redis caching with distributed eviction policies and TTL strategies, lowering OracleDB load by 60% and reducing API latency from ~150ms to ~20ms.
Implemented OAuth 2.0 & JWT authentication with RBAC, enabling secure multi-role access and personalized user experiences.
Designed high-performance, multi-threaded apps using Java 21 Virtual Threads, boosting concurrency handling by 300% while reducing memory usage.
Delivered API-first microservices using Spring Boot, NestJS with 95%+ unit and functional test coverage using Junit and Mockito for reliable distributed communication.
Built frontend components using ReactJS, NextJS, implementing SSR (server-side rendering), code-splitting and caching strategies cutting load time by 40% and accelerating UI delivery by 80%.
Optimized complex Hibernate/JPA queries, improving API response time by 40% via tuning, indexing strategies and batching.

JavaJava CollectionsMicroservices

Addverb

Full Stack Developer

Jan 2022 – Jun 2022 · 5 mos · Noida, Uttar Pradesh, India · On-site

Built a warehouse management system (Spring Boot + React) handling 10M units/day
Implemented Kafka-driven real-time sync, containerized with Docker, deployed on AWS EKS

Apache KafkaSpring BootJavaMicroservices