VAIBHAV KUMAR TYAGI
Noida
Summary
Engineering Manager | 13 Years | Fintech Scale | Java, Spring Boot, Shell Scripting — Hands-On by Choice
Deliberately technical EM: codes in Java/Spring Boot, scripts in shell, and profiles Linux JVMs for CPU/memory anomalies. Migrated Paytm's stack Spring 4→6 with zero downtime; built 500K TPS Kafka ingestion; cut reporting 18h→6h. Validate every performance fix in local labs before production. Lead 30 engineers: annual hikes, performance calibrations, growth plans. Currently shipping an MCP server (Jira/Bitbucket + Claude Code) to accelerate dev productivity.
Overview
17
17
years of professional experience
Work History
Engineering Manager — Wallet Engineering
Paytm Payments Bank
Noida, India
03.2022 - Current
- Directed comprehensive engineering initiatives for Paytm's RBI-regulated PPI wallet, ensuring seamless functionality across high-volume payment transactions.
- Led a cross-functional team of 30 engineers, encompassing backend, SRE, and QA disciplines, to drive project success.
- Achieved platform modernization from Spring 4 to 6 through effective project management. Mitigated security risks and resolved deprecated API issues within the wallet stack.
- Guided teams in establishing platform stability and making architectural choices. Led discussions on architecture decisions to enhance platform performance.
- Directed efforts to resolve database performance issues, implementing solutions that resulted in sustained uptime of 99.9% and elimination of job failures.
- Re-engineered data access layer utilizing CQRS to distinctly separate command (wallet mutations) and query (balance reads history) paths, enhancing system performance.
- Optimized balance-check API to efficiently manage approximately 20,000 transactions per second with a 30 ms p95 latency.
- Designed and implemented idempotent, retryable transitions within state machine, ensuring each step of wallet opening journey is audit-logged for regulatory compliance and traceability.
- Refined Kafka eventing process to confirm zero data differences during reconciliation, maintaining wallet state integrity.
- Implemented strategic changes in pipeline design and job orchestration, achieving a significant reduction in regulatory roll reporting processing time to 6 hours while maintaining 100% availability.
- Add-money failure rate: 3% → 1% via real-time low-balance triggers replacing midnight batch jobs
- Achieved significant improvements in incident resolution by leading root cause analyses and corrective action initiatives. Implemented a service level objective and error budget framework, resulting in enhanced operational efficiency. Strengthened team performance through the establishment of a structured on-call discipline.
- Led initiatives to evaluate and promote the adoption of AI coding assistants, such as Cursor, GitHub Copilot, and Claude Code. Oversaw the construction of an in-house MCP server to enhance integration between Jira and Bitbucket.
- Led cross-functional teams to enhance payment processing efficiency and accuracy.
- Developed strategic roadmaps for product development in digital banking solutions.
- Optimized resource allocation, effectively managing budgets and manpower for multiple simultaneous projects.
Senior Technical Architect
mCarbon Tech Innovation / Nuance India
05.2015 - 04.2022
- Designed and launched a high-capacity Kafka ingestion system for H3I (Indonesia), integrating UDP datagram receivers with a producer pipeline to achieve at-least-once delivery guarantees, successfully operating bug-free from day one across seven premium servers.
- Developed and optimized bulk push SMS platform leveraging Spring Boot, ensuring reliable campaign delivery with dynamic routing and failover capabilities across Airtel and Vodafone carriers.
- Enhanced platform reliability by systematically profiling root causes and implementing JDBC connection pool tuning and circuit-breaker patterns, achieving a significant reduction in end-to-end failure rate from 25% to 4%.
- Delivered MCA platform modules for VinaPhone (Vietnam); designed Kafka-based messaging pipelines for asynchronous notifications and speech-to-text SMS flows; standardized API security and AES/RSA encryption libraries across services
- Facilitated the adoption of platformization patterns, including Spring Boot and Maven build standardization, to enhance development efficiency within a 17-engineer team across multiple products.
- Transformed product modules into adaptable platform components, streamlining deployment across multiple markets with minimal customization.
- Architected scalable cloud solutions enhancing system performance and reliability.
- Led cross-functional teams in implementing innovative software architectures and frameworks.
Lead Engineer
Mahindra Comviva Technologies
Noida, India
12.2010 - 04.2015
- Managed user state transitions and song-selection pipeline for CRBT/HelloTune platform, optimizing activation, deactivation, grace periods, and renewals for nationwide telecom services.
- Led initiatives to architect sub-millisecond hot-path optimizations by implementing an in-memory song metadata cache, effectively reducing database interactions in critical song-fetch processes. Oversaw deployment of a centralized metadata feeder, achieving synchronization delays reduction from roughly 24 hours to near real-time across multiple telecom circles.
- Created a persistent HTTP connection pooling library with adaptive retry mechanisms, significantly lowering HTTP error rates from approximately 9% to 0.1%.
- Developed TCP-based inter-process communication (IPC) modules in C, integrating JNI bridges into Java service layer.
- Implemented design patterns, including state, strategy, observer, and factory, across subscription and lifecycle modules to enhance system architecture. Led internal training initiatives, equipping engineering teams with insights on design patterns and industry best practices.
- Received accolades as top talent for two consecutive years. Secured first place in hackathon (Battle of Code) for two consecutive years.
- Developed and maintained architecture frameworks, enhancing system performance and reliability.
Associate Software Engineer
mCarbon Tech Innovation
08.2009 - 12.2010
- Transitioned from systems programming in C to Java, leveraging expertise in low-level network communication for improved messaging platform performance.
- Developed and supported a database-driven state machine framework using Java. Assisted in modeling workflow states within relational tables. Utilized Java Reflection API for dynamic dispatch of developer-registered state handler implementations, allowing for code-free workflow adjustments.
- Engineered concurrency-safe state transition execution through synchronized state locks and idempotent handler contracts.
- Engaged in carrier protocol integration (SMPP, HTTP) and high-volume messaging platform design, establishing a strong knowledge base for future architectural responsibilities.
Education
Master of Computer Applications (MCA) - Computer Science
Uttar Pradesh Technical University (UPTU)
Galgotia Institute Of Mangment And Technology06-2009
Bachelor of Science - Computer And Information Sciences
Gurukula Kangri University (Main Campus)
Haridwar, India06-2006
Skills
- Java programming expertise
- Frameworks: Spring Boot, Spring Cloud, Spring Security, Hibernate; RESTful microservices
- Messaging & Streaming: Apache Kafka (500K TPS), ActiveMQ; event sourcing, at-least-once delivery
- Databases: MySQL, Cassandra, RDBMS; CQRS pattern, read-replica routing, DB lag diagnosis
- Caching & Search: Redis (caching layer design), Elasticsearch / ELK
- Cloud & Infra: AWS (EKS, EC2, S3), Docker, Kubernetes, Private Cloud, Maven, Artifactory
- Reliability: SLO/SLI/error budgets, Prometheus/Grafana, incident command (RCA/CAPA), DR/BCP, chaos engineering
- Security: OAuth2, JWT, mTLS, public API encryption/decryption, PCI/ISO audit readiness
- Architecture Patterns: Microservices, DDD, SAGA, CQRS, event-driven, CAP/BASE, GoF Design Patterns, State Machines
- AI & Dev Tooling: MCP Server Development, Claude Code (agentic coding), Cursor, GitHub Copilot, LLM workflow integration
- Leadership: Team building & mentoring (30 engineers), roadmapping, OKRs, stakeholder management
- Strategic planning
- Engineering design
- Coaching and mentoring
Languages
English
Bilingual or Proficient (C2)
Hindi
Bilingual or Proficient (C2)
Timeline
Engineering Manager — Wallet Engineering
Paytm Payments Bank
03.2022 - Current
Senior Technical Architect
mCarbon Tech Innovation / Nuance India
05.2015 - 04.2022
Lead Engineer
Mahindra Comviva Technologies
12.2010 - 04.2015
Associate Software Engineer
mCarbon Tech Innovation
08.2009 - 12.2010
Master of Computer Applications (MCA) - Computer Science
Uttar Pradesh Technical University (UPTU)
Bachelor of Science - Computer And Information Sciences
Gurukula Kangri University (Main Campus)