Backend Engineer (SDE-2)
Java | Spring Boot | Distributed Systems | Kafka | Cloud
📍 Noida, India
📧 vicky_kumar@outlook.in
🔗 LinkedIn | GitHub
Backend Engineer with 4+ years of experience building and supporting
distributed backend systems using Java, Spring Boot, Kafka, Redis, and SQL Server.
Worked across a 14+ microservices platform, driving observability improvements,
developer productivity initiatives, and a Spring Boot 2 → 3 migration POC.
Currently developing AI-driven document redaction systems using Azure OpenAI and LangChain,
with a strong focus on performance, cost optimization, and production reliability.
Backend Engineer (SDE-2 Equivalent)
Sep 2023 – Present | Noida, India
- Replaced manual bug reproduction workflows by implementing
MDC-based correlation IDs, enabling engineers to trace failures end-to-end
in Elasticsearch using a single request ID and reducing incident investigation
time from hours to seconds. - Drove a Spring Boot 2 → 3 migration initiative across multiple services,
resolving Jakarta namespace incompatibilities and validating a safe migration
approach before handover during the QA phase. - Reduced new-developer onboarding time from weeks/months to 2–3 days by
designing a local database migration workflow using DBeaver, enabling
reliable local setups and faster, isolated bug reproduction. - Ensured SLA compliance, production stability, and safe releases through
collaboration with QA and product teams.
Python, Flask, Azure OpenAI, LangChain
- Designed and implemented an AI-driven document redaction pipeline for masking
sensitive information in enterprise documents at production scale. - Optimized prompt design and output structure, reducing token usage from
~10k to ~3k tokens and cutting AI processing costs by 60–70%, while
improving redaction accuracy from ~60% to ~95%. - Built scalable workflows with document chunking, asynchronous processing,
rate limiting, and content reassembly to balance throughput, latency, and cost. - Fixed formatting issues in OCR-processed PDF documents by programmatically
reconstructing broken table structures, restoring ~95% layout accuracy,
and integrated secure storage using Azure Blob Storage.
Backend Engineer
Jun 2021 – Sep 2023 | Noida, India
- Built and optimized backend services for real-time ticket booking, wallet
top-ups, and KYC workflows supporting high-volume transactional traffic. - Integrated high-traffic third-party systems including IRCTC, RedBus, and PayU,
ensuring fault tolerance and reliable payment processing. - Improved API latency and throughput using Redis caching and asynchronous processing.
- Implemented Kafka-based event-driven flows for transactional and notification use cases.
- Spearheaded backend development for a digital agent onboarding system,
significantly reducing onboarding turnaround time. - Collaborated with frontend and business teams to design scalable REST APIs.
- Maintained a ~97% bug resolution rate, improving platform stability and customer trust.
Core Backend:
Java (8–21), Spring Boot, REST APIs, Microservices, Hibernate/JPA
Data & Messaging:
PostgreSQL, SQL Server, Kafka, Redis
System Design:
Distributed Systems, Event-Driven Architecture, Scalability, Performance Optimization
Cloud & DevOps:
Azure (Blob Storage, Service Bus, SQL Database), AWS S3, Docker, CI/CD (Azure DevOps)
AI & Automation:
Azure OpenAI, LangChain, Generative AI Pipelines, Prompt Engineering
- Counsellor Extraordinaire – EY
Leadership excellence and team ownership - Ace Award – Spicemoney
Top performer for technical impact and delivery
Master of Computer Applications (MCA)
Lovely Professional University | 2019 – 2021
Bachelor of Computer Applications (BCA)
Jamuni Lal College | 2015 – 2018