khushi singla

khushi singla

Senior Software Engineer


About

Software Engineer 2 with 4+ years of experience in backend engineering, specializing in Java, Spring Boot, microservices, and scalable distributed systems. Passionate about building secure, high-performance applications and leveraging AI to solve real-world problems.

Skills
Java
Kubernetes
Docker
PostgreSQL
Gemini
CI/CD
System Design
Experience

Software Engineer 2

Modmed

Apr 2026 to Present
  • Architected multi-epic payment refactor to resolve card-on-file token instability across transaction-api and installment-api modules using optimistic locking, flag-gated cutovers, and zero-downtime backfills.
  • Eliminated recurring contract breaks affecting 3 downstream products by restructuring entity schemas and deprecating legacy token-rotation paths.
  • Led Funding BFF migration to remove public gateway exposure, replacing RSQL passthrough with typed Protobuf/Feign DTOs over dedicated support BFFs.
  • Engineered sticky dashboard filters across 4 reporting modules, utilizing a strict allow-list projection to guarantee zero PHI/PII reaches browser storage.
  • Modernized frontend infrastructure by driving the Angular 20→21 upgrade across 4 workspaces and remediating 9 critical Snyk CVEs.

Backend Engineer

Backbase

May 2025 to Apr 2026
  • Tech Stack: Java 17, Spring Boot, MySQL, Jenkins, Git
  • Designed, developed, and deployed 10+ critical banking features (Overdraft, Courtesy Pay, Overdraft Protection, Beneficiaries), owning the full lifecycle from API specification to production rollout while ensuring strict financial compliance.
  • Integrated Harland Clarke services by implementing AES-based encryption and compliant URL-generation logic,meeting strict security and formatting standards.
  • Delivered major end-to-end API integrations across core banking modules, including spec creation, development,deployment, and service-to-service communication with efficient DTO mapping.
  • Improved CI/CD pipelines and deployment workflows, resolving key pipeline bottlenecks and handling automated deployments across Dev, Test, and Staging environments.
  • Closed 5+ high-priority CVEs, strengthening platform security and ensuring adherence to enterprise security guidelines.
  • Led cross-team bug triage and system stabilization efforts, while mentoring an intern and contributing to scalable,event-driven backend architecture for the Alliant Credit Union project.

Software Enginner

Zaggle

Sept 2024 to May 2025
  • Tech Stack: Java 17, Spring Boot, MySQL, Spring Data JPA, Spring Expression Evaluator, AWS API Gateway, AWS Lambda, ALB.
  • Designed and implemented a comprehensive validation service for report and expense submission processes using Spring Expression Language (SpEL), ensuring accurate data validation across multiple levels.
  • Developed a centralized authentication and authorization service integrated with API Gateway and AWS Lambda, enabling secure, scalable access control across diverse projects.
  • Contributed to a B2B service travel application by handling traveler creation and mapping with specific travel requests, and performed data migrations using Kafka for centralized auth integration.
  • Mentored 2 interns in the development and implementation of the centralized authentication and authorization service,providing guidance on best practices and technical implementation.

Software Engineer

Freshworks

Jul 2022 to Sept 2024
  • Tech Stack: Java 11, Spring Boot, MySQL, Microservices, AWS S3, Spring Data JPA, Elasticsearch, Karate, Kafka, Jenkins, Hibernate.
  • Contributed to the transformation of a CRM application’s tech stack from a monolithic architecture to a microservices-based architecture using Java.
  • Collaborated with senior backend architects to design and implement an import event-driven microservice for the import feature, reducing processing time for 50K records by approximately 80%.
  • Independently led the design and development of export microservices, including High-Level Design (HLD), Low-Level Design (LLD), query optimization, and architectural overhaul during migration from RoR to Java.
  • Developed an automation integration test framework using Karate, cutting manual testing effort by 90%.
  • Optimized SQL queries, leading to an 80% improvement in microservice performance across high-volume endpoints.
  • Integrated AWS S3 for secure file storage and retrieval in import/export workflows, ensuring scalability,reliability, and data integrity across distributed microservices.
  • Built and managed an end-to-end Jenkins CI/CD pipeline, integrating SonarQube quality gates, publishing reports on GitHub, handling deployments, and delivering automated test results to Slack.
  • Built Prometheus metrics and configured alerts to monitor import and update triggers, with automatic anomaly detection and real-time Slack notifications.
  • Mentored interns and resolved high-priority L2/L3 customer-centric bugs, maintaining code quality checks in GitHub repositories and SonarQube validation.
Projects

AI Interview Simulator

Architected and deployed an end-to-end AI-powered interview simulation platform featuring dynamic question generation, context-aware follow-up handling, and real-time conversational LLM workflows. Engineered scalable webhook-driven orchestration pipelines in n8n integrating Groq LLM for adaptive interview generation and automated scoring across clarity, confidence, and relevance metrics. Implemented voice-enabled interview interactions with STT/TTS integration and built persistent session analytics using Supabase for performance tracking.

Streamlit
n8n
Groq LLM
Supabase
Lemonfox
Railway

AI-Powered Data Analytics Assistant

Built a backend-safe AI analytics assistant using Azure OpenAI Assistant API, enforcing tool-only execution via function calling and preventing SQL hallucinations. Designed a scalable function-dispatch layer integrating LangChain, SQLite, and conversational AI workflows.

Azure OpenAI
LangChain
SQLite
Education

MCA

Guru Nanak Dev Engineering College

Jun 2020 to Jun 2022

BCA

Punjab College of Technical Education

Jun 2017 to Jun 2020
Certifications