Krishna Teja Sunkara

Krishna Teja Sunkara

Lead Developer & AWS Certified Solutions Architect

Engineering Leader with 12 years of experience building secure, scalable, cloud-native enterprise systems across aviation, finance, and publishing domains. Currently engineering high-uptime weather and meteorology applications at Delta Airlines.

🎯 99.9% API Uptime ⚡ 50% Performance Boost 💰 25% Cost Reduction

💼 Professional Experience

Lead Developer (Full Stack)

Delta Airlines

Jun 2023 — Present
  • ▹Led a cross-functional team of 8 engineers across US-India, owning system design, delivery, and production stability for mission-critical distributed APIs
  • ▹Delivered 99.9% uptime by engineering failover mechanisms for distributed APIs, reducing incidents and improving reliability
  • ▹Drove cloud cost optimization (FinOps) by implementing DynamoDB TTL policies, re-architecting network data transfer paths, reducing non-production cloud spend by ~25%
  • ▹Reduced security risk by integrating Veracode SAST/DAST/SCA into CI/CD, enabling early detection and fixing 100+ vulnerabilities
  • ▹Improved real-time dashboard performance by 50% through RxJS optimization
  • ▹Cut API failures ~30% by migrating on-prem services to AWS (API Gateway, Lambda) with modernized integrations

Technical Lead (Full Stack)

London Stock Exchange Group (LSEG)

Jul 2022 — Jun 2023
  • ▹Led a team of 10 engineers delivering Angular and Spring Boot applications in a globally distributed environment
  • ▹Implemented GitLab CI/CD pipelines, reducing manual release efforts by 40% and enabling automated deployments
  • ▹Facilitated code reviews and technical interviews, raising code quality standards

Senior Full Stack Engineer

Taylor & Francis Group

Jul 2021 — Jul 2022
  • ▹Developed Spring Boot REST APIs and integrated with publishing microservices for metadata, journal, and article transfer
  • ▹Implemented OAuth 2.0 authentication, securing both user and API-to-API communications
  • ▹Utilized Aspose for DOC-to-PDF conversion, adding watermarks, headers, and pagination to manuscripts
  • ▹Improved system reliability by increasing test coverage to 90%

Senior Software Engineer

Refinitiv (acquired by LSEG)

Apr 2018 — Jul 2021
  • ▹Built multi-threaded Java applications for high-volume, real-time data processing, integrating with InfluxDB for market data storage
  • ▹Introduced Docker, reducing local setup time by 20% and simplifying onboarding
  • ▹Implemented JWT-based authentication strengthening security for web applications
  • ▹Built a multi-threaded REST client for parallel API calls, delivering ~10× faster document processing

QA Engineer / Senior QA Engineer

Thomson Reuters

Apr 2014 — Apr 2018
  • ▹Achieved 100% automation for SDI and database comparison testing using Java and Selenium, reducing regression cycle time by 60%

Featured Projects

FICON – Field Conditions & Weather Systems

Delta Airlines

Mission-critical weather and meteorology application serving Delta's flight operations. Implemented failover mechanisms ensuring 99.9% uptime for distributed APIs handling real-time weather data for flight safety decisions.

AWS Lambda API Gateway DynamoDB Spring Boot Angular

Forest Spirit

London Stock Exchange Group (LSEG)

Built Docker-based local setup, Angular UIs, and a multi-threaded REST client for parallel ML API calls. Explored Amazon Textract (POC) and delivered a custom PDF-to-HTML pipeline for paragraph-level document AI processing.

AWS Textract Docker Angular Multi-threading ML APIs

Dynamic Submission Web V2

Taylor & Francis Group

Global manuscript submission platform serving researchers and journal editors. Built Angular 12 UIs, Spring Boot APIs, and Aspose-based PDF processing with OAuth 2.0 authentication for secure document handling.

Angular 12 Spring Boot OAuth 2.0 Aspose PDF Processing

Fast Tick

Refinitiv (now LSEG)

Designed microservices leveraging Akka actor model and deployed on AWS ECS to process intraday quote data and corporate actions files. Built multi-threaded Java pipeline for high-frequency and multi-GB historical datasets, integrating with InfluxDB and AWS S3. Outputs powered Refinitiv Eikon for global traders.

AWS ECS Akka InfluxDB S3 Multi-threading

Corporate Actions Master

Refinitiv QA

Achieved 100% test automation in SDI & DB comparison testing using Java. Automated UI testing with Selenium, significantly reducing regression cycles by 60%.

Java Selenium Test Automation JUnit

🛠️ Tech Stack

Languages & Frameworks

Java 17+ Python TypeScript SQL Spring Boot Angular 12+ FastAPI RxJS

Cloud & DevOps

AWS Lambda API Gateway DynamoDB ECS S3 CloudWatch Docker GitLab CI/CD CloudFormation

Databases

DynamoDB MySQL MongoDB InfluxDB

AI & Engineering Tools

AWS Textract Amazon Q Microsoft Copilot Veracode JIRA Confluence

AWS Certifications

Solutions Architect

Associate Level

Developer Associate

AWS Certified

AI Practitioner

Certified AI Specialist

Key Achievements

99.9%

API Uptime

50%

UI Performance Boost

25%

Cloud Cost Reduction

10×

Faster Processing