Headline

Application Engineer @ Amazon | Java, Spring Boot, SQL, REST APIs | AdTech & Data Platforms | AWS

About

Currently open to Software Developer/ Java Backend / Application Engineer / Advertising domain Tech-focused roles. Application Engineer with 6+ years at Amazon, spanning Java backend development and Advertising/AdTech platforms. Experience working across high-scale backend systems, REST and GraphQL APIs, and data-driven workflows. Strong hands-on background in Java, Spring Boot, SQL, and system analysis, building and validating services that support large volumes of business and advertising data. Regular work with large datasets, writing optimised SQL queries to ensure performance, accuracy, and reliability. Prior experience in Amazon Ads, working closely with campaign delivery, performance metrics, fraud checks, and operational optimisation, gives me a strong domain understanding of the advertising system. Comfortable in AWS cloud environments, CI/CD pipelines, Docker, and production monitoring.

Location

Bengaluru

AI stack

antigravity

claude code

github copilot

kiro

lovable

claudecode

Work experience

Application Engineer at Amazon, Sep 2022 - Dec 2023 · 1 y 3 mo, Bengaluru, - Build and maintain Java backend services using Spring Boot - Design and optimize REST APIs for reliability and performance. - Write and tune SQL queries for large-scale data validation. - Monitor production systems using AWS CloudWatch. - Support CI/CD pipelines (AWS CodePipeline, Maven, Gradle). - Collaborate with product, analytics, and stakeholders.

Advertising Specialist at Amazon, Oct 2017 - Aug 2022 · 4 yrs 11 mos, Hyderabad, - Resolved complex seller account and platform issues, then transitioned into the Amazon Advertising domain through cross-skilling - Managed and optimized large-scale advertising campaigns, ensuring delivery accuracy and performance - Validated ad delivery, clicks, impressions, and fraud-related signals across advertising systems - Built and maintained SQL-based reports and dashboards for campaign performance analysis - Used Java- and JavaScript-based internal tools to troubleshoot data and system discrepancies - Collaborated with engineering and AdTech teams to improve platform workflows and operational efficiency

Education

Bachelor of Technology, Information Technology, Netaji Subhash Engineering College

12th, PCM, Loyola High School, Patna

Public links

github: https://github.com/ankkrish

leetcode: https://leetcode.com/ankkrish

ankitkrishna.tech: https://ankitkrishna.tech/