Jacinta Wanjiru
Middletown,Delaware
Summary
Amazon-trained Software Developer (Amazon Technical Academy Program) with hands-on experience building and deploying production applications using AWS services and Agile practices. Seeking an opportunity to grow as a developer, contribute to impactful projects, and strengthen my skills in software engineering.
Professional software development specialist with background in creating innovative software solutions and optimizing systems for improved performance. Proven ability to collaborate effectively within team environments and adapt to evolving project requirements. Known for technical expertise in programming languages and strong commitment to achieving project goals.
Overview
4
4
years of professional experience
Work History
Software Developer Engineer(SDE 1)
Amazon
04.2024 - 11.2025
- Worked on the payments team within a larger organization to ensure timely and accurate customer payments.
- Collaborated with cross-functional teams to maintain reliable payment processing and meet deadlines consistently.
- Designed and implemented RESTful APIs using Java and Spring Boot, with structured data models.
- Built and deployed code using AWS Lambda, S3, DynamoDB, CloudWatch, AWS CDK, among other AWS infrastructure.
- Developed unit and integration tests (JUnit) and integrated them into CI/CD pipelines for automated builds, testing, and deployments.
- Leveraged AI-assisted tools for code generation and review, which accelerated delivery and improved code quality.
- Monitored system performance and metrics through CloudWatch, iGraphs, alarms, proactively resolving issues to maintain reliability and efficiency.
- Participated in on-call rotations, troubleshooting live production incidents and performing root cause analysis to ensure resolution within SLA targets.
- Collaborated cross-functionally with product, QA, and DevOps teams in agile sprints to deliver new features and maintain platform stability.
- Tech Stack: Java, Spring Boot, AWS (Lambda, S3, DynamoDB, CloudWatch, CDK), Git, CI/CD, JUnit, REST APIs, Agile, AI-assisted Development Tools
Software Developer Engineer(SDE 1)
Amazon
04.2024 - 11.2025
- Worked on the payments team within a larger organization to ensure timely and accurate customer payments.
- Collaborated with cross-functional teams to maintain reliable payment processing and meet deadlines consistently.
- Designed and implemented RESTful APIs using Java and Spring Boot, with structured data models.
- Built and deployed code using AWS Lambda, S3, DynamoDB, CloudWatch, AWS CDK, among other AWS infrastructure.
- Developed unit and integration tests (JUnit) and integrated them into CI/CD pipelines for automated builds, testing, and deployments.
- Leveraged AI-assisted tools for code generation and review, which accelerated delivery and improved code quality.
- Monitored system performance and metrics through CloudWatch, iGraphs, alarms, proactively resolving issues to maintain reliability and efficiency.
- Participated in on-call rotations, troubleshooting live production incidents and performing root cause analysis to ensure resolution within SLA targets.
- Collaborated cross-functionally with product, QA, and DevOps teams in agile sprints to deliver new features and maintain platform stability.
- Tech Stack: Java, Spring Boot, AWS (Lambda, S3, DynamoDB, CloudWatch, CDK), Git, CI/CD, JUnit, REST APIs, Agile, AI-assisted Development Tools
Software Developer Engineer(SDE1) - Internship
Amazon
05.2023 - 03.2024
- Supported the Amazon Infringement team in protecting the marketplace from policy and IP violations.
- Operated in a fast-paced Agile environment with two-week sprints and collaborated closely with senior managers and engineers to deliver features and strengthen technical skills.
- Utilized a wide range of AWS services including S3, Athena, Lambda, Step Functions, CloudFormation, CloudWatch, API Gateway, SQS, SNS, IAM, DynamoDB, Service Quotas, and SageMaker to build and support internal tooling and workflows.
- Developed and consumed APIs using internal and external APIs.
- Participated in code reviews by evaluating peers’ code and provided constructive feedback.
- Addressed review comments and iterated on my own code to meet quality and design standards.
- Authored design documents to outline technical approaches and solutions to engineering problems.
- Delivered demo presentations to showcase project progress, solutions, and outcomes to the team.
- Deployed code to production and validated functionality through thorough testing and monitoring.
Software Developer Engineer(SDE1) - Internship
Amazon
05.2023 - 03.2024
- Supported the Amazon Infringement team in protecting the marketplace from policy and IP violations.
- Operated in a fast-paced Agile environment with two-week sprints and collaborated closely with senior managers and engineers to deliver features and strengthen technical skills.
- Utilized a wide range of AWS services including S3, Athena, Lambda, Step Functions, CloudFormation, CloudWatch, API Gateway, SQS, SNS, IAM, DynamoDB, Service Quotas, and SageMaker to build and support internal tooling and workflows.
- Developed and consumed APIs using internal and external APIs.
- Participated in code reviews by evaluating peers’ code and provided constructive feedback.
- Addressed review comments and iterated on my own code to meet quality and design standards.
- Authored design documents to outline technical approaches and solutions to engineering problems.
- Delivered demo presentations to showcase project progress, solutions, and outcomes to the team.
- Deployed code to production and validated functionality through thorough testing and monitoring.
Amazon Technical Academy (ATA) Participant
Amazon
08.2022 - 05.2023
- Gained experience with introductory through advanced coding concepts, including testing, algorithms, and data structures such as stacks, queues, and trees.
- Studied and applied object-oriented principles such as inheritance, composition, and advanced structures like Big Polynomial.
- Learned Amazon’s internal data structures and practiced querying, logging, and data-driven debugging.
- Worked with AWS services including S3, DynamoDB, and Lambda to build and support applications.
- Developed and consumed APIs using internal API tools.
- Deployed code to production and verified functionality through testing and monitoring.
- Built a strong understanding of how computers operate, run applications, and how to optimize performance.
- Collaborated on multiple projects, improving problem-solving skills, teamwork, and knowing when to seek help.
- Gained exposure to advanced topics including caching, multithreading, and integration testing.
- ATA is a program by Amazon that helps participants learn technical skills, how to troubleshoot, and prepare them for a Software Development role.
Amazon Shipping Dock Associate
Amazon
07.2021 - 08.2022
- Using proper body mechanics to move supplies from one area to the next.
- Making sure the merchandise is not damaged before shipment.
- Loading up the truck safely.
- Documenting and tracking shipment for efficiency.
- Solve shipment defects.
- Work as a team and communicate shipments’ status.
- Amazon ship-dock is a department in Amazon warehouse, responsible for handling merchandise, and ensuring all the packages left the warehouse successfully to Amazon trucks, which would later be distributed to Amazon warehouses responsible for delivery to the customers.
Education
Software development Engineer - undefined
Amazon technical academy
Virtual05.2023
Certificate - Health Information Technology
Wilmington University
New Castle, Delaware09.2021
Bachelor’s Degree - Health Science
Wilmington University
New Castle, Delaware09.2021
Certificate - undefined
Family First Life Insurance
Delaware09.2021
Associate Degree - Associate of Science
Delaware Technical Community College
Wilmington, Delaware06.2021
High School Diploma - undefined
Middletown High School
Middletown, Delaware06.2016
Skills
Java development
Timeline
Software Developer Engineer(SDE 1)
Amazon
04.2024 - 11.2025
Software Developer Engineer(SDE 1)
Amazon
04.2024 - 11.2025
Software Developer Engineer(SDE1) - Internship
Amazon
05.2023 - 03.2024
Software Developer Engineer(SDE1) - Internship
Amazon
05.2023 - 03.2024
Amazon Technical Academy (ATA) Participant
Amazon
08.2022 - 05.2023
Amazon Shipping Dock Associate
Amazon
07.2021 - 08.2022
Software development Engineer - undefined
Amazon technical academy
Certificate - Health Information Technology
Wilmington University
Bachelor’s Degree - Health Science
Wilmington University
Certificate - undefined
Family First Life Insurance
Associate Degree - Associate of Science
Delaware Technical Community College
High School Diploma - undefined
Middletown High School