Full Stack Engineer with a year and half experience building a mobile application. Skilled in designing dynamic app screens, reducing renders with lazy queries, and producing innovative solutions to multi-faced features in a fast paced environment. Collaborate well with a product designer and senior engineer. I have also spent a year as a contractor improving LLM models and guiding AI agents.

Jake Fleischer

Full Stack Engineer with a year and half experience building a mobile application. Skilled in designing dynamic app screens, reducing renders with lazy queries, and producing innovative solutions to multi-faced features in a fast paced environment. Collaborate well with a product designer and senior engineer. I have also spent a year as a contractor improving LLM models and guiding AI agents.

Available to hire

Full Stack Engineer with a year and half experience building a mobile application. Skilled in designing dynamic app screens, reducing renders with
lazy queries, and producing innovative solutions to multi-faced features in a fast paced environment. Collaborate well with a product designer and
senior engineer. I have also spent a year as a contractor improving LLM models and guiding AI agents.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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Language

English
Fluent

Work Experience

FullStack Software Engineer at InterConnect LLC
May 1, 2024 - Present
Coding a mobile application for IOS and Android with React Native frontend and Relay Graphql API for start up company and perform PR reviews on Github with senior software engineer and QA engineer. Created 18 pages with 95% Jest unit test coverage as well as Maestro e2e testing. Include animations using the Reanimated library. Made CRUD APIs (Query, Mutations, Subscriptions, Fragments) using Graphql and storing data on MongoDB for persistent and relay store for cached data. Designed a graphql web socket based real time chat feature with virtualized lists as well as another feature for location based tracking using Expo API. Added core error boundary and error loading to the app which allows users to refresh crashed pages and the use of the app without network connection. Developed with the use of AI LLM Agents like Claude and Cursor bot.
Code Annotator [Contractor] at DataAnotation.tech
May 1, 2025 - Present
Utilized Gemini model API and wrote System prompts for developing web app. Graded the use of AI agents such as Cline, Grok, Cursor, and Sonnet with detailed objective / subjective criteria.
Coder / AI Trainer [Contractor] at Outlier AI
July 1, 2024 - September 30, 2025
Improve LLM models by correcting coding responses in Java, C++, C#, MATLAB, and Javascript.
Software Engineer Intern at Salesforce (Tableau)
August 1, 2022 - September 30, 2025
12-week internship with assigned project of converting the Internal Suggestions API to a public version. Worked on CRASS, a search service build on Spring-Boot with Gradle dependency. Experience with Postman, Perforce, Mockito, Spring Interceptors and Filters, and Slack. Authenticated user, throttled API, restrict parameter inputs, configure puppet files to re-route call, and track user usage data. Designed unit tests and smoke tests for Suggestions. Had code reviewed as well as reviewed other team members' code.
Core Researcher at Lehigh University
December 1, 2021 - September 30, 2025
Researched to design a feedback control system for neurostimulation to treat damaged internal organs. Translated control core functionality from Python into MATLAB as well as bug fixes in others' code to decrease CPU costs by 30%. Experience working with AWS services (S3), Docker containers, and OSPARC.
FullStack Software Engineer at InterConnect LLC
May 1, 2024 - Present
Developed a mobile application for iOS and Android using a React Native frontend and Relay GraphQL API. Conducted PR reviews with a senior software engineer and QA engineer. Implemented 18 pages with 95% Jest unit test coverage and Maestro end-to-end testing, including animations with Reanimated. Created CRUD APIs (Query, Mutations, Subscriptions, Fragments) with GraphQL and stored data in MongoDB for persistence and a relay store for caching. Designed a real-time GraphQL WebSocket chat with virtualized lists and a location-based tracking feature using Expo API. Added robust error boundaries and offline support to improve resilience. Collaborated closely with product designers and AI agents to deliver features.
Code Annotator [Contractor] at DataAnotation.tech
May 1, 2025 - Present
Utilized Gemini model API and authored system prompts for developing a web app. Evaluated AI agents (e.g., Claude, Cursor, Sonnet) against detailed objective/subjective criteria to guide improvements.
Coder / AI Trainer [Contractor] at Outlier AI
July 1, 2024 - September 30, 2025
Improved LLM models by correcting coding responses across Java, C++, C#, MATLAB, and JavaScript; contributed to training data quality and model behavior.
Software Engineer Intern at Salesforce (Tableau)
August 1, 2022 - September 30, 2025
12-week internship focused on converting Internal Suggestions API to a public version. Worked on CRASS, a search service built on Spring Boot with Gradle. Gained experience with Postman, Perforce, Mockito, Spring Interceptors and Filters, and Slack. Implemented authentication, throttling, input validation, and routing logic; tracked user usage data. Designed unit tests and smoke tests and participated in peer code reviews.
Core Researcher at Lehigh University
December 1, 2021 - September 30, 2025
Researched feedback control systems for neurostimulation to treat damaged internal organs. Translated core control functionality from Python to MATLAB and performed bug fixes to reduce CPU costs by 30%. Gained experience with AWS S3, Docker containers, and OSPARC.

Education

Master of Science in Computer Science at University of Southern California
August 1, 2023 - May 1, 2025
Bachelor of Science in Computer Science at Lehigh University
January 1, 2019 - December 1, 2022
Master of Science in Computer Science at University of Southern California
August 1, 2023 - May 1, 2025
Bachelor of Science in Computer Science at Lehigh University
January 1, 2019 - December 1, 2022

Qualifications

Add your qualifications or awards here.

Industry Experience

Computers & Electronics, Software & Internet, Media & Entertainment, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
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