Who is Johnny Chang? Overview
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Johnny Chang is listed as Software Engineer at SoFi, based in San Francisco Bay Area, United States. AeroLeads shows a matched LinkedIn profile for Johnny Chang.
Johnny Chang previously worked as Software Engineer Intern at Grail and Software Developer at Carnegie Mellon University. Johnny Chang holds Master Of Science - Ms, Software Engineering, 3.86/4.00 from Carnegie Mellon University.
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Email format at SoFi
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SoFi
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Profile bio
About Johnny Chang
Software engineer with 3+ years experience in full-stack and backend development. CMU graduate with a strong academic background in computer science, distributed systems, cloud computing, and deep learning. - Hands-on experience in developing scalable Cloud services, AI/LLM applications, and Infrastructure as Code (IaC) modulesKey Projects:- 0 to 1 Product Development: Architecture design; cloud infrastructure; full-stack development; CI/CD implementation- Large-Scale Fintech Product (5M+ users): backend development; scalable microservices; API optimization; cloud infrastructure- Automated Code Review Tool: LLM integration; Retrieval Augmented Generation (RAG)Technical Skills:- Programming Languages: Go, Java, JavaScript, TypeScript, Python, C/C++, Dart- Frameworks/Cloud Services: Node.js, Spring Boot, React, Svelte, SvelteKit, Flutter, AWS, Azure, GCP- DevOps/IaC: Docker, Kubernetes, Helm, Terraform, GitLab CI/CD, Github Actions- Data/AI: MySQL, PostgreSQL, Redis, DynamoDB, MongoDB, S3, Kafka, Flink, Spark, scikit-learn, PyTorch, Llama, LLM, RAG
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4 roles
Johnny Chang work experience
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Software Engineer Intern
- Engineered an event-driven logging feature that integrates Okta event hooks using Go, AWS Lambda, Kinesis, gRPC and MySQL, enhancing the company's regulatory compliance readiness.- Developed a shared Go package and Terraform module enabling AWS SNS to send alerts to Slack, streamlining notification workflows and improving code reusability across the organization, benefiting 300+ engineers
Jun 2024 - Aug 2024
Software Developer
Worked as software developer for CMU TEEL Lab:1. Cloud Computing course project development: - Designed hands-on tasks involving GitHub Actions, Docker management and Helm charts orchestration in container registry and Kubernetes on Azure and Google Cloud for CMU 15619 Cloud Computing course. - Contributed to the development of a grading system using Java and Bash scripting, which evaluated over 2,500 student submissions per semester and led to a 30% improvement in student learning experiences.2. LLM for Code Review:- Developed automated code review tools using Python, LLM, and Retrieval Augmented Generation (RAG) with Pinecone. Optimized results through advanced prompt engineering techniques. achieving 42% reduction in manual code review time.- Analyzed and compared GPT-automated and manual grading results to extract research insights.
Dec 2023 - May 2024
Software Engineer
Full stack software engineer for core products at Oriente, a FinTech startup in South East Asia (acquired in 2024).- Led end-to-end development of a Fintech App using Go, Node.js, React, Flutter, DynamoDB and Kubernetes. Oversaw system design and technology selection while implementing core features, resulting in a successful product launch. - Established CI/CD pipelines for mobile, frontend, and backend services leveraging Docker, Terraform, Helm, and Gitlab CI/CD, reducing deployment time by 90%. - Designed and developed REST APIs for multiple microservices using Java, Spring Boot, MySQL, Redis, and Kafka, streamlining internal operations and elevating customer experiences for 5M+ users. - Led cloud cost optimization initiatives through resource downgrades, environment consolidations, and server migrations, resulting in 50% reduction in monthly cloud expenses.- Refactored large-scale legacy codebases using design patterns such as dependency injection and facade pattern to enable testability and added unit tests, achieving a 10% reduction in reported bugs. - Identified and optimized slow API endpoints, improving response times by up to 100x by rewriting inefficient SQL queries and refactoring application code to reduce redundant database operations.
Jun 2020 - May 2023
3 education records
Johnny Chang education
Master Of Science - Ms, Software Engineering, 3.86/4.00
Bachelor Of Science - Bs, Computer Science, 4.0/4.0
Bachelor'S Degree, Mechanical Engineering
FAQ
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What company does Johnny Chang work for?
Johnny Chang works for SoFi.
What is Johnny Chang's role at SoFi?
Johnny Chang is listed as Software Engineer at SoFi.
Where is Johnny Chang based?
Johnny Chang is based in San Francisco Bay Area, United States while working with SoFi.
What companies has Johnny Chang worked for?
Johnny Chang has worked for Sofi, Grail, Carnegie Mellon University, and Oriente.
How can I contact Johnny Chang?
You can use AeroLeads to view verified contact signals for Johnny Chang at SoFi, including work email, phone, and LinkedIn data when available.
What schools did Johnny Chang attend?
Johnny Chang holds Master Of Science - Ms, Software Engineering, 3.86/4.00 from Carnegie Mellon University.
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