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I am a senior software engineer with 7+ years of experience building scalable, high-performance platforms across ad tech and financial services. I excel in designing and delivering end-to-end solutions, with strong frontend skills (React, Next.js, TypeScript) and robust backend distributed systems (Java, Spring Boot, Kotlin, gRPC, Protocol Buffers). I also bring solid experience in cloud infrastructure (AWS, Kubernetes, Docker) and data-intensive architectures (Redis, Cassandra). I enjoy collaborating with cross-functional teams, shipping mission-critical features with millisecond end-to-end SLAs, and mentoring junior engineers to grow their skills.…I am a senior software engineer with 7+ years of experience building scalable, high-performance platforms across ad tech and financial services. I excel in designing and delivering end-to-end solutions, with strong frontend skills (React, Next.js, TypeScript) and robust backend distributed systems (Java, Spring Boot, Kotlin, gRPC, Protocol Buffers). I also bring solid experience in cloud infrastructure (AWS, Kubernetes, Docker) and data-intensive architectures (Redis, Cassandra). I enjoy collaborating with cross-functional teams, shipping mission-critical features with millisecond end-to-end SLAs, and mentoring junior engineers to grow their skills.

Qiwei Jin

Full Stack Developer, Back-End Developer, Front-End Developer, +2

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I am a senior software engineer with 7+ years of experience building scalable, high-performance platforms across ad tech and financial services. I excel in designing and delivering end-to-end solutions, with strong frontend skills (React, Next.js, TypeScript) and robust backend distributed systems (Java, Spring Boot, Kotlin, gRPC, Protocol Buffers). I also bring solid experience in cloud infrastructure (AWS, Kubernetes, Docker) and data-intensive architectures (Redis, Cassandra). I enjoy collaborating with cross-functional teams, shipping mission-critical features with millisecond end-to-end SLAs, and mentoring junior engineers to grow their skills.…I am a senior software engineer with 7+ years of experience building scalable, high-performance platforms across ad tech and financial services. I excel in designing and delivering end-to-end solutions, with strong frontend skills (React, Next.js, TypeScript) and robust backend distributed systems (Java, Spring Boot, Kotlin, gRPC, Protocol Buffers). I also bring solid experience in cloud infrastructure (AWS, Kubernetes, Docker) and data-intensive architectures (Redis, Cassandra). I enjoy collaborating with cross-functional teams, shipping mission-critical features with millisecond end-to-end SLAs, and mentoring junior engineers to grow their skills.

Available to hire

I am a senior software engineer with 7+ years of experience building scalable, high-performance platforms across ad tech and financial services. I excel in designing and delivering end-to-end solutions, with strong frontend skills (React, Next.js, TypeScript) and robust backend distributed systems (Java, Spring Boot, Kotlin, gRPC, Protocol Buffers).

I also bring solid experience in cloud infrastructure (AWS, Kubernetes, Docker) and data-intensive architectures (Redis, Cassandra). I enjoy collaborating with cross-functional teams, shipping mission-critical features with millisecond end-to-end SLAs, and mentoring junior engineers to grow their skills.

Skills

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Work Experience

Senior Software Engineer at Bloomberg L.P.

June 20, 2022 - June 20, 2022

Led backend engineering for interactive workflow tools used by financial analysts, building REST and gRPC APIs, collaborating with product managers to deliver reliable features with high availability and low latency; worked closely with data teams to scale solutions.

Senior Software Engineer at DoorDash

June 20, 2022 - November 4, 2025

Led full-stack engineering for the Ads Platform, powering high-performance search, ad ranking, and real-time bidding services used by millions daily. Built React/Next.js dashboards for campaign management with real-time insights and performance metrics. Designed distributed backend services in Java/Kotlin with gRPC and Protocol Buffers, integrated Redis for caching and Cassandra for persistence, deployed on AWS with Docker and Kubernetes, and mentored junior engineers on best practices.

Software Engineer at Bloomberg L.P.

January 20, 2021 - January 20, 2021

Built full-stack solutions for Bloomberg Terminal by combining React UIs with Java/Spring backends, implemented data visualization components for market analytics, and automated pipelines; collaborated with cross-functional teams and improved performance and reliability.