Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Senior Software Engineer with 5+ years of experience owning and building backend distributed systems at scale. Focused on stateless architectures, async processing, production readiness, and reliability through p99 latency optimization and failure isolation. Analytical problem solver with strong incident response and observability practices. Collaborates cross-functionally to troubleshoot issues, reduce outages, and drive process and software improvements.…Senior Software Engineer with 5+ years of experience owning and building backend distributed systems at scale. Focused on stateless architectures, async processing, production readiness, and reliability through p99 latency optimization and failure isolation. Analytical problem solver with strong incident response and observability practices. Collaborates cross-functionally to troubleshoot issues, reduce outages, and drive process and software improvements.

Toussida Minoungou

Back-End Developer, Full Stack Developer, Web Developer, +4





Senior Software Engineer with 5+ years of experience owning and building backend distributed systems at scale. Focused on stateless architectures, async processing, production readiness, and reliability through p99 latency optimization and failure isolation. Analytical problem solver with strong incident response and observability practices. Collaborates cross-functionally to troubleshoot issues, reduce outages, and drive process and software improvements.…Senior Software Engineer with 5+ years of experience owning and building backend distributed systems at scale. Focused on stateless architectures, async processing, production readiness, and reliability through p99 latency optimization and failure isolation. Analytical problem solver with strong incident response and observability practices. Collaborates cross-functionally to troubleshoot issues, reduce outages, and drive process and software improvements.

Available to hire

Senior Software Engineer with 5+ years of experience owning and building backend distributed systems at scale. Focused on stateless architectures, async processing, production readiness, and reliability through p99 latency optimization and failure isolation.

Analytical problem solver with strong incident response and observability practices. Collaborates cross-functionally to troubleshoot issues, reduce outages, and drive process and software improvements.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Javanese

Fluent

Work Experience

Senior Software Engineer at DonorsChoose

February 1, 2025 - May 1, 2026

Owned and rolled out a principal verification workflow integrating teacher onboarding, Zendesk case management, and internal review processes, increasing the percentage of schools with verified principal information from 30% to 96% and strengthening fraud prevention controls. Built teacher-facing enhancements in Java and React, including project funding workflows, digital content management, and shipping cost automation. Designed and implemented automated notification workflows for teachers, principals, and operations staff to reduce manual communications and improve engagement across the project lifecycle.

Software Engineer II at Nationwide

June 1, 2022 - February 1, 2025

Developed and implemented a distributed Java Spring Boot backend supporting 5K–10K RPS at peak by decoupling asynchronous APIs from async processing to enable stateless scaling. Partnered with product and platform teams to validate production changes through staged rollouts and metric comparisons, reducing change-related risk. Instrumented and analyzed p99 latency and error-rate changes, using Redis caching and PostgreSQL indexing to reduce p99 latency from 800ms to 300ms. Designed a fault-isolation layer with circuit breakers and load-shedding for third-party API failure modes, validating fallbacks with targeted failure testing while maintaining 99.95% availability. Defined versioned API contracts and schema evolution patterns to support independent deployments and reduce release cycles from 2 weeks to 2 days.

Software Engineer at Nationwide

June 1, 2022 - Present

Led the design and implementation of a scalable API platform for partner system integrations, increasing partnership-related transactions by 30%. Engineered an offline processing system, saving $1.8M+ quarterly in operational efficiency and mailing costs. Designed a microservices-oriented architecture with extensible REST APIs to support scalable systems achieving 99.99% uptime. Built a scalable system to move 49M+ documents at 10 documents/sec. Communicated complex ideas effectively to non-technical stakeholders to ensure alignment and shared success.

Java Software Engineer at Verizon

May 1, 2021 - June 1, 2022

Created and validated a Kafka-based event processing pipeline handling 10M events per day, using load testing and dependency failure testing while migrating asynchronous workloads, reducing p99 latency by 25% and improving resilience to database outages. Implemented Redis caching for read-heavy endpoints (70–85% hit rate), reducing peak database load by 45% and avoiding horizontal scaling during seasonal traffic spikes. Built PostgreSQL schemas and indices for high-write workloads (1K+ writes/sec) to support horizontal scaling while minimizing lock contention and hot rows. Led incident response improvements for 99.9% SLA services by translating post-mortem learnings into architecture changes and earlier failure detection, reducing incident response time by 35%.

Software Engineer at Verizon

May 1, 2021 - June 1, 2022

Built highly scalable services through loosely coupled microservices. Automated a test framework for billing, reducing post-release bugs by 40%. Participated in architecture and design reviews to contribute to robust, scalable systems. Collaborated across product, DevOps, and QA to improve resource efficiency, yielding a 15% improvement in resource utilization. Mentored peers in clean code practices and design patterns to strengthen engineering discipline and team performance.