Divyansh D
Founding Engineer
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Portfolio
Work experience
Software Developer, Quantum - R&D
QuantumFlow AI • Full-time
Dec 2025 - Present • 5 mos
Company Name - BQP (BosonQ psi)
Software Engineer
ROEHRLE-IT • Part-time
Sep 2025 - Nov 2025 • 2 mos
Company Name - Roe AI Delivered missing backend APIs and an E2E testing framework for testing, staging, and prod clusters using Next.js, Django; fixed critical infra bugs for agent runs.
Founding Engineer
AlgoPear • Full-time
Apr 2019 - Jul 2022 • 3 yrs 3 mos
Company Name - AlgoUniversity Built a scalable online judge using React, Node.js, and TypeScript with a secure sandbox, handling 1M+ submissions and 100K+ users under real-time contest loads. Designed cost-efficient async processing with AWS Kafka to manage spikes, saving ~$24K/month while improving reliability. Implemented on-prem architecture with Nginx and Gunicorn for horizontal scaling and stable performance. Managed Kubernetes clusters for Code Genie (AI assistant), orchestrating Docker workloads across AWS for 20K+ weekly users. Improved performance using Redis caching, S3 storage, and PostgreSQL for real-time leaderboards. Strengthened security via CloudWatch and DDoS mitigation, achieving >90% uptime and supporting $1M funding. Administered Linux systems, debugging at kernel level and automating via shell scripts. Led infra migration from VMs to Kubernetes. Tech: TypeScript, React, Node.js, AWS, Docker, Kubernetes, Kafka, Redis, PostgreSQL.