2026 - Present
Software Engineer Intern, Mastra.ai
- Building software engineering work at Mastra.ai; more public details to be added as the internship progresses.
Devanshu Sharma
Systems Software Engineer
Building distributed systems, backend infrastructure, databases, and developer-facing tools.
About
I care most about accuracy in distributed systems, databases, and concurrency. Tiny details decide whether a system stays correct or quietly falls apart.
Currently, I am a Software Engineer Intern at Mastra.ai. Previously, I worked at Clockwork Labs on SpacetimeDB, a distributed real-time database that combines the database, application server, and synchronization layers into one high-performance environment.
I have also worked on scheduling performance and security at Cal.com and on GPU attestation and deterministic evidence pipelines at Ashiba Research. I have the most respect for code with clear, unambiguous, and explicit invariants.
Right now, I am drawn to real-time infrastructure, distributed databases, backend performance, open source systems software, indexing, search, schema design, correctness, and technical writing that makes complex systems easier to understand.
Experience
Jun 2026 - Sep 2026
Software Engineer Intern, Clockwork Labs
- Contributed to the SpacetimeDB Runtime Core, improving infrastructure for application execution, transaction coordination, and database interaction under real-time workloads.
- Improved runtime correctness and performance across latency-sensitive transaction and database paths.
- Investigated core execution paths involving concurrency, memory management, and transactional state to support scalable real-time applications with predictable behavior.
May 2026 - Jun 2026
Research Engineer Intern, Ashiba Research
- Built ARC, a deterministic verification system for GPU telemetry, attestation tokens, and deployment logs.
- Engineered NVIDIA attestation checks with nonce-based freshness guarantees for GPU identity claims.
- Designed a canonical evidence pipeline across nvidia-smi, NVML, DCGM, OTEL spans, CloudTrail, and NVIDIA EAT JWTs.
Jun 2025 - Oct 2025
Software Engineer Intern, Cal.com
- Improved reliability, performance, and security across high-traffic booking flows.
- Replaced O(n²) scheduling logic with faster sorting, early-exit scans, and two-pointer techniques.
- Strengthened conflict detection, availability filtering, cross-locale correctness, and reviewed 200+ PRs.
Education
2022 - 2026
B.Tech in Computer Science and Engineering
Graphic Era Hill University, Dehradun
Selected Work
2026
Distributed Search Engine
Go, etcd, Redis, Bleve, embeddings, Docker
Built a sharded search system indexing 24K+ Wikipedia documents with 28ms p99 latency at 7K+ QPS.
2026
Diffo: Git-like Schema Versioning
Go, PostgreSQL, pgx, libpg_query, graph algorithms
Built a commit-DAG-based schema versioning system with deterministic ancestry and structured merges.
Skills
C++ / Go / SQL / Distributed Systems / REST APIs / Concurrency / gRPC / PostgreSQL / Redis / etcd / MongoDB / Docker / Git / Linux / Bleve / pgx / libpg_query