UMD CS B.S./M.S. · GRADUATING MAY 2027 · AWS SDE INTERN, SUMMER 2026
I mostly build things to find out how they work. Outside of work I'm into mechanical keyboards, bouldering, and keeping up with tech.
Open to Summer 2027 internships and new-grad roles · relocating anywhere in the US
Three of the things I've built, with one measured result each. The names link to the code.
This summer I'm an SDE intern on EC2 Networking at AWS, where I built an agent that migrated seven production canaries from Scala to Java, cutting each one from about a week of work to about a day. Full timeline
Resume on request · ivanwang8989@gmail.com
A few things I spend my free time on.
You can customize every part, so you can tailor a board to exactly what you or someone else needs, and picking the right part for the job is the fun of it.
I climb for the community and the problem solving. A boulder can usually be done a lot of different ways, and which one costs you the least depends on your body, and working that out is my favorite part.
Bouldering
I keep up with tech pretty closely, from new hardware to how governments are handling AI. I'm interested in where the industry is heading.
What I follow
lodestone is a vector search engine I built in Rust. This is its benchmark: higher is more accurate, further right is faster, and each dot is one setting I measured.
| Index | Setting | Recall at k=10 | Queries per second |
|---|---|---|---|
| IVF-PQ | nprobe=32 | 0.9747 | 1,229 |
| IVF-PQ | nprobe=16 | 0.9747 | 2,305 |
| IVF-PQ | nprobe=8 | 0.9748 | 4,110 |
| IVF-PQ | nprobe=4 | 0.9409 | 6,128 |
| HNSW | ef=256 | 1.0000 | 8,898 |
| IVF-PQ | nprobe=1 | 0.4850 | 9,797 |
| HNSW | ef=128 | 1.0000 | 13,514 |
| HNSW | ef=64 | 0.9964 | 20,946 |
| HNSW | ef=32 | 0.9759 | 31,845 |
| HNSW | ef=16 | 0.8996 | 47,335 |
| Baseline | exact brute force (parallel, full corpus scan) | exact | 971 |
readingef=32 · recall 0.9759 · 31,845 q/s · single coredrag across the plot · or press ← →tap a point · drag to pan · or step
50,000 x 128-d · k=10 · single core · Xeon 8488C · bench_50k_128d.txt (opens in new tab)
FIG. 01 · parallax-kv
DISTRIBUTED SYSTEMS · GO
A three-node Raft key-value store built from scratch: PreVote, ReadIndex, persist-before-send ordering, snapshots, a durable WAL, a gRPC runtime.
FIG. 02 · accretion-db
STORAGE ENGINE · RUST
An embeddable LSM-tree storage engine: CRC-framed WAL, group commit, memtables, block SSTables, bloom filters, size-tiered compaction. The crate root forbids unsafe code, so the engine has no unsafe blocks by construction.
FIG. 03 · lodestone
VECTOR SEARCH · RUST
A vector search engine built from scratch in Rust for embeddings and RAG retrieval. An HNSW proximity graph and an IVF-PQ compressed index sit over hand-written AVX-512 distance kernels with runtime feature dispatch.
B.S./M.S. in Computer Science, M.S. expected May 2027. Departmental Honors (research track)
On the faculty-mentored research track; minors in Data Science and Philosophy
Coursework: Data Structures & Algorithms, Object-Oriented Programming, Distributed Systems, Operating Systems, Computer Networks, Database Systems, Software Engineering, Machine Learning, Natural Language Processing
Python · Java · Go · Rust · TypeScript/JavaScript · Scala · SQL · Bash
Raft · gRPC/Protobuf · LSM trees · PostgreSQL/SQLite
Flask/FastAPI · Node.js · JUnit 5 · Playwright
PyTorch · HuggingFace · scikit-learn · LangChain · JAX · Qiskit · DisCoPy · pytket
AWS (EC2/VPC, SDK, CDK, CloudWatch) · Docker · Linux · GitHub Actions · CI/CD · Jenkins
I'm looking for Summer 2027 software engineering internships and new-grad roles. Email is the fastest way to reach me, and I can send a full resume on request.