I'm Devin, a software engineer in Southern California. I build infrastructure, distributed systems, and developer tooling, and I care most about making complex systems easier to operate. Right now that means Ekman, an embeddable state machine runtime for backend services, built so a lifecycle does not have to become its own service to be run well. Before that I finished an M.S. in Computer Science at CU Boulder, where I also played inside linebacker. Away from the keyboard I surf, ski, lift, hike, and listen to more metal than is reasonable.
August 2026
An embeddable state machine runtime for backend services, built so every lifecycle in a system is defined one way and run by one runtime instead of becoming its own service. Each instance is addressed by a human-readable key, holds its own state and values, and processes triggers one at a time, so handlers need no locks. The runtime owns what homegrown versions leave out: ordering, retries and timeouts, fencing, constraints, history, queries, and a memory budget that keeps a full audit trail without keeping every instance resident. No server, no cluster, no sidecar. Zero runtime dependencies, backed by a language-neutral spec and a 68-scenario conformance suite so it can be ported to Go, Rust, and C++ and embedded in low-level systems.
December 2025
A Git implementation written from scratch in C that reads and writes Git objects and supports the core version control operations. It implements the object model (blobs, trees, commits) with SHA-1 hashing and zlib compression, and can initialize repositories, read and write objects, build trees, stage files, commit changes, and clone remote repositories over the Git transfer protocol with pack file parsing.
December 2025
A Redis server written from scratch in Go that speaks the Redis Serialization Protocol and handles concurrent client connections. It covers key-value commands with TTL expiration, Lists, Streams with blocking reads, and Sorted Sets, plus transactions (MULTI, EXEC, DISCARD), master-replica replication with RDB transfers and command propagation, RDB persistence, Pub/Sub, and ACL-based authentication.
November 2025
A POSIX-style shell written from scratch in C, in the spirit of Bash or Zsh. It has a full REPL with command parsing, process spawning, and built-ins (pwd, cd, echo, type, exit, history), single and double quoting with backslash escapes, stdout and stderr redirection with append modes, multi-command pipelines that work with built-ins, tab completion for executables and built-ins, and persistent history with arrow-key navigation.
June 2025
An HTTP/1.1 server written from scratch in Java on raw TCP sockets, with no HTTP library. It parses request lines, headers, and bodies, handles GET and POST, serves static files, and returns proper status codes. It supports concurrent clients with multi-threading, gzip and other compression schemes, and persistent connections with correct close handling.
June 2024
A CycleGAN in TensorFlow and Keras that turns photographs into paintings in the style of Monet, for the Kaggle competition of the same name. Two generators and two discriminators handle bidirectional image translation, with adversarial and cycle-consistency losses keeping the output realistic. Uses GroupNormalization and trains on TPU and GPU.
June 2024
A convolutional neural network that identifies metastatic tissue in histopathologic scans of lymph node sections, from the Kaggle competition "Histopathologic Cancer Detection". Covers data loading and augmentation, a Keras Sequential architecture with regularization, training, evaluation on accuracy, loss, and recall, and a competition submission.
October 2023
My first end-to-end product, built for my software architecture course in grad school (Finarima on GitHub). A Next.js app takes a ticker and a time period and returns fitted ARIMA models and plots. Requests go through API Gateway to a Lambda running a custom container from ECS, plots land in S3, and MySQL via Prisma holds the data, with Clerk and Stripe on the front end. Barebones by design, but it shipped and worked end to end. No longer hosted.
November 2022
My first large project, and the one that combined the most moving parts: a pipeline that turns multi-angle sports footage into an interactive 3D environment so a viewer can watch a play from any position on the field. It was split into a model trainer, an inference service, a transform service for pose estimation and multi-view synthesis, and a 3D reconstructor. I gathered and labeled the training data myself and trained on both local hardware and AWS. It proved out real-time 3D reconstruction from 2D video and stays private because it was built with commercial intent.
Private
Ekman is a state machine runtime for backend services that runs inside your process. This is what it is, why every lifecycle kept turning into another service, and the engineering decisions that make one runtime able to replace them.