Ben Sima

• Clojure
• Common Lisp
• Go
• Haskell
• Java
• JavaScript
• Nix
• Python
• Ruby
• Rust
• Scheme
• Shell/Bash
• SQL
• TypeScript

• Angular
• Apache Kafka
• CI/CD
• DevOps
• Docker
• Flask
• Git
• Numpy
• Pandas
• Ruby on Rails

• Sole owner of GPU kernel optimization for a production LLM inference platform: an autonomous agent loop (generator, correctness verifier, Nsight-based profiler) that searches Triton and CUDA kernel space on NVIDIA Blackwell hardware.
• Built an adversarial correctness gate for machine-generated kernels – held-out shapes, hidden tests, honest TF32 baselines – after establishing that most published kernel "wins" do not survive them.
• Recovered ~6% serving throughput from a tensor-parallel MoE configuration, measured end-to-end under CUDA-graph capture rather than microbenchmarks.
• Delivered Parasail Synth, a zero-to-one LLM workflow prototype, from concept to executive review.
• Designed speculative decoding across disaggregated GPU hosts, moving the draft model off the target node onto Ethernet.
• Drove prompt-compilation research (DSPy) as a per-token margin lever on dedicated-serverless inference.

Technologies: Python, Triton, CUDA, PyTorch, vLLM, SGLang, Nsight Compute, Nix, Docker.

• Implemented operations in the high-level ML library groqapi for advanced machine learning workflows.
• Developed internal and external documentation systems to support both team members and customers.
• Managed internal services, build tooling, and DevOps processes.
• Developed hardware-in-the-loop testing to ensure hardware reliability.
• Built CI/CD pipelines and packaging systems for reliable product delivery to high-stakes customers.
• Optimized developer workflows, removing bottlenecks and improving cycle time by 25%.

Technologies: Nix, Haskell, Python, bash, Docker, many others.

• Developed high-performance data pipelines for UE.co's next-generation platform, enhancing the delivery of car and home insurance sales leads nationwide.
• Engineered highly concurrent services in Haskell, capable of handling 60,000–70,000 leads per minute.
• Integrated lead data from external providers and CSV uploads into a unified processing system.
• Streamlined data scrubbing processes across multiple internal services, improving efficiency and reliability.
• Delivered processed lead data to front-end applications used by a country-wide network of salespeople.

Technologies: AWS, Haskell data pipeline backend, MySQL and AWS Redshift, RESTful API with Swagger docs

• Designed and implemented a distributed, streaming, immutable, event-sourced cloud database for semi-structured enterprise data.
• Developed AI-based microservices to extract structured intelligence from semi-structured data streams.
• Enhanced data accessibility by flexibly extracting intelligible information from customers' data banks.
• Utilized Clojure, Docker containers, and private cloud infrastructure to build and deploy microservices.

Technologies: Clojure and Java, PostgreSQL, ElasticSearch, ArangoDB, Apache Kafka, Apache HBase, REST API with Swagger integration, event sourcing, command query responsibility segregation (CQRS), schema matching

• Developed a system to create and run remote hardware tests for an equipment line.
• Enabled field technicians to collaborate on custom diagnostic tests for individual instruments.
• Connected instruments across the network for seamless remote access and testing.
• Facilitated both remote and on-site execution of hardware diagnostics.

Technologies: Typescript & AngularJS UI, Python backend, CouchDB datastore

• Performed full-stack engineering on a custom e-commerce platform using Ruby on Rails.
• Designed and implemented an application-wide notification system.
• Implemented Continuous Integration and Continuous Deployment (CI/CD) processes.
• Conducted code upgrades and database migrations to enhance system performance.
• Developed a comprehensive test suite to improve code quality and reliability.

Instructor in data science and full-stack web development with Python for new and intermediate students. Contributed to written curricula.

Created two ecommerce systems in PHP, a ClojureScript front-end, and e-magazine site for a local Rochester NY publication.