Jeremy Nuttall

λ ▏

I'm a principal engineer and tech lead at Well.co, where I build healthcare software and think about distributed systems more than is probably healthy. I lead cloud infrastructure and platform architecture — the kind of work where the problems are interesting precisely because they shouldn't exist.

Off the clock I write Haskell, which is either a programming language or a coping mechanism depending on who you ask. My cat and my toddler have independently concluded that my keyboard is a toy. They are not wrong.

Experience

Well

Jun. 2024 – present

Principal Software Engineer & Tech Lead

AWSAWS LambdaECSCognitoSSOSAMLTypeScriptHaskellDynamoDBPostgreSQL

Driving cloud infrastructure and architecture optimizations, identifying redundant infrastructure and scaling bottlenecks, devising remediation plans, and delegating execution across the team.
Leading teams toward technical excellence with architectural clarity — owned, implemented, and maintained critical security infrastructure, delivering enterprise-grade, audited features end-to-end.
Building and shaping the services team through hands-on technical leadership and hiring.

Well

Sep. 2022 – May. 2024

Senior Software Engineer

ReactAWSAWS LambdaNode.jsTypeScriptDynamoDBHaskellKinesis

Spearheaded a large-scale TypeScript migration, defining the conversion strategy and runtime validation patterns that became the team's technical foundation.
Identified and resolved backend performance bottlenecks through APM profiling, shipping optimizations across the services platform.
Mentored engineers on TypeScript adoption and authored the team's coding standards.

Triplebyte

Nov. 2021 – Sep. 2022

Senior Software Engineer

Ruby on RailsReactPostgreSQLTypeScriptNode.js

Owned test integrity for a large-scale engineer assessment platform, designing and shipping anti-fraud and plagiarism detection systems end-to-end.
Built the employer-facing activation experience, improving onboarding completion and instrumenting analytics across the full conversion pipeline.

Appstem

Jun. 2021 – Nov. 2021

Software Engineer (Project Lead)

ReactNode.jsTypeScriptReact NativeAWS LambdaGCP

Led project delivery as primary client-facing technical contact, shipping a membership-based React Native application (Google Firebase backend) from scratch to production; simultaneously delivered e-commerce features for KFC's mobile application as a subcontractor.

eQ Technologic

Jul. 2019 – Jun. 2021

Software Engineer

TypeScriptSpring FrameworkJavaAngular

Delivered 20+ client-facing web applications for government and defense contractors, reverse-engineering an undocumented enterprise platform to do it.

View Full Résumé

Projects

[hackage] pure-noise

Blistering fast procedural noise generation, in pure Haskell

~160M values/secPorted and optimized from C++ FastNoiseLite with algebraic composition

Procedural noise generation for Haskell — Perlin, OpenSimplex2, cellular, and value noise. Noise functions compose algebraically using standard Haskell functionality and perform at ~84–95% of equivalent C++ when compiled with GHC's LLVM backend.

Haskell

Repo

[hackage] heph-aligned-storable

Compile-time GPU memory layout guarantees

0 runtime overheadGeneric derivation of spec-compliant Storable instances (std140, std430, scalar)

Generic derivation of Storable instances for GPU memory layouts (std140, std430, scalar). Type-level layout witnesses prevent mismatches at compile time, and GHC eliminates the generic machinery entirely — zero runtime overhead.

Repo

[hackage] heph-sparse-set

Really fast mutable sparse sets

A mutable sparse set for Haskell with O(1) insert, delete, and lookup. Designed for ECS architectures where per-frame data structure performance matters. Up to 67x faster updates than IntMap on the right workloads.

Haskell

Repo

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