Justin Streufert

Experience

I've had the privilege to learn from the best and to take responsibility for impactful work at organizations large and small. I've continually absorbed new technologies and practices while gaining the wisdom to discern true innovations from passing fads.

2021-Present

Claritype

Application Architect

As the startup's founding engineer, shaped the architecture, design philosophy and feature set of the company's flagship data analysis product.
Led front-end engineering, maintaining quality through rapid growth of the product and team. Set standards for human and LLM contributions to control tech debt and quickly deliver new features.
Guided the company into the AI era by deeply integrating LLM-based features throughout the product at the forefront of fast-evolving capabilities.
Designed a novel query language and semantic data representation. These let users collaborate fluently with AI to get verifiable answers to their questions, without the need to understand the underlying disparate systems of record.
Architected DSLs, APIs, wire formats and workflows to seamlessly orchestrate the many moving parts of the product, prioritizing the flexibility to meet changing requirements.
Worked with customers to identify features and design interfaces that truly addressed their needs, and give them tools they didn't yet know they needed.
Stayed hands-on in a small engineering team, contributing hundreds of thousands of lines of code with TypeScript, Vue, Python and Node.js.

2020-2021

BetterUp

Full-Stack Engineer

Successfully drove complex user-facing features from design through to delivery and maintenance, working to achieve design consensus and delegating to team members.
Accomplished complex migrations with zero downtime on a busy system where users took part in scheduled live sessions around the clock.
Worked across the full stack including cloud services, databases, back-end and front-end to fluently solve problems.
Managed authentication/authorization and access controls in an environment where maintaining user data confidentiality was crucial.

2012 - 2020

Palantir

Forward Deployed Engineer

Headed design and front-end development of a new data analysis product. This tool opened new areas of business for the company by enabling non-technical users to flexibly query and analyze large and complex data sets. At the high-profile organizations where it was deployed, it consistently allowed users of all skill levels to produce actionable insights.
Designed and built novel interactive visualizations to allow human-scale views of huge data sets. These brought trends, outliers, and unusual activity into focus.
Designed and rapidly prototyped critical web apps for an international broadcasting company. Created adaptive interfaces that balanced flexibility and simplicity, meeting the needs of both advanced users and busy executives.
Iterated in a tight loop with users to build interfaces that truly served their needs, balancing individual use cases with product generality.
Contributed quality code across a spectrum of codebases from back-end Java and Ruby to front-end TypeScript with React/Redux.

2011 - 2012

Curb Mobility

Sr. Software Engineer

Led design and development of diverse projects, including a new web app to allow the company to move upmarket, a mobile app for ride-hailing, OTA video content synchronization, and a rebuild of the company's core finance platform.

2010 - 2011

Wireless Matrix

Sr. Software Developer

Designed and developed a highly configurable desktop-class web-based data analytics application serving the diverse needs of fleet telematics customers.

2009 - 2010

Computech

Ruby Developer

Developed full-stack Ruby on Rails apps at the Executive Office of the President of the United States.

Selected Skills

I'm happiest when I'm learning something new. Here's some of what I've learned so far.

Tech Leadership

I've successfully architected systems for the long term and evolved them as needs changed. I believe that thoughtful architecture is the key to keeping tech debt low, and flexibility and delivery speed high.

AI Integration

I've harnessed LLMs to enrich products with novel features and workflows — not just bolt-on chatbots. I deeply understand the inherent security, accuracy and cost concerns so I can drive responsible use of these powerful tools.

Web Front-End

I build performant, maintainable, reliable, thoughtful front-ends at any level of complexity using modern technologies and techniques. Most recently these have included TypeScript, Vue, Tailwind, React and others.

UX and UI Design

I've taken multiple products and features through every phase of design. I advocate for user needs while remaining grounded in technical reality. When complexity threatens to overwhelm users, I work tirelessly to achieve balance.

Back-End

I've designed and implemented numerous RESTful, real-time, graph and query APIs and services using Node, Java, Ruby, and Python backed by all kinds of data stores and cloud environments.

Patents

I'm listed as an inventor on six patents related to my interface design and architecture work.