Jon Rowe
Verified Expert in Engineering
Back-end Developer
Southampton, United Kingdom
Toptal member since October 6, 2022
Jon is an experienced Elixir and Ruby developer with around 18 years of commercial experience. He's been working primarily in Elixir (with some Ruby) for the last five years and was a Rails developer before that. Jon considers himself a specialist in test-driven development and is a current maintainer of RSpec. He's built a lot of apps from the ground up and has helped improve code quality on existing apps, everything from performant data warehouses to large eCommerce sites.
Portfolio
Experience
- Test-driven Development (TDD) - 18 years
- Ruby - 18 years
- RSpec - 18 years
- Concurrent Programming - 18 years
- PostgreSQL - 18 years
- Phoenix - 8 years
- Elixir - 8 years
- Phoenix LiveView - 5 years
Preferred Environment
MacOS, Elixir, Phoenix, PostgreSQL
The most amazing...
...team I've worked with delivered the rewrite of the second-largest car marketplace in the US into Elixir, increasing performance and decreasing user wait times.
Work Experience
Senior Consulting Elixir Engineer
Freelance Clients
- Worked closely with founders to produce MVPs for early-stage customers and investors. Demoed products to secure funding to build more extended-term teams.
- Provided extra development support to existing teams to help meet deadlines under pressure. Involved ramping up quickly and being productive without draining the current team and preventing them from missing key business or regulatory deadlines.
- Maintained and upgraded projects to keep them secure and performant years after their initial development. Provided long term stability to the customers expanding the project life by another three years.
- Increased performance by analyzing database operations and refactoring to remove bottlenecks, and add aggregates resulting in a ten times performance gain (500ms to sub 50ms response times) for a large data warehouse.
Experience
Flowerwork.io (Contract)
Forward/GetThru.io
Mortgage Broker Tools
Erlang Solutions/Cars.com
Education
Master’s Degree in Software Engineering
Sheffield University - Sheffield, UK
Skills
Libraries/APIs
REST APIs, OpenGL
Tools
RSpec, Git
Languages
Elixir, Ruby, HTML, GraphQL, CSS, JavaScript, Elm, CSS3, Java, C++, Objective-C
Frameworks
Phoenix, Ruby on Rails (RoR), Tailwind CSS
Paradigms
Concurrent Programming, Agile Software Development, Test-driven Development (TDD), REST, Functional Programming, Kanban
Platforms
MacOS, Amazon Web Services (AWS), Salesforce, Kubernetes, Docker
Storage
PostgreSQL
Other
Phoenix LiveView, Back-end, Web Development, Full-stack, Pub/Sub, Architecture, CI/CD Pipelines, Fly.io, Distributed Systems, Message Queues, Email Marketing, Email Marketing Automation
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