# Timothy Lewis

Timothy Lewis is a remote worker on Himalayas, Senior Ruby Backend Developer at Freelance, based in Germany.

Source: https://himalayas.app/@timothylewis1

```text
Senior Ruby backend developer building Shopify apps, including Stakeout, a product price-comparison app.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Germany |
| Authorized to work in | Germany, United States |
| Salary expectations | 50k+ EUR |
| Job categories | Backend Engineer |
| Skills | Ruby, Ruby on Rails, Backend Development, Billing Systems, Subscription Systems, REST API Design, Shopify App Development, Third Party Integrations, AI Powered Applications, Ruby on Rails Upgrades, PostgreSQL, Redis, Sidekiq, Grape, Heroku |
| Website | https://timlewis.name |
| Portfolio | https://onstakeout.com |
| LinkedIn | https://linkedin.com/in/timslinkedin |
| GitHub | https://github.com/timlewis |

## About

```text
I’m currently developing Shopify apps and other freelance projects, including Stakeout, a price-comparison app that fetches prices for the same or similar products from online sources. I built it with Rails 8 and Shopify integrations.

At Vaha / etone Motion Analysis GmbH, I helped build the Vaha Fitness Mirror from scratch, including its backend API and subscription and billing system. I designed and built the central billing system for recurring revenue, and led a five-developer backend team in my final year there.

At Pixformance Sports, I designed and built major parts of the REST API for Smart Trainers and led a Rails 4-to-5 upgrade of a large production codebase with no downtime. Earlier, I contributed to its Rails backend and built Puppet-managed infrastructure.
```

## Experience

### Senior Ruby Backend Developer (current)

Freelance. Apr 2024 - Present

```text
Self-employed, focused on Shopify app development and other freelance projects, including a price comparison app and an AI-powered website generation system.
```

Skills: Ruby-on-Rails, Hotwire, Turbo, Stimulus, Polaris-ViewComponents, esbuild, PostgreSQL, Solid-Queue, Shopify-Apps, JWT, Shopify-App-Bridge, SerpAPI, Cloudflare-Workers, Flue, SQLite, Acidic-Job, Ruby-LLM, Tailwind

### Senior Ruby Backend Developer

Vaha / etone Motion Analysis GmbH. Jul 2019 - Apr 2024

```text
Led the backend team and designed the billing and subscription system for the Vaha Fitness Mirror, handling recurring revenue for ~1,000 subscribers. Built a unified messaging stack for customer communication.
```

Skills: Ruby-on-Rails, Grape, Redis, Sidekiq, PostgreSQL, Heroku, Shopify, ChargeBee, Stripe, Sendgrid, OneSignal, Twilio

### Ruby Backend Developer

Pixformance Sports. Jul 2017 - Jul 2019

```text
Led a Rails 4 to 5 upgrade of a large production codebase with no downtime. Designed and built major parts of the REST API serving Smart Trainers and frontend clients.
```

Skills: Ruby-on-Rails, Redis, Sidekiq, PostgreSQL, Heroku

### Windows/Linux Server Administration / Devops-Backend-Infrastructure

Pixformance Sports. Feb 2014 - Jul 2017

```text
Joined as a network administrator with a growing focus on backend development. Contributed to the Ruby on Rails backend for device communication and built a decentralized, fault-tolerant Puppet-managed infrastructure.
```

Skills: Ruby, Ruby-on-Rails, Puppet, Active-Directory, Heroku

## Education

### University of South Africa

Bachelor of Science, Computer Science/Information Systems. 2010 - 2015

```text
Bachelor of Science in Computer Science/Information Systems obtained through distance learning from the University of South Africa.
```

### SOLMS Training and Consulting

Java programming, object-oriented analysis & design (UML), distributed systems, Computer Science. 2001 - 2001

```text
Completed training in Java programming, object-oriented analysis & design (UML), and distributed systems.
```

## Tech stack

- Sidekiq
- Chargebee
- PostgreSQL
- SQLite
- Ruby on Rails
- Tailwind CSS
- Redis
- Hotwire
- Java
- Ruby
- Fly
- Grape
- OneSignal
- Stripe
- Heroku
- Puppet
- SendGrid
- Twilio
- Stimulus
- Cloudflare Workers
- Esbuild
- Cloudflare D1
- Cloudflare R2

To contact Timothy, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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