Senior Backend Developer (Ruby on Rails)

Lisbon - Portugal

Yearly Salary: EUR 60000 - 90000

Posted on: 2 days ago

Vacancies: 1 Vacancy

Job Summary

Sweatcoin is a London-based and well-funded scale-up with a team of 100 and the mission to make the world more physically active. Our iOS and Android apps have more than 150MM installs 15M active users more than 300 commercial partners and confirmed by the independent academic research ability to make our users up to 20% more active.

If you are interested in solving complex problems then we are looking forward to seeing you be a part of our team! Now we have 160K requests per minute half are writing our database is growing by 1% per day 5 million users a day send 15 million records about 50 million requests to the database! In addition you will work on the development of the new features for the project work on improving internal algorithms optimization/scaling of the service protection against fraud and security analytics a / b testing and API projects.

Who we are looking for:

Extensive experience in robust Ruby & Rails API design & development
Ability to carry unclear product requirements to stable clear deployed features
Ability to work autonomously determining what needs to be done and why with little-to-no oversight (think managers of one)
Habitually ensuring new app behaviors are covered by specs to ensure stability
Experience working on high-loaded projects involving cross-functional collaboration
Ability to find a compromise between perfect code and fast delivery
English language not lower than Intermediate

Tech stack:

Ruby 3
Rails 8
Puma
PostgreSQL
Redis
Sidekiq
GCP & AWS

Why join us

Remote-friendly & Flexible working hours. The flexibility is incredible performance is based on output rather than hours spent working our core hours are (10:00-16:00 GMT)
Team building abroad in exciting locations!
Unlimited time-off policy
Two office locations London and Lisbon in case youd like to work from the office sometime
Wellbeing program (up to 2 counselling session per month)
Health Insurance for our employees joining outside UK or PT you have a 1000 yearly allowance.

If you feel that thats a match we would be excited to have you on our team!

Who we are looking for:

Extensive experience in robust Ruby & Rails API design & development
Ability to carry unclear product requirements to stable clear deployed features
Ability to work autonomously determining what needs to be done and why with little-to-no oversight (think managers of one)
Habitually ensuring new app behaviors are covered by specs to ensure stability
Experience working on high-loaded projects involving cross-functional collaboration
Ability to find a compromise between perfect code and fast delivery
English language not lower than Intermediate

Tech stack:

Ruby 3
Rails 8
Puma
PostgreSQL
Redis
Sidekiq
GCP & AWS

Why join us

Remote-friendly & Flexible working hours. The flexibility is incredible performance is based on output rather than hours spent working our core hours are (10:00-16:00 GMT)
Team building abroad in exciting locations!
Unlimited time-off policy
Two office locations London and Lisbon in case youd like to work from the office sometime
Wellbeing program (up to 2 counselling session per month)
Health Insurance for our employees joining outside UK or PT you have a 1000 yearly allowance.

If you feel that thats a match we would be excited to have you on our team!