747 day(s) ago

Senior Fullstack Developer with Security Focus vacancy at Replay Poker

max 60,000 £ per Year

Remote worker location: Worldwide
English: Advanced, Upper Intermediate, Native Speaker
Experience: 3+ years
Employment: Full-time

Replay Poker

United Kingdom, London
Replay Poker is a free-to-play online poker site whose mission is to spread the joy of poker to the world in a fair, friendly and competitive environment, without the risk of losing your shirt.

Our vision is to be the go-to place for passionate poker players to play great poker and improve their game. We will succeed by offering an exceptional poker game experience and never losing our players trust. We celebrate the world’s greatest card game, its rich history and tradition, and seek to inspire others to share in our passion.


We are a small team of highly technical and experienced developers. The small team means you’ll have a huge impact on the decisions and the work being done. The expertise means you’ll get to learn a lot from other great developers. We all work remotely, 100% of the time, and are currently spread out across western Europe and the Americas.

You’ll be responsible for owning the security side of our entire stack. You will evaluate where we are currently and create a plan for addressing any issues you see. You will also help create awareness in the team about proactive security work and establish the changes in routines as needed.

You will also be responsible for maintaining and creating new features on all of our systems together with the rest of the team. These include the poker game client/server, poker lobby and just-as-important auxiliary services, like scheduling and player statistics etc.

We have a huge array of interesting problems to solve such as: clearing a lot of technical debt, preparing the platform for major scaling, adapting our product to run in geographically distributed datacenters while supporting a high speed, low latency game servers, optimising server to client communications, making the client run on new platforms and a lot of others. You will own the product as much as any of us and take collective responsibility in maintaining and improving it over time.

We look for smart and independent people who work best in a team where everyone pulls their weight and collaborates with each other. Proactivity is key so we can improve and expand our systems without micromanagement. You will be given a lot of freedom as long as you can handle the responsibility that comes with it.

We are not afraid of using new technologies when we have to, but know that sometimes boring technology is the best solution. Using the best tools for the job is taken seriously and we expect everyone to be flexible enough to learn and use them, but also courageous enough to challenge old choices and champion change.


Have expert knowledge of Ruby and its surrounding ecosystem
Have very good knowledge of web app security, including previous security work and security evaluation
Have very good knowledge writing automated tests, be it BDD, TDD, etc
Have very good knowledge of modern JavaScript (ES6+, React, Redux etc)
Have very good knowledge of HTML5 and modern CSS (Less/Sass)
Have very good knowledge of SQL and relational databases
Have very good knowledge of Linux/shell
Have good knowledge of Elixir with at least some working experience
Have experience working with job queues, server side caching etc
Have a good understanding of HTTP and REST-ful APIs
Have worked with Websockets/SSE
Be confident working with git, code review and pull requests
Be eager to learn and able to express your thoughts, arguments, and ideas clearly and effectively
Have excellent english language skills (fluent speaking)

Skills considered as a good plus

Have experience with older Javascript frameworks, like Backbone
Have expert knowledge in another language except for Ruby
Have experience with Docker and Kubernetes
Have professional experience working remotely
Have contributed to open source projects
Enjoy playing poker!

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