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Senior Backend Developer - 4035


Senior Backend Developer

  • Primary Location:
  • Contract Type:
  • Employment Basis:

3 extra days of vacation


Internal International Opportunities

Health insurance

Mobile allowance

Choose your Operating System

Learning and Development

Fully provisioned kitchen

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The Role

As a Senior Backend Developer, you are part of a Software Development Team responsible for the full lifecycle of an application.

Reporting to a Delivery Manager in a Blip team formed by 5 Developers and 1 QA, you will be using cutting-edge technologies to deliver amazing value to our customers, while scaling our platform to meet the demands of worldwide markets. You will be required to program well-designed, testable, efficient code to solve business needs, as well as testing and documenting the implemented solutions.

Our Senior Developers are trusted to guide a team of their own. As experts in their area, they're the go-to people for big ideas and problem-solving.


What you will be doing...

As a team player in an Agile Team, working together to keep delivering at pace, scale and with demanded quality to support our products you will be able to:

  • Design and develop technical solutions or processes;
  • Create and confirm high-quality requirements with stakeholders
  • Suggest alternative methodologies that may be more efficient and actively improve the tooling to improve use cases
  • Tackle tasks by researching and weighing up the pros and cons of various routes to select the right approach
  • Be an expert in your primary programming language, and be competent in others
  • Be an expert in your domain (business and tech) who can guide your team on the best approach for large pieces of work which span multiple components and teams.


We are looking for someone who:

  • Has at least 5 years of proven track record of working with Java (preferable, 8+) or similar OOP Languages
  • Has experience working with a high concurrency/high transactional platform
  • Used to work with Client-server protocols such as SOAP, REST;
  • Understand the dependencies between components and how they combine to deliver service to the consumer and business;
  • Easily recognise system deficiencies and implement effective solutions;
  • Has expertise using established design patterns;   
  • Encourages appropriate use of reusability techniques (e.g. design patterns, library extraction, new component creation);
  • Supports and mentor other colleagues.


We´d love to see…

  • Experience working with Kafka and message queueing systems;
  • Knowledge of Scala, Akka, memcached, Apache Storm, Apache Cassandra, ZooKeeper;
  • Awareness and experience in using agile methodologies.
  • Passion for building a great consumer product that our customers will love;
  • Ability to interact effectively with other functional teams;
  • Excellent communicator, common sense and a passion for the art of problem solving

What You'll Get in Return... 

Our passion has helped us take the betting industry by storm. So we think it's only fair that you enjoy excellent rewards.  

The Fun Stuff 

  • Competitive salary and bonus scheme
  • 25 days annual leave
  • Sharesave scheme 
  • Career progression
  • Global mobility 
  • Discounted gym memberships

The office stuff (currently on-hold due to covid-19 restrictions)

  • Games room
  • Snacks and drinks
  • In office shower and locker rooms
  • Health and well being classes (Yoga, bootcamp, etc.)
  • Free breakfast 
  • In office masseuse, nutritionist and ergonomist 

The Boring Stuff 

  • Health insurance
  • Dental insurance
  • Lunch credit
  • Health assessments
  • Travel allowance
  • Own your own laptop scheme
  • Thousands of online learning courses
  • Mobile allowance
  • Employee Assistance Programme 

There is more, but we won't go on... 


Close map
Avenida de Camilo 96, Porto, Portugal, 4300-492

This is who we are

Blip is a Tech and Innovation Hub with a strong knowledge in software development, mobile apps, web platforms and retail applications for betting and gaming.

We are part of Flutter Entertainment – one of the World´s Largest Groups in the bookmaking industry, with an annual revenue of around 2 billion euros. The Code we develop, powering brands such as PaddyPower, Betfair and Fanduel, is used by over 5 million people in more than 100 countries and we are in the API Billionaire Club alongside players such as Google, Facebook and Twitter.

The Missing Piece

At Blip people always come first, that’s why we believe we can complement each other. You are our missing piece to be a better company, to build a better business for everybody, including ourselves.On the other hand, we are your missing piece, giving you the flexibility, work life balance and the tech challenge you´re lacking.
It all starts here!

This is your Challenge

  • Delivering product at scale for over 5 million customers, 99,9% of transactions in less than a second
  • Our systems process more than 7 million transactions every day (more than all the European stock exchanges combined)
  • Deliver high transitional products, serving more than 2.5Bn calls a day
  • Diverse and up to date technical landscape to explore, leverage and innovate
  • The products you’ll develop will comply with ambitious uptime targets: less than 50 minutes downtime expected per year
  • Continuous Integration, Deployment and Testing