Senior Backend Engineer

6 days ago


Athens, Attica, Greece Kaizen Gaming Full time €35,000 - €55,000 per year

We are Kaizen Gaming
Kaizen Gaming, the team powering Betano, is one of the biggest GameTech companies in the world, operating in 19 markets. We always aim to leverage cutting-edge technology, providing the best experience to our millions of customers who trust us for their entertainment.

We are a diverse team of more than 2.700 Kaizeners, from 40+ nationalities spreading across 3 continents.

Our #oneteam is proud to be among the Best Workplaces in Europe and certified Great Place to Work across our offices. Here, there'll be no average day for you. Ready to Press Play on Potential?

Let's start with the role
You will join an autonomous Agile team and work closely with the Product Owner, Agile Delivery Lead, Automation Testers, and other Software Engineers to create a competitive advantage for Kaizen and offer a unique online experience to our customers. Besides being part of the Agile team, you will work closely with talented backend professionals within the Backend Chapter.

As a Senior Software Engineer you will:
Senior Software engineers in Kaizen are responsible for a multitude of projects, from our customer-facing websites and mobile applications to our admin and internal tools and backend services, most of them withstanding high volume / traffic.

  • Assume full responsibility for our applications on an engaging development journey.
  • Create new solutions and see them through, from conception to production;
  • Turn requirements into simple and sophisticated technological systems. Our large scale, highly available infrastructure is at the core of that challenge;
  • Play a central role on Design, build, and maintain efficient, reusable, and reliable code;
  • Research new technologies to find new and efficient ways to solve day to day challenges;
  • Ship high-value features quickly;
  • Challenge the status quo and improve the team and product;

Tech stack
Most of our sites and services are written in in C# / ASP.NET and new services are written in .NET Core. New applications use or Angular in the front-end while older ones use server-rendered (Razor) views in combination with jQuery. Microsoft Orleans enables our scalable and robust distributed applications. MS SQL Server is used for most of our storage needs, but also Redis and ElasticSearch are used when it makes sense to do so. RabbitMQ is our go-to message broker. We use Gitlab for code versioning and CI, and the Atlassian stack for tickets and documentation.

What you'll bring

  • At least 4 years of experience developing production-level software using .NET Core;
  • Proficient in C# and MVC;
  • Experience with Testing/Metrics Monitoring/Logging on a large scale distributed system;
  • Experience with Microservices architecture;
  • Experience with asynchronous flows using message brokers;
  • Good understanding of basic web technologies, such as HTTP, REST, etc.;
  • Practical knowledge of algorithms and design patterns;
  • Passionate about delivering high-quality code;
  • Fluent in English, both oral and written.

Nice to have:

  • Expertise in concurrency, multi-threading, and event-driven architecture;

Kaizen Gaming Perks

  • Hybrid way of working
  • A buddy will support you with your onboarding
  • Competitive pay & bonus scheme
  • Private health insurance for you and your family
  • Monthly meal allowance
  • Developmental 360° feedback framework
  • Unlimited access to Udemy & continuous training

Recruitment Privacy Notice
Regarding the data you share with us, you may find and read our recruitment privacy notice here.

We are an equal opportunity employer committed to fostering a diverse and inclusive workplace. We welcome applications from individuals of all backgrounds, regardless of race, gender, religion, sexual orientation,or age.



  • Athens, Attica, Greece BILLYS Full time €60,000 - €80,000 per year

    Senior Backend EngineerWho we are :Billys is a rapidly growing startup in the Building Management SaaS sector. We focus on providing seamless solutions for tenants, owners, and building managers, utilising a cutting-edge tech stack including Node, Express, React, and MongoDB. Our platform already serves clients in multiple languages and is positioned for...


  • Athens, Attica, Greece Quadible Full time €40,000 - €80,000 per year

    Senior Backend EngineerQuadibleis cybersecurity startup with entities in UK and Greece that helps organisations mitigate fraud, improve customer satisfaction and reduce cost through a unique continuous behavioural authentication. It is an AI-platform that continuously authenticate users, without the need for any user input, by learning their behavioural...


  • Athens, Attica, Greece Harbor Lab Full time €60,000 - €120,000 per year

    ABOUT HARBOR LAB Founded in 2020 in Greece, Harbor Lab is a fast-growing B2B maritime tech company on a mission to simplify and optimize port cost management. Our end-to-end, AI-powered SaaS platform transforms how Shipowners and Shipmanagers handle Disbursement Accounts (DAs), bringing automation, real-time data, control and transparency to one of the...


  • Athens, Attica, Greece HarborLAB Full time €45,000 - €90,000 per year

    About Harbor Lab Founded in 2020 in Greece, Harbor Lab is a fast-growing B2B maritime tech company on a mission to simplify and optimize port cost management. Our end-to-end, AI-powered SaaS platform transforms how Shipowners and Shipmanagers handle Disbursement Accounts (DAs), bringing automation, real-time data, control and transparency to one of the most...


  • Athens, Attica, Greece HARBOR LAB Full time

    ABOUT HARBOR LABFounded in 2020 in Greece, Harbor Lab is a fast-growing B2B maritime tech company on a mission to simplify and optimize port cost management. Our end-to-end, AI-powered SaaS platform transforms how Shipowners and Shipmanagers handle Disbursement Accounts (DAs), bringing automation, real-time data, control and transparency to one of the most...


  • Athens, Attica, Greece Harbor Lab Full time

    ABOUT HARBOR LAB Founded in 2020 in Greece, Harbor Lab is a fast-growing B2B maritime tech company on a mission to simplify and optimize port cost management. Our end-to-end, AI-powered SaaS platform transforms how Shipowners and Shipmanagers handle Disbursement Accounts (DAs), bringing automation, real-time data, control and transparency to one of the...


  • Athens, Attica, Greece Desquared Full time €45,000 - €90,000 per year

    AtDesquared, we're on a mission to build the world's mostloved digital products, shaping lasting relationships with team members and clients, promoting business growth and personal happiness.Our meticulously crafted proprietary products and our award-winning agency work have enabled us to partner with industry leaders such as Deutsche Telekom, Cosmote,...

  • Backend Engineer

    2 weeks ago


    Athens, Attica, Greece Engel & Völkers Full time €60,000 - €90,000 per year

    Do you want to play an instrumental role as a (Senior) Backend Engineer (m/f/d)* - Java / Spring Boot in a time of amazing growth? Read on to learn moreFor our new Tech Hub in Athens – launching in November 2025 – we are seeking for you as a (Senior) Backend Engineer (m/f/d)* - Java / Spring Boot in full-time (40 hours). We are looking for motivated and...


  • Athens, Attica, Greece Qualco Full time €60,000 - €120,000 per year

    At Quento, the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic...


  • Athens, Attica, Greece AI2CYBER Full time €90,000 - €120,000 per year

    Location: RemoteType: Full-timeExperience Level:Senior LevelAbout the RoleWe are seeking aSenior Full-Stack Software Engineerwith at least 7+ years of professional experience in Pythonand 7+ years in React. This isnot a junior position- the role requires a proven track record of delivering complex systems, where obstacles can only be overcome with hands-on...