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Senior Blockchain Engineer - Citi Integrated Digital Assets Platform
Citi —Dublin, County Dublin
Bachelor’s degree in CS or Engineering; MS or PhD in computer science, or related discipline a plus. Excellent computer science fundamentals: demonstrable…
€85,600–€128,400 a year

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2026 Fall Co-Ops - Software Development - Demonware (Dublin)

Activision -
Dublin, County Dublin

Apply Now

Job details

Qualifications

CI/CD
TCP
Kubernetes
Data structures
UNIX
Git
Java
Bash (Unix shell)
SQL
C++
REST
Scripting
Linux
TCP/IP
Groovy
Communication skills
Python
Debugging
MySQL
Workday

Full job description

Category: Other

reqId: R027550

Location: Dublin, Ireland

Job Title:

2026 Fall Co-Ops - Software Development - Demonware (Dublin)

Requisition ID:

R027550

Job Description:

This role is based onsite at the Demonware Dublin office, onsite.

About Demonware

Demonware is a member of the Activision family of studios, partnering with engineers and creatives across AAA game studios to deliver the online and data services that power some of the world’s biggest franchises — including Call of Duty and Crash Bandicoot.

We’re a technology company that values openness and collaboration. We believe the best ideas win, everyone should feel empowered to contribute, and while we take our work seriously, we don’t take ourselves too seriously.

At Demonware, you’ll find big-company challenges with a small-company culture. We support millions of concurrent users and work with technologies such as Python, C++, Java, Linux, MySQL, Erlang, and Kubernetes. Our co-op students make real contributions — many see their code running in production within days of joining.

Co-op Program Requirements

Currently enrolled in a post-secondary or graduate program

Expected graduation between January 2027 and May 2028

Available for an 8-month, in-person co-op starting September 2026

Clear written and verbal communication

Strong debugging, analytical, and problem-solving skills

Resume and transcript required

As part of the interview process, candidates will be required to complete an automated coding assessment

Specific Role Requirements

Software Engineering

Software Engineering Co-ops have touched many aspects of Demonware. Needs may shift across each team, but co-ops in the past have helped build multiplayer features, develop core backend systems, and design tools for largescale distributed services. They gain hands-on experience working with Kubernetes infrastructure, automation frameworks, and scalable data pipelines. Throughout the co-op, they collaborate in design discussions, perform root cause analysis, and automate workflows to improve reliability, performance, and developer experience.

Requirements:

Strong knowledge of Python, C++, and/or Java

Solid understanding of algorithms and data structures

Familiarity with Linux and source control (Git preferred)

Knowledge of networking fundamentals (TCP, UDP, HTTP)

Nice-to-Have Skills:

Experience with SQL-based databases (MySQL preferred)

Familiarity with CI/CD concepts and tools for automating build, test, and deployment

Familiarity with Kubernetes

Exposure to security and scalability concepts

Experience building RESTful services or web applications

Clear passion for computer science showcased through personal projects, or extracurricular activities preferred

Site Reliability Engineering (SRE)

Site Reliability Engineering Co-ops maintain and evolve Demonware’s platform while contributing to the design of highly reliable operational architecture. Co-ops ensure services are scalable, maintainable, and built for players worldwide, working closely with cross disciplinary teams throughout the development lifecycle. They also collaborate with experienced engineers across global offices, gaining exposure to high impact, large scale systems engineering.

Requirements:

Strong knowledge of Python, C++, and/or Java

Solid understanding of algorithms and data structures

Experience with SQL-based databases (MySQL preferred)

Knowledge of networking fundamentals (TCP, UDP, HTTP)

Familiarity with Linux and source control (Git preferred)

Scripting experience (Bash, and/or Groovy)

Knowledge of foundational technologies such as TCP/IP and Linux/Unix internals

Nice-to-Have Skills

Familiarity with Kubernetes

Multi-platform development experience

Exposure to security and scalability concepts

Experience building RESTful services or web applications

How to Stand Out

We encourage you to highlight:

Specific contributions on previous work/projects

Any Linux experience (school, personal, or home projects)

Programming-related hobbies or personal projects

Notable school assignments

Open-source contributions

Links to code repositories, portfolios, or technical blogs

Office Perks

Complimentary breakfast, lunch, and drinks from a fully stocked kitchen

BBQs and Lunch & Learns

City-center office location

Vacation allowance

Competitive pay

Free games

How to Apply

You can apply directly at demonware.net. Applicants will hear back from a recruiter or WorkDay by August 2026.

The standard base pay range for this role is annually. Your Talent Professional can share additional details for this role during the hiring process.

We love hearing from anyone who is enthusiastic about changing the games industry. Not sure you meet all qualifications? Let us decide! Research shows that women and members of other under-represented groups tend to not apply to jobs when they think they may not meet every qualification, when, in fact, they often do! At Activision Blizzard, we are committed to creating a diverse and inclusive environment and strongly encourage you to apply.

Our World

At Activision, we strive to create the most iconic brands in gaming and entertainment. We’re driven by our mission to deliver unrivaled gaming experiences for the world to enjoy, together. We are home to some of the most beloved entertainment franchises including Call of Duty®, Crash Bandicoot™, Tony Hawk’s™ Pro Skater™, and Guitar Hero®. As a leading worldwide developer, publisher and distributor of interactive entertainment and products, our “press start” is simple: delight hundreds of millions of players around the world with innovative, fun, thrilling, and engaging entertainment experiences.

We’re not just looking back at our decades-long legacy; we’re forging ahead to keep advancing gameplay with some of the most popular titles and sophisticated technology in the world. We have bold ambitions to create the most inclusive company as we know our success comes from the passionate, creative, and diverse teams within our organization.

We’re in the business of delivering fun and unforgettable entertainment for our player community to enjoy. And our future opportunities have never been greater — this could be your opportunity to level up.

Ready to Activate Your Future?

The videogame industry and therefore our business is fast-paced and will continue to evolve. As such, the duties and responsibilities of this role may be changed as directed by the Company at any time to promote and support our business and relationships with industry partners.

We are committed to working with and providing reasonable assistance to individuals with physical and mental disabilities. If you are a disabled individual requiring an accommodation to apply for an open position, please email your request to [email protected]. General employment questions cannot be accepted or processed here. Thank you for your interest.

Apply Now

Refine Your Search

java engineer/developer jobs

2026 Fall Co-Ops - Software Development - Demonware (Dublin)

Senior Blockchain Engineer - Citi Integrated Digital Assets Platform

Senior Software Engineer - Integrations & Partnerships

Software Security Operations Engineer, Senior - Cork, Ireland

Engineering Manager (Data Processing) (Remote - Ireland)

Full-Stack Engineer, Senior Vice President

Sr Software Engineer - SAP Commerce Cloud

Systems Development Engineer, Amazon Foundational Security Services

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Lead Software Engineer (Python, Node.js, AWS, AI/ML)

QA Automation Engineer Team Lead, Charles River Development , AVP

Sr. Software Eng, Data Platforms

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