Senior Full Stack Developer - C# & Flutter

Clonshaugh Business and Technology Park, Dublin, Ireland

Full Time

Experienced

Position: Senior Full Stack Developer - C# & Flutter
Location: Dublin, Ireland (Hybrid)

Move Security Forward with Acre
Are you passionate about transforming the future of security? Do you thrive in a collaborative, innovative environment where your contributions drive real impact? If so, Acre Security is the place for you. Join us in making the world a safer place — one innovation at a time.

About Acre
At Acre, we're not just building security solutions — we’re empowering security professionals to adapt and thrive in a rapidly changing world. Since our inception in 2012, Acre has been at the forefront of innovation in access control, visitor management, and intrusion software. Our solutions are trusted by organisations in over 25 countries, delivering smarter, more adaptable, and easier-to-use security technologies that protect what matters most.

Your Impact
We are looking for a Senior Full-Stack C# Developer to join our team in Dublin and to develop our next-generation enterprise Intrusion application. You’ll join a talented and collaborative team of developers in designing and delivering a cutting-edge enterprise application. This high-volume system leverages an event-driven architecture to enable seamless communication with hundreds of thousands of devices, ensuring security, scalability, and reliability in a global context.

What You’ll Do:

In addition to the above, your key responsibilities will include:

Contribute to the design of the system, collaborating with the development team and external stakeholders.
Contribute to agile sprint planning and delivery.
Take ownership of the development of microservices, front-end components, APIs, data manipulation and communication interfaces.
Deliver clean, maintainable, well-designed and tested code.
Participate in code reviews, and contribute to constant code improvement, ensuring that applications follow best practices.
Analyse and debug complex technical issues.
Stay up to date with emerging trends, and share your knowledge and experience across the team, while fostering a culture of collaboration and innovation

What You'll Bring

6+ years of experience with ASP.NET Core and familiarity with modern front-end frameworks (Flutter preferred).
Experience with REST APIs, inter-service communication with MQTT, and databases (SQL Server, MongoDB).
Strong understanding of clean code, SOLID principles, design patterns, and modern enterprise application design.
Experience building cloud-based applications (on AWS or Azure) with Docker, DevOps pipelines, and Linux.
Familiarity with pub-sub architectures, microservices, and distributed systems.
Experience with Unit & Integration Testing, and proficiency with Git and GitHub.
Strong analytical, communication, collaboration and teamwork abilities.
Detail-oriented, well-organised, and eager to learn new skills and build great software.

What’s in It for You
We strive to do more than just match your ambitions — when you join Acre, you’ll have access to a range of exciting opportunities:

Be part of a disruptor – Help move security forward with a company that challenges the status quo and redefines industry standards.
Learn from industry leaders – Work alongside experts and innovators driving real change in security technology.
Drive meaningful impact – Your work will directly contribute to pioneering security technologies that protect businesses and communities worldwide.
Advance your career – Access professional development opportunities, including training programs, mentorship, and industry events.
Enjoy competitive rewards – We offer a competitive compensation package, performance-based incentives, and a comprehensive benefits program that reflects your contributions.

Join the Future of Security
At Acre, we’re moving security forward. If you're ready to make an impact in a fast-moving, innovative industry, we’d love to hear from you.

Acre is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

Apply for this position

Required*

First Name*

Last Name*

Email Address*

Phone*

Address*

Resume*

We've received your resume. Click here to update it.

Attach resume or Paste resume

Attach resume as .pdf, .doc, .docx, .odt, .txt, or .rtf (limit 5MB) or Paste resume

Paste your resume here or Attach resume file

This is a hybrid role. Do you live in Ireland and are you able to commute to North Dublin 3 days a week?*

Are you eligible to work in Ireland without any visa restrictions?*

What is your salary expectation?*

How many years of experience do you have with C# and .Net Core?*

Describe in detail, an instance where you resolved a technical issue in C#?*

Detail your experience and years of experience with a modern front-end framework like Flutter, React, Angular or Vue?*

Describe in detail, an instance where you resolved an issue either in SQL or NoSQL*

Describe in detail, an instance where you have applied the SOLID principals*

Describe in detail, an instance where have you implemented a design pattern?*

If you are familiar with large-scale, event-driven architecture, or microservices, describe in detail an implementation you have used and the challenges faced.*

If you have used Unit Tests & Test Driven Development, describe how you have used them and the biggest benefit of Unit Tests?*

Have you been referred by an acre employee? If so, please name the employee.

Are you familiar with Docker and Linux? If yes, describe your experience, and images you have used.*

Have you worked with gRPC or MQTT APIs and managed inter-service interactions? If yes, describe your experience.*

Do you have any exposure to hardware devices, IoT or TCP/IP level communications?*

Describe your experience of AI, Agents and LLMs in your development workflow. More generally, how do you keep up to date with the evolution of software development?*

Human Check*

Submit Application

CAREERS AT ACRE

At acre security, we are dedicated to revolutionizing the physical security industry with cutting-edge solutions and unparalleled service. If you're passionate about innovation, eager to tackle challenging projects, and ready to make a tangible impact, we invite you to join our dynamic team.

Explore our current openings and apply today to be a part of something extraordinary at acre.

Senior Full Stack Developer - C# & Flutter

Apply for this position