Senior Backend/Full Stack Software Engineer

viotas; Limerick; On-site; EUR 85,000 - 110,000; Full time

Benefits offered by this job

Healthcare

Pension

Training budget

Training leave (10 days)

Annual bonus

25 days annual leave

Death in service

People & Culture club

Job summary

VIOTAS in Limerick, Ireland, seeks a Senior Backend/Full Stack Software Engineer for the Platform Development Team. Hybrid/Remote work; the role emphasizes backend development with full stack capability.

You will design and implement scalable features across the platform, collaborate with cross-functional teams, and optimize performance. The ideal candidate has 5+ years in full stack development, strong TS/JS backend experience, and hands-on AWS, Docker, Kubernetes, and GraphQL skills.

Qualifications

• 5+ years of professional experience in full stack development.
• At least 3 years backend development using TypeScript & JavaScript on NestJS or NodeJS.
• Experience with graph databases (Neo4J) and GraphQL query technologies.
• Strong understanding of RESTful API design and DevOps workflows.
• Hands-on AWS experience and containerization with Docker/Kubernetes.
• Familiarity with microservices, Agile methodologies, and CI/CD.
• Excellent problem-solving and teamwork skills.

Responsibilities

• Design, develop, and maintain scalable backend and related features.
• Collaborate with cross-functional teams to plan and deliver new capabilities.
• Optimize performance, scalability, and reliability of the platform.
• Write clean, maintainable code and perform code reviews.
• Work with DevOps to manage AWS deployment and CI/CD pipelines.
• Contribute to testing platforms and automated unit tests.
• Evaluate new technologies to improve development efficiency.

Skills

Full stack development

Backend development

TypeScript / JavaScript

RESTful API design

Agile development

Tools

GitLab CI/CD

Docker

Kubernetes

AWS

NestJS / NodeJS

GraphQL

Job description

We are looking for a highly skilled and motivated engineer to work with us in our Platform Development Team. If you are looking for a challenging, fast-paced and sustainable work environment, this may be the role for you.

VIOTAS develops smart grid technologies and services that make electricity grids greener and more efficient. Our innovation team has developed a sophisticated tech stack which includes IoT hardware sensors, embedded and cloud-based software systems. These real-time systems combine to monitor the needs of the grid and can respond faster than the blink of an eye to grid events and imbalances.

About VIOTAS:

VIOTAS is a market leader in smart grid technology and demand response services. Headquartered in Limerick with global offices in Melbourne, Krakow, and Texas (U.S.), VIOTAS enables commercial and industrial clients to actively participate in electricity markets, generating revenue while supporting renewable energy integration and grid stability.

Recognised internationally for innovation and growth, VIOTAS plays a critical role in building a sustainable energy future and was named Ireland’s fastest-growing technology company at the Deloitte Fast 50 Awards in 2019.

Key Responsibilities:

As a Senior Backend/Full Stack Software Engineer, you will work with the team to take technical ownership for the design and implementation of high-level feature requests which often span multiple components within the platform infrastructure. We have a mix of front-, backend- and full stack developers on our team – our ideal candidate would have full stack capabilities but this specific role is backend focused and is suitable for talented engineers with a preference for backend development. Core responsibilities of the role include:

• Design, develop, and maintain scalable and high-performance applications.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Optimize the stack and applications for maximum speed and scalability.
• Write clean, maintainable, and efficient code.
• Troubleshoot, debug, and upgrade existing systems.
• Implement automated testing platforms and unit tests.
• Discover, evaluate, and implement new technologies to maximize development efficiency.
• Participate in code reviews to maintain quality and provide feedback.
• Engage in SRE practices and with our DevOps team to manage our AWS deployment environment
• Work within an Agile development framework to deliver high-quality software solutions.

Essential Requirements:

• 5+ years of professional experience in full stack development.
• At least 3 years professional experience of Backend development using TypeScript & JavaScript on NestJS or NodeJS frameworks.
• Experience working with graph databases like Neo4J and query technologies like Graph QL
• Strong understanding of web development principles, including RESTful API design.
• Experience with DevOps platforms like GitLab for code management and CI/CD pipelines.
• Hands-on experience with AWS services.
• Strong knowledge of containerization technologies, such as Docker and Kubernetes.
• Familiarity with microservices architecture and deployment.
• Excellent problem-solving skills and attention to detail.
• Strong communication and teamwork skills. Cultural fit is important to us – you must demonstrate a willingness to collaborate, to take responsibility and to be self-motivated.
• Ability to manage multiple tasks and projects simultaneously.
• Experience with Agile development methodologies.

Desirable:

• Interest and experience in DevSecOps implementation & security best practices
• Experience with implementing observability tools like OpenTelemetry & Grafana
• Experience with additional AWS services such as EKS, RDS, S3, Elasticache , AWS Glue etc.
• Familiarity with infrastructure as code (IaC) tools like Terraform or CloudFormation.
• Experience with IoT technologies and protocols and specifically with MQTT messaging protocol.
• Experience with relevant technologies such as InfluxDB, Python, MySQL, Redis & Vue an advantage

Job Type: Full-Time, Permanent.

Location: Limerick, Ireland (Hybrid/Remote).

Candidate must have the necessary authorisation to work in the Republic of Ireland.

Salary: Competitive based on qualifications, experience, and skills.

Benefits:

• Healthcare
• Pension
• Self-Directed Training Budget of €3,000 per year plus 10 days training leave
• Annual performance-based bonus.
• 25 days annual leave.
• Death-In-Service benefit.
• Dedicated People & Culture club

Working at VIOTAS:

VIOTAS fosters innovation, empowers autonomy, and cultivates an inclusive, flexible work culture. Our diverse, skilled team is dedicated to excellence and passionate about shaping a sustainable, low‑carbon future.

Recognised among Ireland’s Best Workplaces and Best Workplaces in Tech in 2023, VIOTAS prioritises continuous training, professional development, and employee well‑being.

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

Interested in being a part of a team shaping the future of sustainable energy? Apply today and join us in shaping the future of energy technology and sustainable solutions.