Senior Backend Developer

Version 1 has celebrated 30 years in business and continues to be trusted by global brands to deliver technology and transformation solutions that drive customer success. Our deep expertise enables our customers to navigate the rapidly evolving technology landscape. We foster strong partnerships with global technology leaders including Microsoft, AWS, Oracle, Red Hat, OutSystems, Snowflake, ensuring that our customers are provided with the highest quality solutions and services.

We’re an award-winning employer reflecting how our employees are at the very heart of what we do:

• UK & Ireland's premier AWS, Microsoft & Oracle partner
• 3300+ strong, €350/£300m revenue business
• 10+ years as a Great Place to Work in Ireland & UK
• Best Workplace for Women in the UK & Ireland by GPTW
• Best Workplace for Wellbeing in the UK by GPTW

We’re a core values driven company, we hire people who share our values, and we reward those who display and foster them, it’s deeply embedded within our DNA. Invest in us and we’ll invest in you!.

About the Role

We are seeking an experienced Senior Backend Developer with strong expertise in AWS Serverless technologies, TypeScript/Node.js, Python, GraphQL, and cloud-native application development. The ideal candidate will be responsible for designing, developing, and maintaining scalable backend services while ensuring security, reliability, and performance across distributed cloud environments.

This role requires hands-on experience with modern AWS services, identity federation, API development, and infrastructure-as-code practices.

Key Responsibilities

• 7+ years of experience into Design, develop, and maintain scalable backend applications using TypeScript and Node.js.
• Build and manage serverless solutions leveraging AWS Lambda, Step Functions, AppSync, and DynamoDB.
• Develop secure and performant GraphQL APIs using AWS AppSync.
• Implement authentication and authorization solutions using AWS Cognito and SAML 2.0 Federation.
• Create and manage cloud infrastructure using AWS CDK (Cloud Development Kit).
• Automate CI/CD pipelines and deployment processes using AWS CodeCatalyst and DevOps best practices.
• Implement security controls utilizing IAM, WAF, KMS, and other AWS security services.
• Configure monitoring, logging, and alerting using Amazon CloudWatch.
• Develop event-driven and workflow-based architectures using AWS services.
• Collaborate with frontend teams working with React-based applications to define API contracts and data models.
• Participate in architecture reviews, code reviews, performance tuning, and production support activities.
• Mentor junior developers and contribute to engineering best practices and standards.

Technical Skills

AWS Services

• Amazon Cognito
• AWS Lambda
• AWS Step Functions
• AWS AppSync
• Amazon DynamoDB
• AWS CDK
• AWS CodeCatalyst
• AWS IAM
• AWS WAF
• Amazon CloudWatch
• AWS KMS
• Amazon SES

Development

• TypeScript
• Node.js
• REST APIs
• Python
• GraphQL
• Event-Driven Architecture
• Serverless Architecture
• Microservices Development

Security & Identity

• SAML 2.0 Federation
• OAuth 2.0 / OpenID Connect
• Authentication & Authorization Design
• Secure API Development

Frontend Collaboration

• Understanding of React-based applications
• Experience integrating backend services with modern web applications

DevOps & Quality

• CI/CD Pipelines
• Infrastructure as Code (IaC)
• Git-Based Development
• Automated Testing
• Monitoring & Observability

Preferred Qualifications

• Experience with large-scale cloud-native applications.
• Strong understanding of distributed systems and scalable architectures.
• Experience with Agile/Scrum delivery methodologies.

Key Competencies

• Strong problem-solving and analytical skills.
• Excellent communication and stakeholder management abilities.
• Ability to work independently in a fast-paced environment.
• Ownership mindset with a focus on quality and continuous improvement.
• Mentoring and technical leadership experience.

Nice to Have

• Experience with React development.
• Experience with multi-tenant SaaS platforms.
• Knowledge of container technologies (Docker/Kubernetes).
• Exposure to financial services, healthcare, or regulated industry environments.
• Experience implementing enterprise SSO solutions.

Expected Outcomes

• Deliver highly scalable and secure cloud-native backend services.
• Improve platform reliability, observability, and automation.
• Enable seamless integration of identity and access management solutions.
• Contribute to architectural decisions and engineering excellence across the organization.

Why Version 1?

At Version 1, we believe in providing our employees with a comprehensive benefits package that prioritises their wellbeing, professional growth, and financial stability.

• Share in our success with our Quarterly Performance-Related Profit Share Scheme, where employees collectively benefit from a share of our company's profits
• Strong Career Progression & mentorship coaching through our Strength in Balance & Leadership schemes with a dedicated quarterly Pathways Career Development programme
• Flexible/remote working, Version 1 is tremendously understanding of life events and people’s individual circumstances and offer flexibility to help achieve a healthy work life balance
• Financial Wellbeing initiatives including; Pension, Private Healthcare Cover, Life Assurance, Financial advice and an Employee Discount scheme
• Employee Wellbeing schemes including Gym Discounts, Bike to Work, Fitness classes, Mindfulness Workshops, Employee Assistance Programme and much more. Generous holiday allowance, enhanced maternity/paternity leave, marriage/civil partnership leave and special leave policies
• Educational assistance, incentivised certifications, and accreditations, including AWS, Microsoft, Oracle, and Red Hat
• Reward schemes including Version 1’s Annual Excellence Awards & ‘Call-Out’ platform.
• Environment, Social and Community First initiatives allow you to get involved in local fundraising and development opportunities as part of fostering our diversity, inclusion and belonging schemes.

And many more exciting benefits… drop us a note to find out more.

Version 1 is an equal opportunities employer.

We are committed to building a diverse, inclusive and respectful workplace where everyone feels valued and able to thrive. We welcome applications from people of all backgrounds, identities and lived experiences, and we value the different perspectives people bring including those shaped by disability and neurodiversity.

We want every candidate to have a positive and accessible recruitment experience. If you need reasonable adjustments at any stage of the process, please contact your recruiter at Version 1. We will consider all requests carefully, respectfully and confidentially.

Video links: https://www.youtube.com/watch?v=F_d3ELTH5zo