Overview

We’re hiring engineers to join IRIS Software Group as we transform how accountants work through AI-powered innovation. Our teams have just shipped our first AI capability, an anomaly detection tool for UK personal tax, processing over 60,000 requests in weeks with exceptional customer feedback. This is the start of our multi-million-pound investment to embed AI across our product portfolio, and we need talented engineers who can build modern full-stack applications using .NET, cloud-native technologies, and AI solutions that impact over 100,000 customers globally.

 

If you’re passionate about cutting-edge technology and want to help us cut tax preparation time by over 60% whilst fundamentally transforming an entire profession, let’s talk about how you can be part of this exciting journey.

 

About the Role

As a Senior Software Engineer, you will be a technical leader within your team, responsible for delivering complex full-stack web applications, serving millions of users, driving technical excellence, and mentoring other engineers. You will work hands-on with cutting-edge UI frameworks, .NET Core backends, and cloud-native technologies while contributing to architectural decisions and ensuring high-quality software delivery across containerised, scalable web products.

 

Main Responsibilities

Technical Delivery

  • Design and deliver complex, scalable systems (multi-service integrations, high-traffic APIs, data processing pipelines) that anticipate edge cases, scalability issues, and long-term maintainability
  • Own large features or entire components across their complete lifecycle from conception to production support
  • Lead technical discussions and influence architecture decisions within team systems and components, with authority over component-level technical choices and escalation path to Engineering Lead for cross-team impacts
  • Drive technical excellence by establishing architectural patterns, standards, and best practices that others can follow
  • Ensure knowledge transfer and documentation for owned systems to enable team continuity

Collaboration & Communication

  • Lead story refinement sessions with Product Owners, providing technical expertise for estimation and risk assessment
  • Partner with cross-functional teams (product, design, QA) to deliver comprehensive solutions that meet business objectives
  • Influence technology choices based on deep technical understanding and business context
  • Steer team Agile ceremony facilitation to drive continuous process improvements, and establish team practices that enhance delivery predictability
  • Proactively identify and inspire resolution of technical debt and system improvements

Quality & Standards

  • Champion comprehensive quality practices including TDD/BDD standards, automated testing strategies, and shift-left testing
  • Lead security implementation across complex features establish team security practices, and conduct comprehensive security reviews
  • Establish development tooling and practices used consistently within the team
  • Lead troubleshooting efforts for complex software issues and production incidents
  • Establish documentation standards for complex team systems and drive knowledge transfer practices across team deliverables

Growth & Development

  • Mentor junior and mid-level engineers actively to raise team capability and technical standards
  • Lead team code review standards establishment conduct complex feature reviews, and drive quality improvements across team deliverables
  • Drive continuous improvement and champion responsible AI adoption with team governance practices

 

 

Qualifications

  • 5-7 years of professional software development experience
  • Proven ability to lead technical projects and deliver complex, multi-system solutions
  • Experience working with highly scalable, internet-facing solutions serving millions of users
  • Demonstrated technical leadership through architecture decisions, technical mentoring, and cross-team collaboration
  • Track record of driving technical excellence, establishing standards, and influencing technology choices
  • Active mentoring experience with junior and mid-level engineers
  • Experience leading technical initiatives that span multiple sprints or quarters

 

 

Required Skills

  • Technical Skills
  • Frontend Development: Strong proficiency with modern UI frameworks (e.g. Angular, React, Vue.js, Blazor) including performance optimisation and component architecture OR working knowledge with focus on backend specialization
  • Backend Development: Strong proficiency .NET Core, C#, ASP.NET Core Web APIs, REST, application architectures, and distributed systems
  • Database Systems and Data Architecture: Strong knowledge of SQL, NoSQL and data architecture decisions.
  • CI/CD Design: Design comprehensive CI/CD architectures for team deliverables, establish deployment strategies, and optimize pipeline performance for team efficiency
  • Infrastructure as Code: Infrastructure as Code with Terraform, ARM Templates or AWS CloudFormation/CDK
  • Observability: Advanced DataDog, Application Insights or Amazon CloudWatch implementation with performance tuning and cost optimisation
  • Cloud Architecture: Strong proficiency Saas using Azure (Functions, Queue, Blob Storage, VMs, etc) or AWS (Lambda, SQS/SNS, EC2, etc.) services, infrastructure design, and performance tuning
  • Container Orchestration: Strong Docker and Kubernetes (AKS/EKS) experience with production-scale deployments
  • Architecture Expertise: Expertise in clean architecture principles, SOLID design patterns, and domain-driven design
  • Scalable Solutions: Experience with highly scalable solutions and internet-facing traffic levels
  • Quality & Testing Leadership: Drive TDD/BDD adoption in team testing strategy and quality governance, and implement comprehensive automated testing with continuous improvement
  • Performance & Scalability Tools: Profiling and benchmarking analysis tools
  • Application Security: Confident vulnerability management, thread modelling and tracking
  • Production Support: Knowledge of observability and production support practices

 

Preferred Skills

  • Experience working with regulated or complex domains (finance, health, govtech) with audit requirements
  • Experience with AI tools to enhance productivity and team development practices
  • Expertise with advanced monitoring and APM strategies using DataDog, including custom dashboards and alerting
  • Expertise with modern UI architecture patterns (micro-frontends, SSR/SSG)
  • Knowledge of security best practices and compliance requirements (OAuth2, OIDC, RBAC)
  • Experience with event-driven architectures and message queuing (Azure Service Bus, RabbitMQ)
  • Exposure to DevOps processes and automation ensuring end-to-end responsibility of features
  • Advanced cloud certifications in Azure or AWS

 

Pay range and compensation package

  • Competitive salary
  • Generous holiday allowance
  • Private medical healthcare
  • Life assurance
  • Pension (location dependent)

 

Culture & Environment:

  • Great Place to Work certified
  • Best Workplaces for Women recognition
  • Technical leadership and innovation focus
  • Flexible working arrangements and excellent work-life balance
  • Opportunity to shape technical direction and mentor others
  • Additional benefits: Cycle to Work, charity days, discount schemes

Salary: Competitive
Location: Romania

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