Senior Software Engineer - 6 month contract

Want to be a part of a company that’s making a difference? We’re a growing global tech company, with huge potential for curious and caring minds, committed to each other, to deliver solutions that protect people and the planet for future generations. Our team of experts are focused on creating meaningful impact and making a real difference for our customers. 🌍 Impact: A strong connection to our mission through product, customer and impact is essential. We protect people and the planet by helping businesses mitigate risks and create safer, healthier workplaces. 💡 Innovation: Trusted by over 11,000 customers, you’ll have the chance to work with industry experts and thought leaders, dedicated to driving positive change. We believe in fostering a trusting environment that empowers our team to grow, innovate, and succeed. 📈 Growth: Connect commercial growth to personal growth opportunities. Benefit from a wide range of learning opportunities for ambitious professionals seeking development in a rapidly expanding sector. We're on a mission to protect people and the planet by building and deploying transformative software. We need everyone's energy and commitment, regardless of region or rank, to make that mission a reality for millions more customers. Our culture code , a set of principles that underpins our values, is our commitment to each other and working better together. Join EcoOnline and be part of a mission dedicated to driving positive change. Read on to learn more about the opportunity and how you can have a positive impact! About the Role We’re looking for a Senior Software Engineer to join our Research & Development team on a full-time 6 month contract basis, based from Liverpool with a hybrid working arrangement. You’ll be part of an experienced engineering team working across .NET, SQL Server and AWS to help evolve our Health & Safety platform. This is an opportunity to contribute to key strategic initiatives, including integrating one of our Health & Safety products with shared platform services such as authentication and identity capabilities, as well as MCP servers that enable AI-powered functionality. You’ll help address performance and scalability challenges, contribute to architectural improvements, and support the evolution of our platform towards a more modern, efficient and AI-enabled future. Key Responsibilities: Design, develop and maintain high-quality software solutions across frontend, backend and database layers. Work with distributed systems and APIs to ensure seamless integration between products and shared platform services. Contribute to the design and development of shared services, including authentication, identity and hierarchy management capabilities. Drive improvements in scalability, security and performance optimisation, including the responsible use of AI in software development and product innovation. Collaborate closely with Product Managers, QA, Platform, Cloud Operations and other stakeholders to understand problems and deliver high-impact solutions. Participate in code reviews, technical discussions and mentoring to support team growth, knowledge sharing and continuous improvement. What we're looking for: Strong experience in C# .NET Core or Framework, SQL Server and AWS. Solid understanding of API design, performance optimisation, data modelling and cloud-based architectures. Proficiency in unit testing, CI/CD and modern DevOps practices, with familiarity in scalability patterns and caching strategies. Experience integrating AI-driven features or using AI tools to improve development practices would be highly beneficial. 5+ years’ software engineering experience, ideally in a full-stack role, with the ability to navigate complex technical challenges. A collaborative approach, excellent communication skills and confidence working with cross-functional engineering and product teams. A passion for building scalable, maintainable and well-architected solutions, with a proactive approach to learning and improvement. Our Benefits: We offer a variety of global benefits which are listed below! Please note a country-specific breakdown will be provided during your interview process. 🌴 Generous Paid Time Off 🍼 Extended Parental Leave ❤️🩹 Robust Health Coverage 💡 Accelerated Learning Paths 🧘♂️Team Wellness Initiatives 📆 Company-wide Events 🌎 Employee Resource Groups ⭐️ Recognition awards EcoOnline is proud to be an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment where everyone feels safe and empowered to be themselves. Our Talent Acquisition team reviews all applications and believes in the potential of individuals who may not meet all the specific requirements but demonstrate the attitude, alignment with our values and drive to succeed. We are committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures. If you need any assistance due to a disability, please speak to your talent acquisition partner. At EcoOnline, we may use AI-assisted note-taking technology during interviews to help capture key discussion points accurately and allow interviewers to focus on the conversation. AI is used only as an administrative support tool. All candidate assessments and hiring decisions are made by trained recruiters and hiring managers. We are committed to handling personal information responsibly and in line with applicable privacy regulations. #LI-Hybrid