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# Senior Software Engineer

- **Company:** Ecoonline
- **Location:** Liverpool, UK
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Acceptance Test-Driven Development, Unit Testing, Microsoft Azure, C Sharp (Programming Language), Software as a Service, Cloud Computing, Code Review, Databases, Continuous Integration, Distributed Systems, Elasticsearch, Performance Tuning, Software Engineering, Software Systems, Web Application Frameworks, Backend, Git, AngularJS, Front End Software Development, Serverless Computing, Docker
- **Published:** October 3, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/senior-software-engineer/50174731

## About the Role

Operations team where required. Apply AI tools to accelerate design, testing, and delivery, exercising judgement to validate and take ownership of the output. What we're looking for: 5+ years' experience in software development, ideally within SaaS, web, mobile web or consumer-focused product environments. Strong hands-on experience with C#.Net, modern JavaScript frameworks such as Angular, and working knowledge of databases and document stores. Experience with cloud technologies such as AWS, Microsoft Azure or similar, as well as containers such as Docker. A clean-coding and test-driven mindset, with strong knowledge of unit and integration testing, performance and security considerations. Experience with Git, continuous integration and deployment, and an interest in serverless approaches and technologies such as Elasticsearch. A degree-level education is preferable but not essential; we are especially interested in practical experience, curiosity and engineering
best practice. Desirable experience includes developing responsive applications and working with Elasticsearch. 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-opportunityemployer. 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 #J-18808-Ljbffr

## Description

customers to input, analyse and act on their EHS data quickly, helping them make intelligent and informed decisions. You will play a key role in helping EcoOnline protect people and the planet by building high-quality, scalable software used by businesses across a wide range of industries. Key Responsibilities: Design, develop, and maintain software solutions across frontend, backend, and database layers. Work with distributed systems and APIs, ensuring seamless integration between products. Contribute to the design and development of shared services (e.g., authentication, hierarchy management). Participate in code reviews, technical discussions, and mentoring to support team growth. Work closely with Product Managers and other stakeholders to understand problems and deliver high-impact solutions. Ensure adherence to best practices in scalability, security, and performance optimisation. Support and troubleshoot production systems as needed, collaborating with the Cloud