Senior Software Engineer

ServiceNow; Staines-upon-Thames; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A leading technology firm in Staines-upon-Thames is seeking a skilled senior ServiceNow developer to join their team. Responsibilities include designing, developing, and implementing solutions within the ServiceNow platform, as well as troubleshooting and providing support. Ideal candidates will have a strong software engineering background with at least three years’ experience in relevant technologies and databases, alongside thorough ITIL and ITSM knowledge. Flexible working arrangements are available.

Qualifications

• 3+ years hands-on experience with JavaScript, Python, or similar.
• 2+ years experience with ServiceNow instances handling production support.
• Proficiency in ITIL and ITSM disciplines.

Responsibilities

• Collaborate with teams to troubleshoot issues and implement solutions.
• Develop scoped applications utilizing the ServiceNow platform functionality.
• Maintain API and data integrations between ServiceNow and other services.

Skills

JavaScript

Python

Relational databases (MySQL, MariaDB, PostgreSQL)

API management

Troubleshooting complex systems

Tools

IDEs

Unix-based systems

Job description

We are seeking a skilled and experienced senior ServiceNow developer with a strong background in software engineering to join our dynamic team. The ideal candidate will be responsible for designing, developing, and implementing solutions within the ServiceNow platform, as well as troubleshooting and providing escalation support for the automations and applications produced by this team.

Responsibilities

• Collaborate with cross‑functional teams to troubleshoot issues, perform root cause analysis and implement solutions.
• Develop scoped applications that will utilize all of the ServiceNow platform functionality.
• Develop and support the integration of 3rd‑party systems with ServiceNow; MID server, web services (REST), and SSH actions.
• Create and maintain API and data integrations between ServiceNow and other services.
• Develop comprehensive test strategies covering functional, regression, integration and performance aspects.
• Foster a culture of continuous learning and improvement by sharing best practices in engineering and quality.
• Promote a culture of engineering craftsmanship, knowledge‑sharing, and thoughtful quality practices across the team.

Qualifications

• Experience in leveraging or critically thinking about how to integrate AI into work processes, decision‑making, or problem‑solving. This may include using AI‑powered tools, automating workflows, analyzing AI‑driven insights, or exploring AI’s potential impact on the function or industry.
• At least 3 years of hands‑on experience with JavaScript, Python, Go, or similar, plus a willingness and ability to learn both JavaScript and ServiceNow’s on‑platform implementation of it.
• At least 3 years of hands‑on experience with relational databases (MySQL, MariaDB, and/or PostgreSQL preferred, others are acceptable).
• A rich knowledge of both ITIL and ITSM disciplines is required.
• Demonstrated proficiency with the use and management of APIs.
• Some knowledge of infrastructure services spanning servers (Linux), storage, network, security and cloud. This is not a systems administration position, but some familiarity with these concepts is essential.
• At least 2 years of hands‑on experience with the development, configuration, implementation and support of production and non‑production ServiceNow instances.
• Understanding software quality principles including reliability, observability, and production readiness.
• Ability to troubleshoot complex systems and optimize performance across the stack.
• Comfort with development tools such as IDEs, debuggers, profilers, source control, and Unix‑based systems.
• Bonus point: ServiceNow Application Developer and System Administrator Certifications.

Company Overview

ServiceNow stands as a global market leader, bringing innovative AI‑enhanced technology to over 8,100 customers, including 85% of the Fortune 500®. Our intelligent cloud‑based platform seamlessly connects people, systems, and processes to empower organizations to find smarter, faster, and better ways to work. We approach our distributed world of work with flexibility and trust. Work personas (flexible, remote, or required in office) are categories that are assigned to ServiceNow employees depending on the nature of their work and their assigned work location. Learn more here.

Company History

It all started in sunny San Diego, California in 2004 when a visionary engineer, Fred Luddy, saw the potential to transform how we work. Fast forward to today – ServiceNow remains a leading platform, continually evolving to meet the challenges of modern enterprises.