Service Now Senior Developer

Senior ServiceNow Developer

Role Summary

The Senior ServiceNow Developer is a seasoned, hands-on technical contributor responsible for design realization, implementation, maintenance, and optimization of ServiceNow solutions across the SENSE/cSENSE ecosystem . Working within hybrid teams and Agile Release Trains (ARTs) , this role delivers secure, performant, and scalable implementations based on solution designs defined by Solution Architects .

Beyond delivery, the Senior Developer acts as a quality owner and technical guide —driving clean code practices, reducing technical debt, strengthening engineering standards, and mentoring junior developers and SDA students. The role balances independent ownership of complex stories/features with strong collaboration across architects, product, operations, and integration stakeholders.

Key Responsibilities

Development & Implementation

• Translate approved solution designs into production-ready ServiceNow implementations aligned with platform best practices.
• Develop across ServiceNow capabilities such as:

• ITSM / CSM / FSM (and/or other product lines),
• Custom applications, Flow Designer, IntegrationHub,
• Service Portal and/or UI Builder,
• Scripting and automation: Business Rules, Script Includes, Client Scripts, Scheduled Jobs, UI Policies, and related platform components.

• Implement clean, maintainable JavaScript (TypeScript as a plus), following SOLID principles, code readability standards, and platform performance guidelines.
• Own story-level implementation decisions (within approved designs), including code structure, testing strategy, and deployment readiness.

Integration & Data Flows

• Build and maintain integrations with external systems (e.g., Azure API Management, SnapLogic, SAP, Azure Blob Storage) using established enterprise patterns.
• Implement and support:

• REST/SOAP APIs, authentication patterns, payload contracts,
• Import Sets / Transform Maps, data normalization, reconciliation,
• Scheduled interfaces and event-driven flows where applicable.

• Design robust integration behaviors including logging, retries, error handling, compensating actions, and operational traceability.
• Support incident/problem resolution by analyzing logs, tracing data flows, and identifying root causes in owned applications and integrations.

Quality, Peer Review & Governance

• Conduct and champion high-quality peer reviews with focus on:

• maintainability, reuse, and simplicity,
• platform performance and scalability,
• security (least privilege, safe scripting, secure integrations),
• adherence to engineering standards and guardrails.

• Ensure changes meet definition of done, including documentation, tests, review sign-off, and readiness for higher-tier promotion.
• Proactively identify, communicate, and reduce technical debt, proposing improvements and implementing refactoring when appropriate.
• Adhere to technical governance: ensure implementations receive authorized technical approval (Solution Architect or nominated authority) before promotion.

Operational Stability & Supportability

• Implement solutions with “secure-by-design” and “privacy-by-design” principles; ensure no PROD data is used on sub-production instances.
• Minimize production incidents through quality engineering, monitoring-friendly implementation, and robust error handling.
• Participate in root-cause analysis and implement permanent fixes for recurring issues in owned areas.

Continuous Improvement & ART Ways of Working

• Contribute to evolving development standards, patterns, reusable components, and delivery guardrails across the team/vertical.
• Actively stay current with ServiceNow releases, new features, and roadmap implications; keep certifications active.
• Collaborate in ART ceremonies and Agile delivery practices (planning, refinement, PI execution support), supporting predictable and transparent delivery.

Mentoring of juniors

• Mentor junior developers and SDA (Summer Dev Academy) students through:

• onboarding and guided ramp-up plans,
• pair programming and hands-on coaching,
• structured feedback via code reviews and technical check-ins.

• Raise team capability through:

• knowledge-sharing sessions (brown bags, demos, guilds),
• practical documentation (how-to guides, patterns, do/don’t lists),
• encouraging platform best practices and sustainable engineering habits.

• Support onboarding of new team members (internal/external) on:

• platform conventions and coding standards,
• application context and integration landscape,
• delivery lifecycle and governance expectations.

Required Skills And Qualifications Technical Expertise

• 5+ years of ServiceNow development experience, preferably across at least two product lines (e.g., ITSM, CSM, FSM, HRSD, Discovery) and/or custom app development.
• Strong hands-on expertise in:

• ServiceNow scripting: server-side & client-side JavaScript (TypeScript is a plus),
• Flow Designer, IntegrationHub, and automation patterns,
• ATF (Automated Test Framework) and pragmatic testing approaches,
• UI delivery using Service Portal and/or UI Builder.

• Proven integration engineering experience:

• REST/SOAP, import/export patterns, Transform Maps,
• robust interface design (logging, retries, fault handling),
• familiarity with enterprise integration tooling (e.g., Azure API Management, SnapLogic, SAP) is a strong plus.

• Experience with ServiceNow delivery practices:

• update sets and/or Source Control Integration,
• CI/CD concepts and controlled promotions across instances.

• Strong understanding of:

• performance optimization (queries, script efficiency, platform limitations),
• secure development practices (roles, ACLs, secure APIs),
• clean code principles (SOLID, readability, maintainability).

Certifications (Required)

• ServiceNow Certified System Administrator (CSA)
• ServiceNow Certified Application Developer (CAD)

Nice-to-have Certifications

• CIS (ITSM/CSM/FSM/HRSD/Discovery or similar)
• ITIL 4 Foundation
• SAFe Practitioner (or similar Agile certification)

Mentoring & Communication

• Demonstrated ability to lead by influence: improving outcomes through guidance, review quality, and constructive coaching.
• Strong problem-solving skills; comfortable owning complex deliverables end-to-end with minimal supervision.
• Clear communicator within technical teams and across stakeholders; able to explain technical decisions in accessible terms when needed.
• Highly collaborative and effective in global, multicultural, hybrid teams (internal/external; near/offshore).
• Quality-driven mindset with attention to detail and a strong sense of accountability.
• Fluent English (spoken and written).