Principal Integration Engineer

Key Responsibilities • Act as the principal technical authority for integration engineering across Maximus UK, providing deep leadership across Boomi-based integration solutions. • Define and maintain integration engineering standards, patterns, guardrails, and best practices for system-to-system integrations, APIs, events, and workflows. • Provide hands-on technical leadership for the design and implementation of complex integrations built on Boomi and related integration technologies. • Design scalable integration architectures connecting cloud services, SaaS platforms, enterprise applications and data platforms. • Drive adoption of modern integration patterns, including API-first design, event-driven architectures, microservices-aligned integrations, and reusable integration components. • Guide the team's technical direction, improve engineering quality, and support consistent delivery standards. • Lead technical discovery sessions, design workshops, and integration architecture discussions with business stakeholders, architects, product teams, and engineering colleagues. • Translate business and operational requirements into robust integration designs and implementation plans that balance speed, resilience, supportability, and long-term value. • Establish governance approaches for integration code quality, peer review, CI/CD, testing, deployment, observability, and operational readiness. • Ensure integrations are secure by design, with appropriate controls for authentication, authorisation, encryption, auditability, and protection of sensitive data including PII and PHI. • Drive the development of reusable integration components, frameworks, and reference implementations that improve delivery speed, quality, and consistency across projects. • Mentor and develop integration engineers, raising technical capability, architectural understanding, and engineering discipline across the integration team. • Evaluate opportunities to simplify the integration and automation estate, reduce platform dependency, and introduce more cost-effective and flexible integration approaches. • Collaborate with automation specialists (e.g. Automation Anywhere engineers) to define clear boundaries between integration and automation layers and ensure coherent end-to-end designs. • Monitor technology trends, platform capabilities, and industry best practice in integration engineering, using insight and evidence to evolve the organisation's integration roadmap Essential Skills - What You'll Bring • Significant experience in integration engineering. • Strong hands-on expertise with the Boomi Integration Platform, including process design, orchestration, integration development, API exposure, and enterprise deployment patterns. • Proven experience designing scalable enterprise integration architectures across cloud services, SaaS platforms, enterprise applications and APIs. • Experience delivering complex multi-system integrations that are secure, resilient, observable, and supportable in live operational environments. • Strong understanding of API-led integration, service orchestration, event-driven patterns, and modern approaches to enterprise integration. • Practical experience with REST and SOAP APIs, message-based integrations, and event or streaming technologies. • Experience integrating enterprise platforms such as Salesforce, ServiceNow, Workday, SAP, ERP, CRM, or case management solutions. • Strong understanding of data transformation, mapping, validation, and the controls required to maintain data integrity and reliability across integrated systems. • Strong understanding of secure integration practices, including authentication, authorisation, encryption, API security, and the protection of sensitive data such as PII and PHI. • Experience defining integration engineering standards, governance approaches, code review practices, and CI/CD patterns for integration deliveries. • Ability to lead integration architecture reviews, technical workshops, and design sessions, and to communicate complex technical concepts clearly to diverse audiences. • Experience mentoring and guiding integration engineers, helping them improve design quality, coding practices, and architectural awareness. • Ability to assess new integration technologies and platform capabilities pragmatically, balancing innovation, cost, maintainability, and delivery risk. • Strong problem-solving and decision-making skills, with the ability to navigate technical complexity, manage trade-offs, and provide clarity in ambiguous situations. Desirable Skills - What Makes You Stand Out • Boomi Professional, Boomi Architect, or equivalent integration platform certifications. • Experience working on public sector, health, or other regulated digital transformation programmes with strong security and compliance requirements. • Familiarity with UK Government digital and security expectations, or similarly governed delivery environments. • Exposure to automation technologies (e.g. Automation Anywhere) and AI-enabled orchestration, and an understanding of how they complement core integration patterns EEO Statement • MAXIMUS is committed to developing, maintaining and supporting a culture of diversity, equity and inclusion throughout the recruitment process. We know that feeling included has a dramatic impact on personal wellbeing and are working to ensure that no job applicant receives less favourable treatment due to any personal characteristic. Advertisements for posts will include sufficiently clear and accurate information to enable potential applicants to assess their own suitability for the post. • We are a Disability Confident Leader, thanks to our commitment to the recruitment, retention and career development of people with disabilities and long-term conditions. The Disability Confident scheme includes a guaranteed interview for any applicant with a disability who meets the minimum requirements for a job. When you complete your job application you will find a question asking you if you would like to apply under the Disability Confident Guaranteed Interview Scheme. If you feel that you have a disability and apply under this scheme, providing that you meet the essential criteria for the job, you will then be invited for interview. Your Guaranteed Interview application will only be shared with the hiring manager and the local resourcing team. • Where reasonable, MAXIMUS will review and consider adjustments for those applicants who express a requirement for them during the recruitment process. Minimum Salary £ 75,000.00 Maximum Salary £ 98,875.00 *