Application Integration Engineer
BH-343532
Posted: 05/08/2026
- Good
- England North West Knutsford
- Permanent
-
IT
Application Integration Engineer – Permanent – Knutsford
Hybrid – 3 days on site, 2 days remote
My client is looking for someone who enjoys working across application configuration, system integration, & complex environments. My client builds cloud-based communications platform that integrates with enterprise systems & powers real-time communication workflows across distributed microservices. Cloud-native microservice architecture. Enterprise voice & communications systems. Third-party application integrations. Multi-tenant SaaS environments. Customer-like integration & validation setups. This is a hands-on technical engineering role focused on making sure my client’s application ecosystem works as a complete integrated solution. Responsible for the configuration, integration, & reliability of microservices & platform services, third-party integrations, selected enterprise voice/communication systems, Product teams (end-to-end feature validation).
Application Integration Engineer required: - Experience with enterprise communication or complex application environments. Exposure to systems such as: Cisco CUCM, Microsoft Teams Voice, Webex Calling, Avaya, Genesys, or similar. Strong understanding of application configuration concepts (users, routing, policies, tenants, etc.). Comfortable working with distributed systems (logs, APIs, configuration tools). Strong analytical & troubleshooting mindset. Nice to Have: - Exposure to SIP-based systems (conceptual understanding is sufficient). Experience with SaaS, microservices, or cloud-native applications. Understanding of authentication systems (OIDC, SAML, OAuth). Basic scripting or automation (Bash, Python, etc.)
Application Integration Engineer will be working on: -
Configure client’s application services across a microservice-based architecture. Manage application-level configuration (tenants, users, roles, routing, feature flags, etc.). Integrate & configure third-party applications & services. Maintain realistic multi-tenant environments that reflect customer deployments. Ensure end-to-end application behaviour is consistent across environments. System Integration (Including Voice Platforms). Support integration with enterprise communication systems such as, Cisco CUCM. Microsoft Teams Voice. Cisco Webex Calling. Other UC or contact center platforms where relevant. Understand key configuration concepts (routing, users, policies, dial plans, integration points). Ensure correct end-to-end behaviour between my client’s platforms & external systems
Application Integration Engineer Integration Lab Ownership: - Own & maintain my client’s integration & QA lab environment. Ensure environments are stable, usable, & representative of real customer setups. Support QA teams in reproducing & investigating complex issues. Work with Engineering to validate new features in integrated environments. Work closely with developers to understand microservice interactions & dependencies. Debug configuration & integration issues across multiple systems. Document setup procedures, configurations, & integration patterns. Help improve internal tooling & environment automation
With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.
Hybrid – 3 days on site, 2 days remote
My client is looking for someone who enjoys working across application configuration, system integration, & complex environments. My client builds cloud-based communications platform that integrates with enterprise systems & powers real-time communication workflows across distributed microservices. Cloud-native microservice architecture. Enterprise voice & communications systems. Third-party application integrations. Multi-tenant SaaS environments. Customer-like integration & validation setups. This is a hands-on technical engineering role focused on making sure my client’s application ecosystem works as a complete integrated solution. Responsible for the configuration, integration, & reliability of microservices & platform services, third-party integrations, selected enterprise voice/communication systems, Product teams (end-to-end feature validation).
Application Integration Engineer required: - Experience with enterprise communication or complex application environments. Exposure to systems such as: Cisco CUCM, Microsoft Teams Voice, Webex Calling, Avaya, Genesys, or similar. Strong understanding of application configuration concepts (users, routing, policies, tenants, etc.). Comfortable working with distributed systems (logs, APIs, configuration tools). Strong analytical & troubleshooting mindset. Nice to Have: - Exposure to SIP-based systems (conceptual understanding is sufficient). Experience with SaaS, microservices, or cloud-native applications. Understanding of authentication systems (OIDC, SAML, OAuth). Basic scripting or automation (Bash, Python, etc.)
Application Integration Engineer will be working on: -
Configure client’s application services across a microservice-based architecture. Manage application-level configuration (tenants, users, roles, routing, feature flags, etc.). Integrate & configure third-party applications & services. Maintain realistic multi-tenant environments that reflect customer deployments. Ensure end-to-end application behaviour is consistent across environments. System Integration (Including Voice Platforms). Support integration with enterprise communication systems such as, Cisco CUCM. Microsoft Teams Voice. Cisco Webex Calling. Other UC or contact center platforms where relevant. Understand key configuration concepts (routing, users, policies, dial plans, integration points). Ensure correct end-to-end behaviour between my client’s platforms & external systems
Application Integration Engineer Integration Lab Ownership: - Own & maintain my client’s integration & QA lab environment. Ensure environments are stable, usable, & representative of real customer setups. Support QA teams in reproducing & investigating complex issues. Work with Engineering to validate new features in integrated environments. Work closely with developers to understand microservice interactions & dependencies. Debug configuration & integration issues across multiple systems. Document setup procedures, configurations, & integration patterns. Help improve internal tooling & environment automation
With over 90 years' combined experience, NES Fircroft (NES) is proud to be the world's leading engineering staffing provider spanning the Oil & Gas, Power & Renewables, Chemicals, Construction & Infrastructure, Life Sciences, Mining and Manufacturing sectors worldwide. With more than 80 offices in 45 countries, we are able to provide our clients with the engineering and technical expertise they need, wherever and whenever it is needed. We offer contractors far more than a traditional recruitment service, supporting with everything from securing visas and work permits, to providing market-leading benefits packages and accommodation, ensuring they are safely and compliantly able to support our clients.