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Senior MuleSoft Integration Developer – Managed Services
  • Warszawa
Senior MuleSoft Integration Developer – Managed Services
Warszawa, Warszawa, mazowieckie, Polska
Square One Resources Sp. z o.o.
31. 1. 2026
Informacje o stanowisku

Join our Managed Services team as a Senior MuleSoft Integration Developer, supporting enterprise-grade integrations and API solutions. You will work closely with Service Delivery Managers, Architects, and clients to maintain, enhance, and optimize MuleSoft-based integration landscapes. This role focuses on ensuring high availability, performance, and scalability of integrations across cloud, hybrid, and on-premises environments while adhering to ITIL processes and managed service standards.

Senior MuleSoft Integration Developer – Managed Services



Your responsibilities

  • Drive technical support, maintenance, and enhancement of MuleSoft integrations and APIs in collaboration with the Service Delivery Manager, ensuring alignment with business objectives.
  • Support platform upgrades (Mule runtime, Anypoint Platform) including impact analysis, development/configuration, testing, and deployment.
  • Create and maintain technical documentation, runbooks, and operational procedures.
  • Mentor junior developers and promote a culture of learning, quality, and technical excellence.
  • Identify and lead initiatives to improve performance, reliability, cost-efficiency, and developer productivity across the integration landscape.
  • Collaborate with clients, architects, and stakeholders to translate business requirements into scalable API-led MuleSoft solutions; provide estimates and design guidance.
  • Troubleshoot complex incidents, conduct root cause analysis, and implement preventive measures to enhance system stability.
  • Improve observability of integrations through logging, metrics, tracing, dashboards, and alerts.

Our requirements

  • Proven experience integrating Salesforce with MuleSoft and understanding Salesforce-MuleSoft integration patterns.
  • MuleSoft certifications: MCD Level 1, Integration Architect, Platform Architect, API Design Associate.
  • Expertise in Mule 4 and Anypoint Platform, with strong DataWeave skills.
  • Deep understanding of API-led connectivity and integration patterns.
  • Experience with REST/SOAP, RAML/OpenAPI, messaging (JMS/Kafka), and connectors/protocols.
  • Strong knowledge of security best practices: OAuth 2.0, JWT, mTLS/TLS, client credential management, and API gateway policies.
  • Hands-on experience with deployment topologies: CloudHub, Runtime Fabric, hybrid/on-prem; familiarity with VPCs, VPNs, Private Spaces, and environment promotion strategies.
  • Proficiency in monitoring and debugging tools, performance tuning, and resiliency patterns.
  • Proven track record in managed services or IT support projects in an international environment.
  • Leadership skills with a collaborative and team-oriented mindset.
  • Experience managing a small project team, including task assignment, progress supervision, and end-to-end solution quality ownership.
  • Willingness to learn and adopt new technologies and integration solutions.

 

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