Senior Mulesoft Developer

Billennium; Polska; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Udemy for Business

Private medical care

Multisport card

Language lessons

Shopping vouchers

Team-building events

Welcome pack

Job summary

Billennium, a global technology company, is seeking a Senior Mulesoft Developer to work on a client in the pharmaceutical sector. You will build and maintain APIs and integrations across systems, using Mulesoft to deliver scalable data flows.

You will design solutions, monitor performance, and collaborate with architects and business analysts to translate requirements into technical specs. Fluent English and experience with cloud services are required; GxP experience is a plus.

Qualifications

• Proven experience with Mulesoft Anypoint Platform and API development.
• Strong understanding of RESTful APIs, RAML, and JSON/XML.
• Experience with integration patterns, message queues, and cloud services.
• Ability to debug, troubleshoot, and optimize API performance.
• Familiarity with CI/CD pipelines and version control (GitLab).
• Excellent written and spoken English.

Responsibilities

• Build and maintain APIs and data flows between systems.
• Design, develop and integrate Mulesoft solutions.
• Ensure high-performance, scalable applications.
• Create and maintain technical documentation.
• Collaborate with architects and analysts to translate requirements into specs.
• Monitor and troubleshoot MuleSoft integrations.

Skills

Mulesoft

API development

REST RAML JSON

CI/CD GitLab

English

Tools

GitLab

Job description

Billennium is a global technology company with over 20 years of experience, committed to innovation and empowering businesses. As an employer, we offer a supportive, growth-focused environment where collaboration and creativity thrive. Join us to shape the future of technology together!

About the Role

For our client, a global pharmaceutical company, we are currently looking for a Senior Mulesoft Developer.

What we are looking for

• Proven experience with Mulesoft Anypoint Platform and API development.
• Strong understanding of RESTful APIs, RAML, and JSON/XML.
• Experience with integration patterns, message queues, and cloud services.
• Ability to debug, troubleshoot, and optimize API performance.
• Familiarity with CI/CD pipelines and version control (GitLab).
• Excellent written and spoken English

Nice to Have

• Experience in a GxP-regulated environment.
• Experience with CodeBeamer.
• Familiarity with event-based APIs and micro-services architecture.
• Knowledge of performance testing tools and methodologies.
• Understanding of agile methodologies and development practices.

What you will do

• Building and maintaining APIs, integrations, and data flows between systems and applications
• Development, designing and integrating solutions using Mulesoft
• Ensuring high performance and scalable applications
• Creating and maintaining technical documentation
• Cooperating with team (architects, business analysts) to gather requirements and transfer them into technical specifications
• Monitoring and troubleshooting MuleSoft integrations

Our offer

• Comprehensive benefits - enjoy Udemy for Business, private medical care, Multisport card, veterinary package, language lessons, and shopping vouchers.
• Flexibility - adaptable working hours and remote/hybrid work options to suit your lifestyle &location.
• Career growth - access opportunities for professional development and learning, including perks related to our official partnerships with global IT giants: Microsoft, AWS, Snowflake, Salesforce & amp; more.
• Global collaboration - work with a diverse, international team.
• Innovative environment - be part of a forward-thinking and growth-oriented workplace.
• Engaging community - Work with passionate professionals and participate in team-building events, hackathons, and CSR initiatives to make an impact beyond work.
• Team-building events including our company tradition (annual company event in Mazury).
• A pleasant surprise to start your journey with us in the form of a welcome pack.

Recruitment process

• HR call
• Technical interview
• Client Interview
• Decision/ Feedback