Senior Network Engineer

Career Category Information Systems Job Description Join our team at AMGEN Capability Center Portugal , consistently recognized among the top companies in the Best Workplaces™ ranking by Great Place to Work® in Portugal. In 2026, we were once again distinguished as one of the top Best Workplaces in the country (category 201–500 employees), reinforcing our commitment to an exceptional employee experience and workplace culture. We are a team of over 500 talented individuals, spanning more than 30 functions and areas of expertise, and representing over 40 nationalities. Together, we bring diverse perspectives and professional backgrounds to help shape the future of healthcare through innovation and technology. This is your opportunity to explore a world of possibilities across areas such as Data & Analytics, Digital, Technology & Innovation, Cybersecurity, R&D Operations, Global Distribution, Finance, Regulatory Affairs, General & Administrative, Human Resources, and many more. Located in the heart of Lisbon, our AMGEN office fosters a culture of innovation, excellence, and purpose. Come thrive with us at AMGEN, supporting our mission To Serve Patients. What we do at AMGEN matters in people’s lives. Senior AWS Cloud Network Engineer At AMGEN, Technology isn’t just a support function—it’s a catalyst for discovery, transformation, and real-world impact. Here, your ideas fuel innovation that improves and saves lives of patients in dire need of our medicines. Are you ready to do meaningful work that matters? LIVE WHAT YOU WILL DO We are seeking a highly experienced Senior AWS Cloud Network Engineer to join the Cloud Networking team and help design, implement, operate, and continuously improve a large-scale enterprise AWS network environment. This role will be responsible for delivering secure, resilient, scalable, and highly available cloud-networking capabilities across a multi-account, multi-region AWS environment. The engineer will work across AWS networking, enterprise network integration, cloud security, DNS, routing, connectivity, and application enablement. The successful candidate will bring strong hands-on experience with AWS networking and a solid foundation in enterprise networking technologies. This person must be comfortable troubleshooting complex end-to-end connectivity issues involving AWS, on-premises infrastructure, routing protocols, firewalls, DNS, and application dependencies. The position will work closely with Cloud Platform, Enterprise Network, Cybersecurity/Network Security, Infrastructure, application engineering, and other technology teams. Roles & Responsibilities: Cloud Network Architecture & Engineering Design, implement, and support AWS network architectures using Amazon VPC, shared VPC architectures, Transit Gateway, subnetting, route tables, VPC peering, PrivateLink, VPC endpoints, AWS Route53 and related AWS networking services . Implement secure and scalable multi-account and multi-region networking patterns. Develop and maintain cloud network standards, reusable architectures, and engineering patterns. Support network segmentation and controlled traffic flows across application, platform, shared-service, and security domains. Participate in architecture reviews and provide cloud-networking guidance for new applications and platform migrations. Hybrid Connectivity Design, implement, and troubleshoot connectivity between AWS and enterprise/on-premises environments. Work with AWS Direct Connect, Site-to-Site VPN, BGP, route propagation, routing domains, and hybrid connectivity patterns . Troubleshoot complex traffic paths across AWS, Direct Connect, enterprise routing, firewalls, and security controls. Partner with Enterprise Network teams on cloud/on-premises routing boundaries and connectivity changes. DNS & Network Services Implement and support Amazon Route 53, Route 53 Resolver, private hosted zones, inbound/outbound DNS resolution, and hybrid DNS architectures . Troubleshoot DNS resolution issues across AWS and enterprise environments. Support cloud network services such as VPC endpoints, PrivateLink, load balancing, and private API connectivity. Security Integration Implement cloud-networking solutions aligned with enterprise security requirements. Work with firewall and security teams to design and troubleshoot inspected traffic flows. Support network segmentation, security groups, NACLs, endpoint controls, and secure connectivity patterns. Ensure network designs follow enterprise security and least-privilege principles. Operations & Incident Management Provide senior-level troubleshooting for production incidents, service requests, and network onboarding activities. Participate in major incident response, root-cause analysis, problem management, and preventive engineering. Analyze routing, DNS, firewall, security group, endpoint, TCP/IP, and connectivity behavior to isolate network versus application/service issues. Support operational readiness, change management, documentation, and network lifecycle activities. Resilience, Capacity & Continuous Improvement Identify single points of failure and improve network resiliency and operational continuity. Contribute to capacity planning, growth forecasting, lifecycle management, and disaster-recovery/network recovery strategies. Help reduce key-person dependency through documentation, knowledge sharing, standardization, and team development. Continuously improve network reliability, observability, operational processes, and engineering practices. WIN WHAT WE EXPECT OF YOU Basic Qualifications and Experience: Bachelor’s degree in computer science, Information Technology, Engineering, or a related technical discipline and 5+ years of relevant experience , or equivalent combination of education and experience. Must-Have Skills: Strong hands-on experience designing and operating AWS networking infrastructure in enterprise environments . Significant experience with: AWS VPC Transit Gateway Route tables and routing Direct Connect and/or Site-to-Site VPN Route 53 and DNS VPC endpoints / PrivateLink Security Groups and Network ACLs Strong understanding of IPv4, TCP/IP, subnetting, CIDR, routing, DNS, and network troubleshooting . Experience with infrastructure automation using CloudFormation, Terraform, Python, Bash, or AWS CLI . Practical experience with enterprise routing technologies such as BGP and/or OSPF . Demonstrated experience troubleshooting complex hybrid-cloud connectivity issues. Experience working in environments with multiple teams, accounts, platforms, and organizational dependencies. Ability to participate in production support and critical incident response when required. Good-to-Have Skills: AWS networking certification such as AWS Certified Advanced Networking – Specialty . Experience with AWS Organizations and large-scale multi-account environments. Experience with multi-region AWS networking. Experience integrating AWS networking with enterprise firewalls such as Fortinet, Palo Alto, or equivalent . Experience with cloud security architecture and network segmentation. Experience with centralized DNS and hybrid DNS architectures. Experience with infrastructure automation using CloudFormation, Terraform, Python, Bash, or AWS CLI . Experience with observability and network diagnostics including VPC Flow Logs, CloudWatch, packet captures, and network telemetry . Experience supporting regulated or highly controlled enterprise environments. Strong written and verbal communication skills with the ability to explain complex technical issues to both engineers and leadership. Soft Skills: Strong ownership and accountability. Able to work independently on technically complex problems. Calm and analytical during production incidents. Strong collaboration across Cloud, Network, Security, Infrastructure, and Application teams. Willingness to document and transfer knowledge rather than becoming a single point of dependency. Strong engineering judgment and risk awareness. Ability to balance operational support with long-term architectural improvement. THRIVE WHAT YOU CAN EXPECT OF US Vast opportunities to learn, develop, and move up and across our global organization. Diverse and inclusive community of belonging, where colleagues are empowered to bring ideas to the table, take risks, and act. Generous Amgen Total Rewards Plan comprising healthcare, finance, wealth, and career benefits. Flexible work arrangements. APPLY NOW Objects in your future are closer than they appear. Join us. EQUAL OPPORTUNITY STATEMENT Amgen is an Equal Opportunity employer and will consider you without regard to your race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, or disability status. We will ensure that individuals with disabilities are provided a reasonable accommodation to participate in the job application or interview process, to perform crucial job functions, and to receive other benefits and privileges of employment. Please contact us to request an accommodation. . Salary Range 49 830,40 EUR - 67 417,60 EUR