Infrastructure Engineer III
Confirmed on the employer's own hiring board on Oct 25, 2026. First seen by Alion on Sep 17, 2026. Sinch scores A on the Alion truth index.
ABOUT SINCH
Sinch is pioneering the way the world communicates. More than 150,000 businesses - including Google, Uber, Paypal, Visa, Tinder, and many others - rely on Sinch’s Customer Communications Cloud to power engaging customer experiences through mobile messaging, voice, and email.
Whether you need to verify users or craft omnichannel campaigns, Sinch makes it easy. Our AI-infused Super Network, APIs, and applications ensure you can connect with your customers reliably and securely, at every step of their journey.
At Sinch we “Dream Big”, “Win Together”, “Keep it simple”, and “Make it Happen”. These values are our foundation!
DESCRIPTION
We're looking for a hands-on engineer with a solid networking background to join our Global Infrastructure team. You'll be responsible for supporting and maintaining our enterprise network, cloud networking, VPN connectivity, and Zscaler environment. This is a hands-on engineering role focused on troubleshooting, operational support, and continuous improvements while working closely with Infrastructure and Security teams.
Strong English communication skills are important, as you'll collaborate with colleagues across multiple regions.
MAIN RESPONSABILITIES:
Participate in the teams’on call rotation.
Act as 3rd line support for networking, VPN, cloud networking, and Zscaler related incidents and service requests.
Configure, maintain, and troubleshoot VPN connectivity and Zscaler services.
Support networking in AWS and Azure, including VPC/VNetconnectivity and related infrastructure.
Troubleshoot network connectivity issues and work with other teams to resolve incidents.
Create and maintain technical documentation.
Contribute to continuous improvements and operational excellence within the team.
REQUIREMENTS
Good understanding of enterprise networking fundamentals, including TCP/IP, routing, switching, DNS, DHCP, NAT, VLANs, and network troubleshooting.
Experience configuring, maintaining, and troubleshooting VPN solutions, including IPsec VPN, site-to-site VPN, and remote access VPN.
Understanding ofVPN authentication, certificates, encryption, and secure connectivity.
Experience working with AWS or Azure, including VPC/VNet, routing, VPN connectivity, and general cloud networking.
Ability to troubleshoot connectivity issues across premises and cloud environments.
Experience with Zscaler (ZIA/ZPA), either supporting the platform, maintaining it, or participating in a migration. This is a key requirement for the role.
Good understanding of networking best practices and basic security concepts.
Strong English communication skills and the ability to collaborate in a global team.
Nice to Have:
Experience with enterprise firewalls such as Palo Alto or Cisco.
Experience with office and branch networking, including solutions such as Cisco Meraki.
Experience with hybrid networking.
Familiarity with Terraform or network automation.
Experience with SASE technologies.
OUR HIRING PROCESS
We are committed to ensuring a recruitment process that is fair, objective, consistent, and inclusive. Our approach includes structured, competency-based interviews designed to evaluate your skills, experience, and qualifications relevant to the role. At times, we may include a data-driven assessment to enhance our hiring success and identify candidates likely to excel.
We believe in a two-way process and encourage you to ask questions throughout the journey. If this role isn't what you're looking for, please explore the other opportunities listed on our career page: https://www.sinch.com/careers/. No matter who you are, we hope you find an exciting path forward - hopefully with us!
BENEFITS
STAY HEALTHY: We cover 100% of medical and dental plans for Sinchersand eligible dependents through Bradesco Saúde.
FLEXIBLE BENEFITS: With the Cajuflexible benefit card, our Sincherscan choose to use benefits on food, education, and home office assistance.
FAMILY FIRST: Our Sincherscan enjoy paid maternity leave for 180 days and paternity leave for 30 days. Plus, we provide daycare assistance for kids up to five years old.
EVERYDAY WELLBEING: We partner with Wellhubto help Sinchersaccess gyms and wellness options.
SECURE YOUR FUTURE: Our Partnership with Prudential life insuranceprovides coverage for all Sinchersin the events of unexpected absences, serious illness, accidents, and disabilities.
DIVERSITY AND INCLUSION: We offer annual reimbursements for certain expenses related to disabilities and/or transgender needs.
TAKE A BREAK: Our Sincherscan take a day off on their birthday to celebrate with their loved ones.