Senior Network Engineer

Nubank is a young company with a large ambition: revolutionize the lethargic financial services industry. In Brazil, since 2014 we have been actively servicing millions of clients with our mobile-controlled credit card product and digital bank account, and is the largest challenger bank in the world outside of Asia. We’re a technology-driven financial services Unicorn funded by Sequoia Capital, Founders Fund, Tiger Global, Kaszek Ventures, and QED Investors. Nubank challenges an outdated and bureaucratic system by building a simple, safe, and 100% digital environment that delights our customers.

Shipping valuable features requires dealing with distributed systems, infrastructure, monitoring and observability, platform engineering and production microservices. Our engineers commonly rotate focus on these responsibilities. We consistently work with and explore new technologies, and thus value professionals who are open to learning new things, regardless of preexisting comfort zones.

About the Position

The Senior Network Engineer will work along the Global IT Engineering team, collaborating with infrastructure and support engineers on various connectivity projects, taking end-to-end accountability for the lifecycle of connectivity infrastructure of Nubank products, including Architecture & Engineering, Delivery, and Support.

Key Responsibilities:

• Design customized solutions as required to support Business objectives, wherever applicable.
• Execute High Level Design and Low Level Design for Products connectivity solutions.
• Assist in the development of networking architecture and Global standards including hardware/software, protocol, transport, and topology standards.
• Design, build, and improve peripheral network infrastructure and platform through the execution of projects and changes based on standards and reaching all quality, time, cost, scope, availability, and reliability parameters.
• Support the enterprise network infrastructure, including troubleshooting incidents in a timely manner, handle network changes, and participate in problem management processes including root cause analysis and configuration management.
• Provide reliable and stable infrastructure via best practices, standards, simplified support models, automated processes, operational excellence, and outstanding customer satisfaction.
• Implement effective monitoring and a robust control and delivery of solutions services to identify issues proactively within the agreed SLAs using different methodologies, tools, and processes.
• Configuration, maintenance, and support of network solutions for Nubank’s products, including Data Centers and 3rd Parties.
• Configuration and maintenance on network equipment across multivendor and platform technologies such as Juniper, Cisco, F5, Fortinet, AWS, Palo Alto, and Infoblox.
• Willingness to produce documentation and written deliverables.

We are looking for a person who has:

• Strong working knowledge in L2 (Switching) protocols: STP, VLAN, LACP, Stacking, Bundle ethernet, Port security.
• Strong working knowledge in Layer 3 (Routing) protocols: OSPF, IS-IS, BGP (iBGP, eBGP), IPv6, VXLAN.
• Ability to implement protocols and solutions for Fast Convergence, Redundancy, and high availability such as HSRP, VRRP, VRF.
• Solid experience configuring and implementing filtering secure protocols: ACL, Prefix-list, Route-map, PBR, GRE, IPSEC, TLS/EAP, VPN, DMVPN.
• Demonstrated knowledge/experience in WAN network environments: MPLS, L3VPN, L2VPN, MP-BGP, EVC, SD-WAN, Carrier Ethernet.
• Ability to implement network protocol services such as TCP/IP, DNS, DHCP, NTP, HTTPS, SCP, FTP, SNMP, AAA, NAT, Multicast, and VoIP.
• Knowledge of the principles of operation and configuration of Data Center Spine-and-Leaf Architecture.
• Progressive knowledge/experience managing projects of increasing size and complexity including the utilization of project planning and project dashboard tools.
• Load-balancing (F5 Big-IP LTM/GTM) design experience and troubleshooting.
• Proficiency in configuring and managing Fortigate and PaloAlto Next Generation firewalls.
• Functional knowledge of network management/observability tools like Panorama, Prometheus/Grafana, SolarWinds, Cisco ThousandEyes, etc.
• Knowledge of Infrastructure Governance fundamentals, such as Capacity Planning, Risk & Vulnerability Management, Incident & Change management.

The following are considered a plus:

• Experience with developing and deploying Cluster Datacenter, Cloud HW, and infrastructure.
• Scripting or programming experience using Bash, Perl, Python, and automation tools such as Ansible, Docker, Kubernetes.
• Active certifications in technologies such as CCNA/CCNP CISCO, FORTINET, ARUBA, AWS, Juniper, HCA HCP Huawei, Palo Alto.
• Hands-on experience in Mexico Financial Services Network and some of its main products, SPEI, DIMO.
• Hands-on experience with Cloud networking principles in AWS.
• Knowledge and experience with key network security protocols, such as IDS/IPS, URL Filtering, and SIEM.

You will fit well if:

• You possess solid troubleshooting and debugging skills with a passion for creative and analytical problem-solving.
• You can analyze complex data and develop innovative solutions.
• You have the ability to take ownership of, and focus on critical initiatives.
• You demonstrate strong customer orientation, quality, and results orientation.
• You have proven success in contributing to a team-oriented environment.
• You possess communication, knowledge sharing, collaboration, professionalism, teamwork, and an open disposition to learn.
• You are highly effective in ambiguous environments and demonstrate the ability to develop clear strategies and plans with appropriately managed risks.
• You can consult with and develop relationships with in-house engineers and developers to promote creative solutions and improve customer satisfaction.
• You have the ability to collaborate directly with customers and team members to fulfill deliverables.
• You can discuss with vendors on new product offerings, evaluate new products and technologies, and recommend selected network services or products to leadership.
• You demonstrate communication proficiency in facilitating clear and consistent understanding across time zones and language boundaries.

Our Nu Way of Working

Our work model is hybrid, with cycles that can range from two to three months according to business expertise. For every eight or twelve weeks of remote work, one will be at the office.

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