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Network Engineer

Job Title: Network Engineer

Department: Platform Engineering

Reports to: Head of Platform Engineering

Role Overview:

We are seeking a Network Engineer to join Simpaisa Holdings, a cross-border payments and remittances company operating across the Middle East and South Asia. The ideal candidate will be responsible for designing, implementing, and maintaining the organisation's network architecture, connectivity, and security infrastructure across a multi-market payments platform. This encompasses network design, DNS management, CDN configuration, load balancing, peering arrangements, and secure connectivity to banking partners, payment networks, and regulatory systems. Strong expertise in Cloudflare, AWS networking, and network security for PCI-DSS compliant environments is essential. Experience with agile methodologies and collaborating with platform and security engineering teams is also preferable.

Key Responsibilities:

  • Design, implement, and maintain network architecture across all Simpaisa Holdings environments, including production payment processing, corporate, and development networks.
  • Manage and optimise Cloudflare configurations, including DNS, CDN, WAF, DDoS protection, rate limiting, and edge routing for payment APIs and merchant-facing services.
  • Design and maintain AWS networking infrastructure, including VPCs, subnets, security groups, NACLs, Transit Gateway, Direct Connect, and VPN connectivity.
  • Implement and manage load balancing solutions (Cloudflare Load Balancing, AWS ALB/NLB) for high-availability payment processing services.
  • Establish and maintain secure network connectivity to banking partners, payment networks (SWIFT), card schemes, and regulatory reporting systems.
  • Ensure network segmentation and controls meet PCI-DSS Cardholder Data Environment (CDE) requirements and ISO 27001 standards.
  • Monitor network performance, availability, and security, using observability tools to identify and resolve issues proactively.
  • Manage DNS infrastructure, including domain management, DNSSEC, and DNS-based traffic management across all operating markets.
  • Document network architecture, configurations, peering arrangements, and connectivity diagrams clearly and comprehensively, maintained in Bitbucket repositories.
  • Troubleshoot network issues affecting payment processing, providing rapid resolution for connectivity failures impacting transaction flows.
  • Collaborate with security, platform, and production engineering teams to ensure network infrastructure supports reliability, security, and compliance objectives.
  • Contribute to the improvement of network processes, automation, and infrastructure-as-code practices.
  • Stay up-to-date with the latest trends in network engineering, cloud networking, and security best practices for financial services.

Required Skills and Experience:

  • Agile: Awareness of agile principles and how network infrastructure supports agile platform and development teams.
  • Communication: Good written and verbal communication skills with the ability to explain network architecture concepts clearly to technical and non-technical audiences.
  • Strategy and Planning: Ability to understand network architecture plans and contribute to connectivity strategies across multiple markets. Strong organisational skills for managing network tasks and priorities.
  • Problem-solving and Analytical skills: Strong technical aptitude and problem-solving skills to diagnose and troubleshoot network issues effectively, particularly under incident pressure.
  • Network Engineering Expertise: Solid understanding of network protocols (TCP/IP, BGP, DNS, HTTP/S, TLS), network security (firewalls, WAF, DDoS mitigation, network segmentation), and cloud networking (AWS VPC, Transit Gateway, Direct Connect). Hands-on experience with Cloudflare (DNS, CDN, WAF, Load Balancing, Workers). Experience with load balancing, reverse proxying, and traffic management. Familiarity with infrastructure-as-code (Terraform) and network automation. Relevant certifications (e.g., AWS Advanced Networking, CCNA/CCNP) are a plus.
  • Payments Domain Awareness: Understanding of network requirements for payment processing systems, including low-latency connectivity, secure partner connectivity, and PCI-DSS network segmentation requirements.
  • Teamwork and Collaboration: Ability to work effectively in a team environment and collaborate with platform, security, and production engineering teams across geographically distributed locations.

General Requirements for the Role:

  • Bachelor's Degree in related field: A bachelor's degree in Information Technology, Computer Science, Engineering, or a related field is required.
  • 3+ years of experience in network engineering or infrastructure: Minimum of 3 years of progressive experience in designing, implementing, and maintaining network infrastructure, preferably within cloud-heavy or financial services environments.
  • Experience with cloud networking and CDN platforms: Demonstrated experience in managing AWS networking and Cloudflare (or equivalent CDN/edge platforms).
  • Proven track record of maintaining reliable network infrastructure: A verifiable history of contributing to the reliable and secure operation of network infrastructure supporting business-critical services.

Benefits and Perks:

  • Competitive salary and comprehensive benefits package.
  • Opportunity to work with cutting-edge payments and fintech infrastructure and collaborate with skilled professionals across multiple markets.
  • Professional development and training opportunities, including networking certification sponsorship.
  • Inclusive company culture that values diversity and innovation.