Solutions Architect / Presales Engineer

SPTel Pte Ltd; Hong Kong; On-site; HKD 700,000 - 1,000,000; Full time

Job summary

SPTel Pte Ltd is seeking a Customer Solution Architect / Presales Engineer (Connectivity & Managed Services) to partner with sales teams, lead technical discovery, and architect integrated solutions across core WAN, optical transport, and enterprise LAN/edge networks.

You will design high-availability optical and transport topologies, manage end-to-end solution architecture, and drive technical responses for enterprise RFPs, tenders, and POCs, delivering compelling designs and concrete BOMs

Qualifications

• Bachelor’s degree in a telecoms/IT field required.
• 4–6 years presales/solution-architecture experience in ISP/telecom/MSP.
• Deep mastery of OTNs, DWDM, ROADM architectures.
• Experience with 100G/400G/800G optics and link budget calculations.
• Proficiency in BGP-4, OSPF, MPLS, SR-MPLS/SRv6, MEF 3.0 CE.
• Experience designing high-capacity, low-latency DCI topologies.
• Familiarity with SD-WAN, NGFW, and campus Wi-Fi deployments.
• Strong presentation and proposal writing skills.

Responsibilities

• Lead technical discovery and architect integrated solutions across WAN/optical transport.
• Design high-availability optical and transport topologies.
• Prepare HLD/LLD, BOM and technical proposals for RFPs.
• Present architecture and run POCs for enterprise stakeholders.
• Coordinate with product, network engineering, and operations to ensure smooth handoff.

Skills

BGP-4

MPLS L2/L3VPN

SR-MPLS / SRv6

DCI Topologies

Optical Transport Networks

SD-WAN

Wi-Fi Enterprise

Sales Presentations

Education

Bachelor's Degree or Diploma in Telecommunications, Computer Science, Electrical/Electronic Engineering

Tools

Cisco Meraki

Aruba

Ruckus

Fortinet / Palo Alto

MEF 3.0 CE

Job description

About the role

Customer Solution Architect / Presales Engineer (Connectivity & Managed Services)

Partner with sales teams to lead technical discovery, gather requirements, and architect integrated solutions spanning core WAN, optical transport, and enterprise LAN/edge infrastructure. Design high-availability optical and transport network topologies, manage end-to-end solution architecture, and lead technical response strategies for enterprise RFPs and tenders.

Key Responsibilities

• End-to-End Solution Architecture: Partner with sales teams to lead technical discovery, gather requirements, and architect integrated solutions spanning core WAN, optical transport, and enterprise LAN/edge infrastructure.

• Core Transport & Optical Mastery: Design high-availability optical and transport network topologies utilizing:

  • DWDM / Optical Transport: High-capacity wavelength services, dark fibre topology, FlexGrid/ROADM optical architectures, and ultra-low latency optical pathing.

  • DCI & Metro-Ethernet: High-throughput data center interconnects, E-Line (P2P), and E-LAN (MP2MP) Layer 2 Ethernet connectivity.

  • IPVPN & Managed Internet: MPLS Layer 3 VPNs, multi-homed BGP routing, clean-pipe DDoS mitigation, and business internet delivered over SPTel’s Software-Defined Network.

• Managed Edge & Enterprise Services Expertise: Architect fully managed enterprise solutions incorporating:

  • SD-WAN: Software-defined overlay networks, dynamic path selection, multi-cloud connectivity, and centralized cloud orchestration.

  • Managed Security & Firewall: Next-Generation Firewalls (NGFW), unified threat management (UTM), zero-trust access control, and cloud security integrations.

  • Managed Enterprise Wi-Fi & Switching: High-density enterprise Wi-Fi 6/6E deployment models, cloud-managed access switches, stackable core switches, and PoE budgeting for enterprise premises.

• RFP & Technical Bidding: Lead technical response strategies for enterprise RFPs, RFIs, and tenders. Author High-Level Designs (HLD), Low-Level Designs (LLD), Bill of Materials (BOM), and detailed technical proposals.

• Customer Presentation & POCs: Present solution architecture, network diversity models, and managed service SLAs to key enterprise stakeholders (CTOs, IT Directors, Infrastructure Managers). Direct and execute Proof-of-Concept (POC) demonstrations.

• Cross-Functional Alignment: Coordinate with Product Management, Network Engineering, Implementation, and Service Operations to ensure smooth transition from presales design to post-sales deployment and managed support.

Requirements

• Bachelor's Degree or Diploma in Telecommunications, Computer Science, Electrical/Electronic Engineering, or related fields

• Minimum 4–6 years of presales, solution architecture, or network engineering experience within an ISP, Telecommunications Provider, System Integrator, or Managed Service Provider (MSP)

• Deep technical mastery of Optical Transport Networks (OTN / ITU-T G.709 standards), Wavelength Division Multiplexing (C-band/L-band), and FlexGrid/Gridless ROADM architectures

• Practical expertise in 100G/400G/800G coherent optics (ZR/ZR+), optical link budget calculations, OSNR (Optical Signal-to-Noise Ratio), dispersion management, and non-linear optical effects

• Hands-on familiarity with optical protection schemes including 1+1 OLPS (Optical Line Protection Switch), ASON/GMPLS mesh restoration, and dark fibre/spectrum path design

• Proven track record designing high-capacity, sub-millisecond low-latency DCI topologies linking major Singapore carrier-neutral and hyperscale data centers (e.g., Equinix, Global Switch, Digital Realty, Singtel DC).

• In-depth knowledge of Layer 1/Layer 2 wire‑speed optical encryption protocols (MACsec, Quantum‑Safe / QKD integration) for ultra-secure data transport.

• Hands‑on knowledge of high-density 100G/400G client handoffs, transponder/muxponder architectures, and DCI‑specific overlay/underlay integration (e.g., EVPN‑VXLAN over DWDM/OTN).

• Strong foundation in BGP-4, OSPF, MPLS (L2VPN / L3VPN / VPLS), Segment Routing (SR-MPLS / SRv6), and Metro‑Ethernet (MEF 3.0 CE standards)

• Architecture experience with enterprise Wi‑Fi (e.g., Cisco Meraki, Aruba, Ruckus), managed switching (L2/L3 stackable switches), Next‑Gen Firewalls (Fortinet, Palo Alto), and SD‑WAN platforms.

• Exceptional presentation, technical proposal writing, and consultative selling skills

• Strong problem‑solving capability with a track record of translating business goals into resilient technical architecture