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

SPTel Pte Ltd; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

SPTel Pte Ltd is seeking a Customer Solution Architect / Presales Engineer (Connectivity & Managed Services) in Singapore. You will partner with sales to capture technical requirements and architect end-to-end solutions across core WAN, optical transport, and enterprise LAN/edge.

Lead design reviews, prepare proposals, and present to CTOs and IT leaders. You will demonstrate mastery of DWDM, DCI, SD-WAN, and security integrations while guiding the RFP/tender process and ensuring successful

Qualifications

• Bachelor's or diploma in telecommunications, CS, EE, or related field.
• 4–6 years of presales/solution-architecture/network-engineering in ISP/telecom/MSP.
• Deep mastery of Optical Transport Networks (OTN/ITU-T G.709) and FlexGrid/ROADM.
• Hands-on 100G/400G/800G coherent optics; OSNR and dispersion management.
• OLPS/GMPLS protection, dark fibre design, and high-capacity DCI.
• Proven DCI topologies linking major data centers in Singapore.
• Knowledge of MACsec and QKD integration for secure transport.
• EVPN-VXLAN over DWDM/OTN and SR-MPLS/SRv6 knowledge.
• BGP-4, OSPF, MPLS/L2VPN/L3VPN, MEF 3.0 CE.
• Enterprise Wi-Fi (Wi-Fi 6/6E), SD-WAN platforms; strong proposal skills.
• Strong presentation and technical proposal writing.

Responsibilities

• Lead discovery with sales and design end-to-end solutions across WAN, optical, and LAN/edge.
• Architect high-availability optical and transport topologies for RFPs and tenders.
• Create HLD/LLD, BOMs, and technical proposals for customers.
• Present architecture and network diversity models to CTOs and IT leaders.
• Coordinate with product, network engineering, and service ops for deployments.

Skills

Presales

Solution Architecture

Network Engineering

Optical Transport

WDM/ROADM

BGP/OSPF

MPLS

SD-WAN

Security (NGFW)

RFP/Proposals

HLD/LLD

Education

Bachelor's or Diploma in Telecommunications/CS/EE

Tools

Cisco Meraki

Aruba

Ruckus

Fortinet

Palo Alto

MEF 3.0

Job description

SPTel is a Singapore-based enterprise telecommunications provider, now fully owned by Seraya Partners. SPTel delivers software-defined, end-to-end digital connectivity powered by nationwide fibre infrastructure, enabling enterprises to provision and manage network services on demand. Our network is known for reliability and diversity because our unique fibre pathways combine leased SP Group infrastructure with owned fibre pipes laid alongside the power network cables. Our network structure also ensures your data takes the shortest possible route for optimal performance.

Job Overview

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.