{"id":1511560,"url":"https://alion.io/job/sptel-solutions-architect-presales-engineer","title":"Solutions Architect / Presales Engineer","company":{"id":175331,"name":"SPTel","domain":"sptel.com","url":"https://alion.io/company/sptel","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Solutions","role_family":"Solutions","seniority":"staff","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Singapore"],"countries":["SG"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":5500,"max":7500,"currency":"SGD","period":"month","gross":true,"usd_annual":70428},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"BGP","optional":false},{"name":"Layer 2","optional":false},{"name":"MPLS","optional":false},{"name":"OSPF","optional":false},{"name":"Wi-Fi","optional":false},{"name":"Zero Trust","optional":false}],"status":"live","first_seen_at":"2026-09-30T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-09-30T00:00:00Z","board_verified":false,"closed_at":null,"days_open":23,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":23},"description":"Key Responsibilities\nEnd-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.\n\nCore Transport & Optical Mastery: Design high-availability optical and transport network topologies utilizing:\nDWDM / Optical Transport: High-capacity wavelength services, dark fibre topology, FlexGrid/ROADM optical architectures, and ultra-low latency optical pathing.\n\nDCI & Metro-Ethernet: High-throughput data center interconnects, E-Line (P2P), and E-LAN (MP2MP) Layer 2 Ethernet connectivity.\n\nIPVPN & Managed Internet: MPLS Layer 3 VPNs, multi-homed BGP routing, clean-pipe DDoS mitigation, and business internet delivered over SPTel’s Software-Defined Network.\n\nManaged Edge & Enterprise Services Expertise: Architect fully managed enterprise solutions incorporating:\nSD-WAN: Software-defined overlay networks, dynamic path selection, multi-cloud connectivity, and centralized cloud orchestration.\n\nManaged Security & Firewall: Next-Generation Firewalls (NGFW), unified threat management (UTM), zero-trust access control, and cloud security integrations.\n\nManaged 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.\n\nRFP & 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.\n\nCustomer 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.\n\nCross-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.\n\nRequirements\nBachelor's Degree or Diploma in Telecommunications, Computer Science, Electrical/Electronic Engineering, or related fields\n\nMinimum 4–6 years of presales, solution architecture, or network engineering experience within an ISP, Telecommunications Provider, System Integrator, or Managed Service Provider (MSP)\n\nDeep technical mastery of Optical Transport Networks (OTN / ITU-T G.709 standards), Wavelength Division Multiplexing (C-band/L-band), and FlexGrid/Gridless ROADM architectures\n\nPractical 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\n\nHands-on familiarity with optical protection schemes including 1+1 OLPS (Optical Line Protection Switch), ASON/GMPLS mesh restoration, and dark fibre/spectrum path design\n\nProven 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).\n\nIn-depth knowledge of Layer 1/Layer 2 wire-speed optical encryption protocols (MACsec, Quantum-Safe / QKD integration) for ultra-secure data transport.\n\nHands-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).\n\nStrong foundation in BGP-4, OSPF, MPLS (L2VPN / L3VPN / VPLS), Segment Routing (SR-MPLS / SRv6), and Metro-Ethernet (MEF 3.0 CE standards)\n\nArchitecture 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.\n\nExceptional presentation, technical proposal writing, and consultative selling skills\n\nStrong problem-solving capability with a track record of translating business goals into resilient technical architecture\n\nSkills\nTechnical Demonstrations, Low Level Design, Enterprise Services, Dc, MPLS, Bill of Materials, Low-Latency Connectivity, Multiplexing, Computer Science, Product Management, Sla Management, Physical Optics, Liaise With Technical Teams, RFP Responses, Telecom Engineering, 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