Hoplynk ยท 1 month ago
Software Engineer, Network & Protocol Team (San Francisco, CA)
San Francisco, CA
Full-time
Hybrid
Mid LevelHoplynk is a pre-seed startup building the communications and networking layer for the intelligent edge, ensuring resilient connectivity for autonomous systems. The role involves being the first networking specialist to design, ship, and measure a robust multipath networking protocol on Linux, focusing on low-level kernel and routing policies.
Computer Software
Responsibilities
Design and implement the multipath routing/transport stack on Linux, including policy engines for path selection, subflow management, and failover
Define and maintain SLOs for latency, loss, failover time, and goodput
Build and optimize telemetry systems on resource constrained devices: per-subflow RTT/RTTVAR, cwnd, loss/reordering, packet sampling, and device-health signals; keep schemas stable as the system grows
Design and run experiments with simulated networks in QEMU
Partner with embedded/firmware on BSP, drivers, OTA updates, and device observability
Support deployments and onboarding: capture traces, triage issues, and harden release processes as we scale customers
Qualification
Required
Solid Linux networking experience at L3/L4 with iproute2 / netlink / tc
Familiarity with low level programming languages like C/C++ and Rust
A track record of improving latency, reliability, or throughput via shaping, queue management, or congestion control
Comfort with transport and routing protocols such as TCP, UDP, QUIC, MPTCP, MPLS, other routing protocols
Experience building network telemetry (RTT, loss, cwnd, packet sampling) with stable data models
Ability to design experiments, simulate real conditions, and measure results
Clear writing and documentation; ability to mentor and set engineering standards
Preferred
Routing & Fast-Path: FRR, Babel, OLSR, batman-adv; frameworks like DPDK; Segment Routing (SR-MPLS/SRv6)
Wireless & Cellular Networking: CGNAT, captive portals
Embedded & Security: OpenWrt, Yocto, Buildroot; OTA frameworks (RAUC/Mender), A/B partitioning, secure boot/firmware signing
Timing & Observability: NTP, PTP, perf, ftrace, pcap, mptcpd, gNMI/streaming telemetry
Hardware & Applied Domains: Schematics interpretation, PHY bring-up testing; robotics/autonomy networks in challenging RF environments
Company
Hoplynk
2-10 employees
Funding
Current Stage
Early StageCompany data provided by crunchbase