Senior Networking Engineer — Mesh Stack (Remote)

Ditto; Washington, Northern (District of Columbia, KY); Hybrid; USD 140,000 - 210,000; Full time

Benefits offered by this job

Equity

Flexible time off

Optional Atlanta office access

Job summary

Ditto is seeking a Software Engineer – Networking to design and implement core components of our high-performance networking stack, spanning overlay networking and multiple transport protocols for edge environments.

You will drive architecture toward modularity, debug complex networked systems, and optimize throughput, latency, and reliability while collaborating with a distributed team and learning cutting-edge mesh networking technologies.

Qualifications

• 5+ years of professional experience building systems software, with at least 3 years focused on networking, transport protocols, or routing.
• Strong proficiency in Rust or C++, including ownership and borrowing semantics, async runtimes, concurrency primitives, and profiling / optimization techniques.
• Understanding of mesh networking topics such as TCP, UDP, and QUIC semantics and tradeoffs, including connection establishment, congestion and flow control, retransmission behavior, MTU/fragmentation, and practical implications for latency, throughput, and reliability in real-world systems.
• Exposure to or experience working with networked services and protocols. Demonstrated ability to debug complex behavior in networked and concurrent systems (race conditions, deadlocks, resource leaks, latency spikes).
• Experience designing modular APIs and abstractions that scale across multiple implementations and evolve safely over time.
• Clear written and verbal communication skills in a distributed, asynchronous team environment.
• A passion to learn new networking technologies, APIs, and approaches to build at the bleeding edge of mesh networking.

Responsibilities

• Design, implement, and own core components of Ditto’s networking and transport stack, spanning overlay networking (routing, virtual connections, channel lifecycle) and underlying physical transports and protocols (BLE, LAN, Wi‑Fi Aware, AWDL, etc.).
• Drive the re-architecture of the networking stack toward a more modular, scalable, and high-performance design, establishing clear interfaces and ownership boundaries between transport layers and mesh abstractions.
• Debug and systematically improve real-world connectivity issues including data transfer reliability, MTU negotiation, pairing instability, throughput ceilings, and cross-platform data sync behavior.
• Build and optimize transport mechanisms with explicit attention to flow control, backpressure, congestion handling, retries, connection lifecycle management, and failure recovery.
• Identify and eliminate performance bottlenecks across latency, memory footprint, CPU utilization, and tail behavior in highly concurrent, asynchronous systems.
• Design protocol state machines, wire formats, and transport abstractions that remain correct under unreliable networks, intermittent connectivity, and constrained environments.
• Establish meaningful observability through targeted logging, metrics, and diagnostics to enable rapid production debugging and root‑cause analysis.

Skills

Networking

Rust

C++

Async programming

Performance optimization

Distributed systems

Profiling

Debugging concurrent systems

Tools

Rust

C++

Job description

Ditto is seeking a Software Engineer – Networking to design and implement core components of our high-performance networking stack, spanning overlay networking and multiple transport protocols for edge environments.

You will drive architecture toward modularity, debug complex networked systems, and optimize throughput, latency, and reliability while collaborating with a distributed team and learning cutting-edge mesh networking technologies.