2,557 protocol engineer jobs at 1,185 companies in United States
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Senior Protocol Engineer
United States
RemoteFull Time
5+ YOE5+ years software engineering experience, 2–3+ years professional Rust, strong foundation in blockchain concepts, low-level systems or distributed systems experience; participate in on-call rotation.
Rust
2mo
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Protocol Engineer (Injective Labs)
United States
RemoteFull Time
3+ YOE3+ years as a blockchain engineer; experience in trading/exchange; Golang production codebases; strong Go; knowledge of blockchain, DeFi, DEX; CS fundamentals; ability to explain technical concepts.
Go, Cosmos-SDK, Tendermint, CosmWasm, Ethereum, Solidity
2mo
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Protocol Engineer
United States
RemoteFull Time
Minimum 3 years as a blockchain engineer; experience with trading or exchanges; worked on two or more production Golang codebases; strong Go knowledge; solid understanding of blockchain, DeFi, DEX; CS fundamentals; ability to communicate technical concepts.
Go, Cosmos-SDK, Tendermint, CosmWasm, Ethereum, Solidity
3mo
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Principal Protocol Engineer
New York City, New York, United States
$150k-$293k/yr HybridFull Time
8+ YOE8+ years software engineering; 4+ years smart contract/protocol development; Solidity expert; Rust knowledge; token standards; governance and integration experience.
Solidity, Rust
1mo
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Blockchain Protocol Engineer — Distributed Value Systems
Santa Monica, California, United States
$180k-$250k/yr OnsiteFull Time
4+ YOE4+ years of protocol or smart-contract engineering; production Rust or Solidity experience; strong security mindset; consensus or cryptography depth preferred.
Rust, Solidity, EVM, TypeScript
2mo
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Protocol Director
United States or New York City
RemoteFull Time
Deep protocol expertise (Ethereum, Solana, Chainlink), proven technical people leadership, operational fluency (capacity planning, on-call, incident response), strong technical communication and strategic protocol thinking.
Ethereum, Solana, Chainlink, Chainlink CCIP, Chainlink Data Feeds, Chainlink Functions, Agave, Firedancer, RPC
2mo
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Clinical Protocol Developer
Portsmouth, Virginia, United States
OnsiteFull Time
5+ YOEBachelor's degree, 5 years clinical research experience, ability to obtain Secret clearance; experience with protocol development, regulatory submissions, and research documentation.
eIRB, clinicaltrials.gov
2w
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Solana Protocol Engineer
United States
RemoteFull Time
3+ YOE3+ years building payment, custody, or settlement systems; experience orchestrating flow of funds across on-chain and off-chain venues; familiarity with Solana or EVM development; secure key management experience.
Solana, Rust, Anchor, EVM, Solidity, MPC
1mo
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Principal Engineer, Network Protocol Architect
San Jose, California, United States
$180k-$250k/yr OnsiteFull Time
B.S. in Computer/Electrical Engineering; experience with memory semantic fabrics and protocols (AXI, CHI, UALink, ESUN, UCIe, PCI-SIG, Ethernet); strong Python skills; SSO participation and customer-facing communication.
AXI, CHI, UALink, ESUN, Ethernet (802.3dj), UCIe, PCI-SIG, OCI-MSA, Python, Antigravity, Claude, Amazon AWS, Google Cloud, OCP, OIF, IEEE 802.3
1mo
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Lead Protocol Engineer (Go / Cryptography)
Iselin or Columbus or Concord
$159k-$305k/yr HybridFull Time
5+ YOE5+ years specialty software engineering; 3+ years backend/systems programming with expert-level Go; ECC experience; BFT consensus, P2P, and state replication experience; familiarity with Cosmos SDK/CometBFT desirable.
Go, Cosmos SDK, CometBFT, Tendermint, ABCI++, gnark-crypto, Ristretto255, Pedersen Commitments, Bulletproofs
3mo
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Protocol Software Engineer - Storage
New York City, New York, United States
HybridFull Time
5+ YOE5+ years infrastructure engineering; 2+ years EVM work on Layer 1; deep end-to-end EVM understanding; proven tech lead; strong prioritization; problem-solving; tooling improvements.
1mo
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Network Protocol Software Engineer
Round Rock or Austin
OnsiteFull Time
8+ YOEBachelor's in EE/CS/STEM, 8+ years working with industrial network protocols (Ethernet/IP, Modbus, PROFINET, OPC UA), C++ experience, strong Ethernet/real-time networking knowledge, familiarity with certification and compliance; must be authorized to work in the US without sponsorship.
C++, C#, Ethernet/IP, Modbus, PROFINET, OPC UA, LLDP, PRP, DeltaV, ISA/IEC 62443, NIST
1w
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Principal Wireless Protocol Architect/Engineer
San Mateo, California, United States
$210k-$315k/yr HybridFull Time
15+ YOEBachelor’s degree or equivalent experience, 15+ years in embedded firmware, strong RF/wireless expertise, C/C++, ARM, hardware bring-up, automated testing, and leadership of shipped products.
C, C++, Bluetooth, ARM, Linux, Windows
3d
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Firmware Engineer, Modem Access Stratum, Layer 1 Protocol
New York or Mountain View
$138k-$197k/yr OnsiteFull Time
5+ YOEBachelor's degree or equivalent practical experience; 5 years programming in C, C++, or Python; experience with wireless protocols, 3GPP, modems, LTE, and 5G.
C, C++, Python, 3GPP, LTE, 5G, Android
6d
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System Architect - Protocol Bridges
San Jose or Austin or Chandler
$197k-$271k/yr OnsiteFull Time
15+ YOE15+ years in new product definition and architecture specification; expertise in interface protocols, protocol bridging, embedded systems, customer engagement, technical documentation, and cross-functional collaboration. BSEE required; MSEE preferred.
USB2, eUSB2, I3C, I2C, UART, SPMI, SDIO, I2S, IEEE1722, IEEE1588, SystemC
2w
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Senior Software Engineer, Protocol (Rust)
New York City, New York, United States
RemoteFull Time
Production Rust systems experience, deep knowledge of Ethereum/EVM and distributed systems, strong communication, ability to ship production software and write robust tests.
Rust, Go, Solidity, EVM, JSON-RPC, op-node, kona, Reth, OP Stack
6d
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Senior Vulnerability Researcher (5G & Protocol Security)
Florham Park, New Jersey, United States
$113k-$238k/yr OnsiteFull Time
7+ YOERequires 7+ years in vulnerability research, protocol analysis, or reverse engineering; 5G/3GPP expertise; Linux or RTOS experience; US citizenship; clearance eligibility; and proficiency with C/C++ and Python.
Python3, Linux, RTOS, IDA Pro, Ghidra, Binary Ninja, C, C++, Python, JTAG, UART, Angr, Manticore, NGAP, HTTP/2, PFCP, GTP-U
2mo
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Protocols Engineer
Houston, Texas, United States
OnsiteFull Time
5+ YOEBachelor's degree in CS/Software/Network Engineering or related; 5+ years software development experience; strong TCP/IP networking and protocol knowledge; proficient in C/C++/Rust and Python; familiarity with Unix/Linux and RTOS environments.
C, C++, Rust, Python, Unix/Linux, RTOS, VxWorks, TCP/IP, Gitlab, Docker, Confluence, Jira, SQL
1w
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OP Labs - Senior Software Engineer, Protocol (Rust)
London or New York City
RemoteFull Time
Production software experience, maintainable Rust systems, deep Ethereum and distributed systems knowledge, and strong design communication. Go, Solidity, op-node, kona, or Reth experience is preferred or a bonus.
Rust, Ethereum, EVM, JSON-RPC, Go, Solidity, op-node, kona, Reth
2w
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Design Engineer
Owings Mills, Maryland, United States
$80k/yr OnsiteFull Time
2+ YOEAssociate or Bachelor's in engineering, 2+ years engineering/systems design experience, proficiency with AutoCAD and Microsoft Office, knowledge of building automation and protocols.
AutoCAD, Microsoft Office, Delta, Reliable Controls, BACnet, Modbus, LON, Ethernet, DDC
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