Senior Software Engineer (Backend → AI Applications) - Remote, Worldwide at Nethermind

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Requirements

Strong backend track record with experience in designing and building production APIs, workers, and data flows for AI-powered features
Demonstrably upskilled in LLMs/ML (projects, repos, papers, or shipped features)
Familiarity with model APIs and open-source models
Experience with tool/function calling, structured outputs, streaming, and robust error handling
Strong distributed systems fundamentals, including concurrency, queues/streams, retries, backoff, consistency trade-offs
Experience with eval frameworks, prompt/program design, JSON schema/structured outputs, and multi-agent orchestration
Familiarity with model customization, LoRA/fine-tunes/distillation, and dataset curation
Experience with security and compliance, including PII handling, GDPR, and data governance
Knowledge of blockchain systems/Web3 (some clients are institutions and blockchain companies)
Experience with OSS contributions, technical writing, or public demos of AI features
Strong ownership and leadership skills, with experience in leading projects end-to-end
Familiarity with cloud and DevEx (Docker/Kubernetes, AWS/GCP/Azure, CI/CD, IaC, and production monitoring)
Experience with profiling, latency, memory, and token usage
Familiarity with caching, batching, and fallbacks
Experience with containerizing and managing models (e.g., vLLM/Triton)
Proficiency in SQL (Postgres/MySQL), caching (Redis), and vector databases (e.g., pgvector/FAISS/Pinecone)
Comfort with cloud and DevEx
Experience with eval frameworks, prompt/program design, and JSON schema/structured outputs
Familiarity with multi-agent orchestration
Experience with model serving and performance optimization (vLLM, tensor/kv-cache tuning, batching, quantization)
Security and compliance expertise, including PII handling, GDPR, and data governance
Experience with blockchain systems/Web3
Knowledge of OSS contributions, technical writing, or public demos of AI features
Strong ownership and leadership skills
Familiarity with cloud and DevEx
Experience with containerizing and managing models
Proficiency in SQL (Postgres/MySQL), caching (Redis), and vector databases

Responsibilities

Design and build production APIs, workers, and data flows for AI-powered features
Ship features using model APIs and open-source models
Implement tool/function calling, structured outputs, streaming, and robust error handling
Stand up RAG pipelines (chunking, embeddings, vector stores)
Quality checks and freshness/consistency workflows
Evaluate features using offline/online evals, guardrails, and red-teaming hooks
Profile latency, memory, and token usage
Add caching, batching, and fallbacks
Keep cost/SLA within targets
Own projects end-to-end with crisp written docs, RFCs, and clear stakeholder updates
Mentor peers and raise the engineering bar
Qualifications: Proven senior-level backend experience (typically 4–8 years shipping services at scale)
Strong in one of: Python or TypeScript/Node; plus familiarity with a systems language (Go/Java/C++) is a bonus
Solid distributed systems fundamentals: concurrency, queues/streams, retries, backoff, consistency trade-offs
Datastores: SQL (Postgres/MySQL), caching (Redis), and comfort with vector databases (e.g., pgvector/FAISS/Pinecone)

Skills

Nethermind

Blockchain solutions for Ethereum network

About Nethermind

Nethermind.io focuses on blockchain solutions, particularly for the Ethereum network, offering services like a customizable Ethereum client, smart contract development, and security audits. They also research Layer 2 scaling solutions to improve transaction speed and develop Maximal Extractable Value (MEV) solutions for fair transaction processing. Their unique offerings include open-source tools like Warp for deploying smart contracts on StarkNet and the Voyager block explorer for interacting with StarkNet. The goal is to empower developers and enterprises to effectively use decentralized technologies while generating revenue through service fees and consulting.

London, United KingdomHeadquarters

2017Year Founded

$535KTotal Funding

GRANTCompany Stage

Cybersecurity, Crypto & Web3Industries

201-500Employees

Benefits

Hybrid Work Options

Remote Work Options

Risks

Competition from Ethereum client developers like Geth and Besu may impact market share.

Rapid blockchain evolution requires Nethermind to continuously innovate and adapt.

Potential security vulnerabilities in Warp transpiler could expose clients to risks.

Differentiation

Nethermind offers a high-performance Ethereum client, enhancing blockchain interaction efficiency.

Their Warp transpiler aids developers in deploying smart contracts on StarkNet.

Nethermind's security audits ensure blockchain applications are secure and free from vulnerabilities.

Upsides

Increased interest in Ethereum Layer 2 solutions boosts demand for Nethermind's tools.

Partnership with EigenLayer enhances Nethermind's influence in the Ethereum ecosystem.

zkSync Era Remix Plugin development attracts more developers to Nethermind's platform.

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