Senior Staff Backend Engineer

🔥 20 minutes ago

🌐 Kazakhstan, Georgia, +4 more countries – Remote

🇰🇿 Kazakhstan – Remote 🇬🇪 Georgia – Remote 🇦🇲 Armenia – Remote 🇷🇸 Serbia – Remote 🇧🇾 Belarus – Remote 🇺🇿 Uzbekistan – Remote

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 15%

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The Vault

WebsiteLinkedInAll Job Openings

51 - 200 employees

₿ Crypto

☁️ SaaS

💳 Fintech

Crypto • SaaS • Fintech

The Vault is an institutional digital-asset infrastructure provider offering custody, wallets, treasury operations, governance and compliance capabilities as a single platform, delivered as SaaS or fully on-premise. It combines MPC and TEE security, role-based controls, transaction governance, API integrations and a regulated co-signer model so institutions can operate across custodial and non-custodial environments with structured control and compliance. The Vault targets financial institutions, asset managers, family offices, corporate treasuries, payment providers and other high-volume digital-asset businesses, and operates under regulated legal entities (e. g. , CySEC CASP for the EEA and VQF/Swiss oversight) and third-party audits like SOC 2 and ISO processes.

📋 Description

• Design, write, and ship critical custody-platform components including policy engine, signing orchestration, key lifecycle workflows, recovery flows, approvals, audit trails, and multi-tenant wallet and account services. • Lead non-trivial cross-cutting initiatives through written RFCs, design reviews, and code. • Build high-load, multi-tenant SaaS systems with tenant isolation, quotas, rate limits, backpressure, concurrency control, and predictable latency under spikes. • Implement distributed-systems reliability patterns including idempotency, retries, outbox/inbox, event-driven workflows, sagas, state machines, replay, and graceful degradation. • Apply security-by-design practices including least privilege, secret handling, mTLS/JWT, tamper-evident logs, and audit-ready data models for SOC 2, ISO 27001, and DORA scope. • Improve performance and data systems through profiling, load testing, benchmarking, contention analysis, GC tuning, relational modelling, migrations, and indexing. • Use Claude Code, Cursor, and Codex for production development and contribute to AI engineering practices. • Set patterns and shared libraries for owned services; raise engineering standards through code review and example. • Own features end-to-end from RFCs and code through tests, observability, rollout, and on-call. • Mentor senior engineers through reviews and written designs.

🎯 Requirements

• Strong CS fundamentals — reason from first principles about concurrency, distributed systems, consistency models, networking, and OS behaviour; understand locks and channels beyond the API level. • Ownership of non-trivial production systems end-to-end: design, ship, measure, improve, and on-call. • 10+ years backend engineering experience, including 3+ years operating at Staff level or equivalent senior IC scope. • Strong production experience in a modern systems language: Go, Rust, Java, C++, or comparable. • Hands-on Go experience, or genuine readiness to ramp on Go in the first month. • Track record of Staff-level technical leadership through code, RFCs, and influence without formal authority. • Proven track record building high-load, multi-tenant SaaS in production, including HA, incident response, and SLOs. • Hands-on experience with gRPC/HTTP, queues/streams, caching, relational databases, and Kafka/NATS or equivalent. • Strong unit, integration, and contract testing discipline; testability-first design and deterministic CI. • Strong observability habits: structured logging, metrics, tracing, and end-to-end production debugging. • REQUIRED: production-grade use of modern AI coding tools such as Claude Code, Cursor, Codex, or comparable. • Ability to critically review AI-generated code and avoid shipping code not understood by the candidate.

🏖️ Benefits

• A Staff IC role with real technical leadership — no people management, no sprint mechanics gauntlet, no architecture-by-committee. • An AI-forward engineering culture with budget and autonomy for the tooling, models, and agents you need. • Direct peers in cryptography research, security architecture, product, and delivery — you're not the only senior voice in the room. • Fully remote, any time zone with reasonable overlap with EU/CIS hours. • Competitive comp at the Staff engineer band; equity participation; full benefits. • A product approaching Series A with paying institutional customers and a published cryptographic research line

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