The English-language job board for Spain

Staff Backend Engineer, Aave App Vaults

Remote, EU·Full-time·Added 27 days ago

Aave Labs

3 open roles

Apply

Overview

Job details

Full-time hours
Per the ad.
Fully remote
Only from certain places, per the ad: “Remote, EU”

Requirements

Have the right to work in Spain
Aave Labs doesn't mention sponsorship in the ad.
Work in English
English is required, per the ad.
Have 6+ years of experience
Staff-level role.

Requirements

What we're looking for

6+ years of backend engineering experience, including ownership of complex production systems
Strong backend programming skills. Production experience with Rust is highly desirable, but we'll also consider strong systems experience in Go, C++, Zig, or Java
Experience building distributed, event-driven, or data-intensive systems with clear reliability and performance requirements
Strong knowledge of API/GraphQL design, PostgreSQL or another relational database, caching, queues, and observability
Experience with blockchain systems or other financial infrastructure involving real capital, particularly transaction signing, private-key or key-management flows, wallet infrastructure, and onchain transaction lifecycles, is highly desirable
Strong judgement around threat modelling, sensitive data, permissions, and the operational risks of systems handling financial value

Nice to have

Experience reading smart contracts and integrating with EVM-compatible networks, smart accounts, account abstraction, bridges, vaults, or DeFi protocols
Experience designing constraint, optimization, solver, or allocation systems
Experience building consumer fintech, savings, wallet, exchange, or payments products at meaningful scale
Experience with cross-chain indexing, large-scale data ingestion, Kafka, ClickHouse, or similar infrastructure

Haven't quite met all the criteria? Let's not miss out on the chance to speak. Whilst you might not meet every single requirement, you might bring other, more exciting skills to the companies!

The role

We're hiring a Staff Backend Engineer to build the backend infrastructure behind Aave App, a consumer savings app that makes onchain financial products simple, secure, and intuitive, and the vault products that power it.

The role focuses on the systems between blockchain protocols and the consumer experiences built around them. This includes account and wallet services, transaction orchestration, vault management, monitoring and rebalancing, partner vault integrations, high-reliability blockchain indexing, balances and yield data, funding and withdrawal flows, notifications, and performant, well-documented APIs for mobile and web clients.

You'll own a broad technical area with high ownership and turn ambiguous product goals into reliable production systems. Correctness, security, and operability are critical: the services you build will support customer transactions, sensitive account flows, user funds, and financial data across both onchain and offchain infrastructure.

You'll also work closely with Quant Engineers, who own the financial models, assumptions, and calibration behind vault allocation and rebalancing, and with smart contract engineers, who own onchain integration and enforcement. Backend owns the production systems, data pipelines, and services that run those models.

What you'll do

Design, build, and operate backend services for Aave App across onboarding, funding, savings, vaults, withdrawals, portfolio data, and customer communications
Build vault management, monitoring, and rebalancing systems, including partner vault integrations, and work with Quant Engineers to turn reviewed allocation models into reliable production services
Build transaction-orchestration and high-throughput indexing services that safely prepare, submit, monitor, and reconcile onchain activity across its full lifecycle
Integrate with smart contracts, RPC providers, account infrastructure, payment partners, and other external services, designing for degraded dependencies and partial failure
Lead technical reviews for high-value systems and improve testing, observability, alerting, incident response, and deployment practices across the backend codebase
Work closely with mobile, web, product, design, protocol, smart contract, quant, security, data, and operations teams to deliver coherent consumer experiences
Raise the engineering standard through hands-on delivery, pragmatic architecture, clear documentation, and review that helps other engineers grow

About Aave Labs

Aave Labs is a technology company that builds blockchain-based financial software, hiring for roles such as Staff Smart Contract Engineer, Protocol Security Researcher, and Staff Backend Engineer for its 'Aave App Vaults' and 'Push' products. Its open positions span engineering, legal, risk, and business development, with a mix of full-time and service-provider (contractor) engagements.

Aave Labs does not list any office in Spain on its careers page; its physical hubs are London, Dublin, and New York, alongside remote locations across Europe, Asia, Switzerland, the UK, and the US. For international professionals, the most relevant entry points are its fully remote EU roles (e.g., Staff Backend Engineer, Aave App Vaults; Staff Smart Contract Engineer) and hybrid roles in London and Dublin.

Good to know if you are moving

Aave Labs offers fully remote EU positions, including Staff Backend Engineer, Aave App Vaults (Remote, EU) and Staff Smart Contract Engineer (Remote, EU / Remote, Switzerland).
Its physical office hubs are London, Dublin, and New York; no Spanish office locations are listed on its careers page.
Some roles are offered as 'Service Provider' engagements rather than full-time employment (e.g., Staff Smart Contract Engineer), so contract arrangements may be part of their hiring mix.
The company hires across engineering, legal, risk, and business development teams, with hybrid roles requiring presence in London, Dublin, or New York.

In their own words

About the company & team

Aave Labs began with a simple question: how do we make financial services like borrowing, saving, and earning more accessible globally?

We built the Aave Protocol, now the world's largest and most trusted onchain lending market, connecting decentralized finance with individuals, traditional finance, and fintech.

Today, we build trusted, high-quality products that expand access to lending, credit, and savings globally

We build trusted products that help people access and discover economic opportunities.

We hold a high bar for quality and craftsmanship. No detail is too small. Trust depends on it.

We're a global team building products people can actually use, turning complex technology into something simple and reliable.

We stay aligned, move quickly, and think long term, while keeping teams lean and focused on impact.

Additional information

Aave Labs celebrates diversity and views each and every team member as a separate individual with their own unique identity. No matter your race, religion, gender, ethnicity, age, disability, sexual orientation or even the wallet you use, we welcome you at Aave Labs. As an equal opportunities employer, we take accountability and believe in everyone's potential to build, create and inspire changes. With a mission to build a diverse workforce, we are proud to foster a working environment in which everyone can feel safe and valued for who they are.

All open roles at Aave Labs