Senior Fullstack Engineer (, React)
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Job Summary
About Symbiotic
Symbiotic is the universal staking protocol enabling protocols to streamline decentralizing their stack. Symbiotic enables creating fully custom or templated staking integrations leveraging any asset and features such as slashing redistribution (liquid) restaking as well as native staking. Over 40 teams including Spark Hyperlane and Avail are building on Symbiotics universal staking primitives secured by over $1bn in TVL.
You can find more information about what were building and how were doing it here.
Our People
Were a tight-knit team of experienced individuals at the forefront of crypto infrastructure. Our backgrounds range from security auditing and smart contract development to node operation and were supported by Pantera Capital Paradigm and CyberFund.
Were on the hunt for talented professionals to join our mission and strengthen our awesome team.
As a fullstack engineer at Symbiotic youll take responsibility for all backend services architecture and reliability so the rest of the team can stay focused on new features and growth. Keep reading only if this sounds interesting!
This is a full-time role under a traditional employment agreement; we do not work with contractors.
What Youll Do:
Fully own the entire backend of Symbiotic: architecture services APIs databases performance reliability and observability
Design and build new services from scratch with zero hand-holding
Take complete responsibility for everything you ship: you are the go-to person for any question or issue related to your code
Ruthlessly focus on delivering maximum value; challenge requirements when needed
Write exceptionally clean simple and over-documented code
Jump into React frontend work whenever required (were a small team; speed > strict boundaries)
Proactively propose valuable features and improvements
Collaborate closely with the team accept feedback openly and mentor others when needed
Ensure everything is thoroughly tested and production-ready (monitoring logging error tracking security)
Continuously improve performance scalability and developer experience across the stack
Who you are:
4 years of production experience as a backend or fullstack engineer with deep ownership of services.
Expert in JavaScript and internals (event loop streams memory model async primitives)
Proven track record independently designing and shipping complete backend services end-to-end
Strong production experience with modern frameworks (Fastify Hono Elysia Express NestJS)
Advanced PostgreSQL skills: schema design indexing strategy query optimization transaction handling
Strong React TypeScript frontend background
Docker-native comfortable with CI/CD (GitHub Actions) basic Kubernetes knowledge
Obsessed with clean simple heavily documented code; you write extensive tests and love helping QA with edge-case scenarios
Excellent at algorithms and data structures.
Startup mindset: you jump into frontend infra or anything else needed to move the product forward
Deeply care about business impact and always understand the why behind what you build
Bonus: Web3 experience (EVM RPC providers indexing) or working knowledge of Go/Python
Attention Job Seeker! Job scams are unfortunately common in our industry. A few things to note:
All interviews are conducted on Google Meet; never on Discord Zoom or any other platform.
We will always contact you from an @ email address.
If youre ever in doubt reach out directly to .
Required Experience:
Senior IC
Key Skills
- APIs
- C/C++
- Computer Graphics
- Go
- React
- Redux
- Node.js
- AWS
- Library Services
- Assembly
- GraphQL
- High Voltage
