Portfolio Careers

Opportunities in the Archetype portfolio

Senior Back End Engineer - API

Obol Technologies

Obol Technologies

Software Engineering
Berlin, Germany
Posted on Monday, September 4, 2023
Who Are We?
Obol Labs is a remote-first research and software development team focused on Proof of Stake infrastructure for public blockchain networks. Specific topics of focus are Internet Bonds, Distributed Validator Technology, and Multi-Operator Validation. The core team includes 35 members spread across +14 countries.
The core team is building the Obol Network, a protocol to foster trust-minimized staking through multi-operator validation. This will enable low-trust access to Ethereum staking yield, which can be used as a core building block in various Web3 products.
The Network
The network can be best visualized as a work layer that sits directly on top of the base layer consensus. This work layer is designed to provide the base layer with more resiliency and decentralization as it scales. In this chapter of Ethereum, we will move on to the next great scaling challenge, which is stake centralization. Layers like Obol are critical to the long-term viability and resiliency of public networks, especially networks like Ethereum.
Obol as a layer is focused on scaling main chain staking by providing permissionless access to Distributed Validators. The network utilizes a middleware implementation of Distributed Validator Technology (DVT), to enable the operation of distributed validator clusters that can preserve validators' current client and remote signing configurations.
Similar to how roll-up technology laid the foundation for L2 scaling implementations, we believe DVT will do the same for scaling the consensus layer while preserving decentralization. Staking infrastructure is entering its protocol phase of evolution, which must include trust-minimized staking networks that can be plugged into at scale. We believe DVT will evolve into a widely used primitive and will ensure the security, resiliency, and decentralization of public networks.
The Obol Network develops and maintains three core public goods that will eventually work together through circular economics:
The DV Launchpad, a User Interface for bootstrapping and managing Distributed Validators
Charon, a Golang based middleware client that enables validators to run in a fault-tolerant, distributed manner.
Obol Splits, a set of solidity contracts for the formation of Distributed Validators tailored to different use cases such as DeFi, Liquid Staking, and Fractionalized Deposits
Sustainable Public Goods
Obol is inspired by previous work on Ethereum public goods and experimenting with circular economics. We believe that to unlock innovation in staking use cases, a credibly neutral layer must exist for innovation to flow and evolve vertically. Without this layer, highly available uptime will continue to be a moat.
The Obol Network will become an open, community-governed, self-sustaining project over the coming months and years. Together we will incentivize, build, and maintain distributed validator technology that makes public networks a more secure and resilient foundation to build on top of.
As a Senior Back End Engineer, this position focuses on the Obol API and the DV launchpad and their iterations. The Launchpad is the primary interface for interacting with the Obol Network, and the infrastructure to back the interface will need to mature and scale as Obol grows into its public mainnet phase.
This role aims to grow the Obol backend and chain-interfacing infrastructure into something that can be uniswap-scale.
Expected start date April/May.


  • Invest in the launchpad backend infrastructure to make it scalable, robust, and secure against DDoS, spam, and other attacks.
  • Work on cost-effective scalable access to on-chain information in the launchpad, by hosting RPC nodes or selecting a cost-effective third-party provider. This is for cluster status pages.
  • Work on cost-effective, scalable access to historical performance data. The most likely solution here is beaconcha.in or rated.network data integration, but ultimately could get as aspirational as https://uniswap.info/
  • Work with the Launchpad front-end team to design and build rich web3 experiences using wallet-based authentication. (Sign in with Ethereum, a variation on our existing EIP712 signing-based auth)
  • Develop Web2 API authn and authz using OAuth 2.0 flows or OpenID Connect.
  • Further the development of the Obol API SDK
  • Specific focus is to be paid to data retrieval after wallet authentication (e.g. how do you present all DV clusters a user is a participant in by using the chain, an indexer, and a cache, as the source of truth instead of an entirely off-chain source of truth that can be tricky to keep in sync).

Requirements (Mandatory)

  • Tech stack required: Go, Node.Js , Typescript
  • Previous Web3 experience
  • Experience working in a distributed remote team

Nice to have

  • Experience in GoLang
  • Proven contributions to Open Source repo
  • Strong knowledge of core Golang paradigms and concepts.
  • Experience with Goroutines and channel patterns
  • Timezone between UTC-2 to UTC+3


  • Fully Remote Working and flexible hours
  • Annual global offsite
  • Unlimited Paid Time off
  • Budget for Education/Training
  • Budget for equipment
Join our talented engineering team!
Thank you for your interest. Looking forward to building amazing stuff together!