Senior Backend Developer (Vice President)

Galaxy; Greater London; Hybrid; GBP 90,000 - 150,000; Full time

Benefits offered by this job

Equity exposure

401(k) plan

Flexible time off + parental leave

Health benefits

Perks at work

Employee assistance program

Job summary

Galaxy is seeking a senior backend engineer to design and build scalable systems powering blockchain infrastructure and staking products. You will own end-to-end architecture, APIs, data pipelines, and observability, collaborating across Ethereum execution and consensus layers.

The role emphasizes architecture, design practices, and engineering culture, with opportunities to mentor and shape the team’s evolution.

Qualifications

• 7+ years of professional software engineering experience.
• Strong testing practices for complex and stateful systems.
• Experience with blockchain systems, preferably Ethereum.
• Hands-on experience with Ethereum nodes or validator/staking infra.
• Experience with cloud-native infrastructure: AWS, Kubernetes, Helm, GitOps.

Responsibilities

• Build and own backend systems.
• Design and build APIs, Ethereum data pipelines and indexers, staking and validator infrastructure integrations, and monitoring tooling.
• Own system design end-to-end: architecture, implementation, testing, deployment and observability.
• Work across the Ethereum stack, integrating with execution and consensus layers.
• Mentor engineers through code review and design feedback.
• Contribute to engineering culture and improve team practices.

Skills

Backend Go

Distributed systems

Blockchain Ethereum

Cloud infrastructure

Rust

Solidity

Open source

Remote teamwork

Testing practices

Node operation

Tools

Kubernetes

GitOps

AWS

Helm

Job description

• You’ll design and build backend systems powering blockchain infrastructure and staking products across Galaxy — spanning Ethereum-based systems, staking infrastructure (native and liquid), and blockchain data systems and APIs. Liquid Collective is one of several key initiatives you’ll contribute to
• This is a hands‑on role with significant ownership and influence. You’ll play a key part in shaping architecture, development practices, and engineering culture — not just building features, but raising the bar on how the team works
• You’ll own systems end‑to‑end, from architecture through to observability, and you’ll operate in a spec‑first development environment that increasingly leverages AI‑assisted workflows
• Typical time allocation: roughly 60% building systems and features, 20% code review and mentorship, 20% design, architecture, and product collaboration
• Build and own backend systems
• Design and build APIs, services, Ethereum data pipelines and indexers, staking and validator infrastructure integrations, and monitoring and operational tooling
• Own system design end‑to‑end: architecture, implementation, testing, deployment, and observability
• Work across the Ethereum stack, integrating with both execution layer and consensus layer clients
• Contribute to Liquid Collective alongside other staking and blockchain infrastructure projects across Galaxy
• Define and uphold engineering standards
• Set and maintain the bar on API design, testing strategies for distributed systems, reliability and fault tolerance, and security and key management practices
• Operate in a spec‑first development environment — translate product and protocol requirements into clear technical specs before building
• Leverage AI‑assisted development workflows (e.g. Claude Code) and work with emerging paradigms like MCP (Model Context Protocol) and agent‑based tooling
• Collaborate and contribute to engineering culture
• Work cross‑functionally with protocol, product, and infrastructure teams
• Mentor engineers through code review, design feedback, and raising the overall quality of what the team ships
• Contribute to how the team evolves its practices — not just executing within the current system, but improving it
• Embrace and champion the thoughtful adoption of AI to improve team performance and business outcomes
• Leverage AI tools (e.g., generative AI, automation platforms, data copilots) to improve productivity, decision‑making, and output quality in your day‑to‑day work

Benefits

• Equity Exposure for All Employees - Through broad and meaningful equity participation, we desire to have our employees work collaboratively and act as long‑term shareholders
• 401(k) Contributions- Galaxy offers a 401(k) retirement savings plan with a 3% employer contribution and access to both Traditional and Roth options (US-only)
• Flexible Time Off and Parental Leave - You decide how many paid vacation and personal days off you want. Paid Parental Leave is available to give new parents the opportunity to care for and bond with their new child
• Full Paid Health Benefits - Company‑paid health insurance for employees, partners, and other dependents, effective as of your start date
• Perks at Work - Galaxy provides various crypto education opportunities, a free Peloton membership with insurance, after‑hours car service reimbursements, and more
• Employee Assistance Program - Confidential, 24/7 access to mental healthcare with a licensed therapist or psychiatrist. Benefits include 8 free video sessions per person, per year, for employees and any of their dependents age 18+

Requirements

• Strong testing practices for complex and stateful systems
• 7+ years of professional software engineering experience
• High agency, low ego — you own your work end‑to‑end and hold yourself accountable for quality
• Experience working in remote, asynchronous teams
• Strong experience building backend systems in Golang
• Deep understanding of distributed systems.
• Experience working with blockchain systems, preferably Ethereum — including familiarity with execution vs consensus layers, node operation, and data flow
• Experience with cloud‑native infrastructure: AWS, Kubernetes, Helm, GitOps (e.g. Flux)
• Hands‑on experience with Ethereum nodes (execution and/or consensus clients) or validator and staking infrastructure
• Experience building blockchain indexers, data pipelines, dApps, or smart contracts (Solidity)
• Understanding of proof‑of‑stake mechanisms
• Familiarity with AI‑assisted development workflows: spec‑driven development, code generation tools, MCP, or agent‑based paradigms
• Contributions to open‑source projects
• Experience with Rust