Senior Backend Engineer

We are hiring on behalf of our client in the high-growth Web3 and DeFi sector who is seeking a Senior Backend Engineer to join its core Platform team. This organization builds and evolves the distributed backend systems that power its primary products and customer-facing solutions.

• 5+ years of professional experience designing and building distributed backend systems.
• Strong foundation in algorithms, data structures, and software design patterns.
• Professional experience with Python 3.
• Proven experience with containerized systems (Docker & Kubernetes), databases (Postgres/SQL, MongoDB, or Cassandra), and cloud environments (AWS).
• Experience with observability tools such as Sentry, Prometheus, and Grafana.
• Clear, proactive communication skills suited for a distributed, async-first team and a strong ownership mindset.
• Hands-on experience with blockchain systems, dApps, or smart contracts is highly preferred.

Bonus Qualifications:

• Knowledge of Golang.
• Prior experience in a high-autonomy startup environment.
• Location within time zones close to Europe (CET/EET).

• System Architecture: Design, build, and maintain scalable distributed backend systems powering core platform and product capabilities.
• End-to-End Ownership: Manage backend services throughout their entire lifecycle, from initial architecture and implementation to monitoring and long-term reliability.
• Product Collaboration: Partner with product and engineering peers to actively shape product decisions and strategy rather than merely executing technical specifications.
• Web3 Integration: Build and evolve platform backend components, including protocol integrations, support for emerging blockchain networks, and reliable interactions with smart contracts.
• Engineering Standards: Ensure high standards of code quality, performance, security, and observability across all services.
• Operational Excellence: Operate effectively in a fast-paced startup environment, balancing development velocity with technical correctness.
• Innovation: Leverage AI-assisted tools to improve development velocity and personal productivity while contributing to technical discussions, reviews, and mentorship within the team.

Location requirement: Remote work within +/- 3 hours from CET (EST / Europe preferred).