Elixir Backend Engineer — Real-Time Robotics Orchestration

Wonder; Boston (MA); Hybrid; USD 140,000 - 151,000; Full time

Benefits offered by this job

Equity

401(k)

Medical insurance

Dental insurance

Vision insurance

Paid time off

Parental leave

Disability coverage

Discounted meals

Job summary

Wonder’s Infinite Kitchen backend software engineer role sits on the backend team, focusing on order lifecycle orchestration and real-time communication with on-premise robotics. You’ll work primarily with Elixir and Phoenix to bridge cloud and hardware across a distributed system.

You’ll collaborate with frontend, robotics, and QA engineers, own reliability, and participate in on-call rotations. Boston-based hybrid office with 3 days in person is offered.

Qualifications

• 2+ years of professional software development experience.
• Proficiency in Elixir and the Phoenix framework (or significant experience in other functional languages with a desire to master Elixir).
• Experience with PostgreSQL and database design.
• Strong understanding of real-time communication (WebSockets, Phoenix Channels) and event-driven architecture.
• Familiarity with building and consuming RESTful and/or GraphQL APIs.
• A pragmatic approach to problem-solving and a passion for building reliable, real-world systems.

Responsibilities

• Orchestrate the Kitchen: Develop the Elixir applications that manage order processing, store pacing algorithms, and real-time event handling.
• Produce High Quality Software: We are proud of the phenomenal uptime we have on our Infinite Kitchens. The ideal candidate for this role will champion reliability on the Infinite Kitchen product line.
• Bridge Cloud and Hardware: Build and maintain robust APIs and WebSocket protocols to communicate between cloud event streams and on-site Python-based robotics applications.
• Data Integrity & Performance: Manage and optimize Postgres databases to ensure every order is tracked accurately and processed with minimal latency.
• Feature Innovation: Design and implement complex business logic, including order prioritization, B2B features, and store-level resource management.
• Operational Excellence: Participate in the on-call rotation, a standard responsibility for all Infinite Kitchen engineering roles.

Skills

Elixir

Phoenix framework

PostgreSQL

WebSockets

REST/GraphQL APIs

Real-time systems

Tools

Distributed systems

Job description

Wonder’s Infinite Kitchen backend software engineer role sits on the backend team, focusing on order lifecycle orchestration and real-time communication with on-premise robotics. You’ll work primarily with Elixir and Phoenix to bridge cloud and hardware across a distributed system.

You’ll collaborate with frontend, robotics, and QA engineers, own reliability, and participate in on-call rotations. Boston-based hybrid office with 3 days in person is offered.