Software Engineer

Overview

At Octopus Energy Trading, we’re building an innovative approach to trading to accelerate the transition to a Net Zero world. We are building technology to optimise from domestic EV charging to grid-scale batteries to meet energy flexibility needs. We are seeking a software engineer to join the core engineering team to own the developer experience, designing frameworks and tooling for event-driven microservices and building core microservices reusable by domain teams.

Please note: this role requires a minimum of 2-3 days a week from our London office.

Responsibilities

• Build and maintain the platform underpinning our low-latency event-driven microservices architecture, ensuring robustness, performance, and high availability (24/7 operations).
• Build and maintain core microservices reusable by domain teams; support them to build their own.
• Develop intuitive and well-tested tooling that frees domain teams from implementation details, enabling focus on their domain expertise.
• Partner with domain teams to scope and prioritise opportunities and deliver solutions that improve their workflows.
• Lead by example on software engineering best practices, improving documentation, knowledge sharing, and AI adoption.

Qualifications

• Advanced-level Python.
• Strong commitment to clean code and software engineering best practices.
• Enthusiasm for enabling others through a strong platform, tooling, and developer experience.
• Experience managing production systems on Kubernetes or similar, with observability tools (Grafana, Datadog, Sentry).
• Knowledge in several areas such as: Asynchronous Python, Microservices, REST APIs, Event-driven architectures, Streaming technologies (Redis Streams, Kafka, RabbitMQ), WebSockets, Kubernetes, autonomy and pragmatism, team player mindset and ability to adapt in a startup environment.

Desirable/Bonus

• Experience with continuous intraday power trading in the UK or EU.
• Experience developing low-latency systems where correctness is critical.
• Frontend development using TypeScript (e.g., Angular or React).
• High-performance languages like Go and Rust.
• Analytics tooling like Databricks, dbt, Streamlit, and Lightdash.

Technology stack (illustrative)

• Python
• Redis as database; S3 for storage
• FastStream, FastAPI, Airflow
• Docker and Kubernetes
• GitHub, CircleCI
• AWS with Terraform/Spacelift
• Linear, Notion

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