Mid-Senior Backend Engineer – XV-638

The engineering department of Spacewell Energy is currently looking for a mid-senior backend engineer to join the core team. We are looking for engineers who embrace software craftsmanship and have a background in either Java or Kotlin. We prioritize the use of Agile methodologies and XP practices such as TDD, pairing, and CI/CD as a basis for delivering high-quality code frequently, while taking care of the business domain (DDD). We are open to both onsite and remote candidates residing in Spain, have a valid work permit for Spain, and would enjoy meeting the team during the year in our Barcelona office.

You will:

1. Be part of a backend team composed of Software Developers and a Product Manager.
2. Work together in the full process of agile software development.
3. Collaborate closely with various stakeholders, including the infrastructure team, customer success, and other development teams.
4. Ensure that the platform runs smoothly managing millions of measurements every day, by taking into account security, performance, and concurrency in the features you work on.
5. Be involved in a deep refactor of some of our core components: rethinking models, extracting monolith functionalities into independent services, performance and scalability improving, query optimizations.
6. Deploy your changes in production using CI/CD pipelines: own the whole lifecycle from the pull request to production (testing, software quality metrics, QA & observability in production).
7. Be accountable and proficient with the code that the team writes, keeping it clean and simple.
8. One day per sprint of two weeks is booked for free choices. The goal of free choices is to try to innovate with new technologies/tools/approaches to improve our products or methodologies.
9. Work with our technical stack.

Requirements:

• Team player: you have good social skills and you enjoy working with people to solve problems together.
• Product mindset: you believe that understanding the pains and problems of the customer/user is crucial to build and deliver the best solution.
• Pragmatic: understand the urgency and importance of the issue that you work on, balancing quality, performance, and time-to-market.
• Fluent in JVM languages (Java 8+, Kotlin).
• Experience using Docker Containers and dockerizing micro-services.
• Experience using relational and/or non-relational databases (e.g., PostgreSQL, MongoDB, BigQuery).
• Knowledge of the SOLID principles and Clean Architecture.
• Familiarity with the testing pyramid.
• Fluent in English.

Nice to have:

• Experience in DDD and clean architecture.
• Experience in microservices patterns.
• Knowledge of programming languages such as Python and/or JavaScript.
• Knowledge of asynchronous, reactive programming principles and the functional programming paradigm.
• Experience using Cloud Native Infrastructure (e.g., lambda functions, buckets, managed services, etc.).
• Experience in profiling (memory, CPU, I/O) and service metrics using monitoring tools.
• Knowledge of the Energy sector.

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