Mid-Senior Backend Engineer

• Be part of a backend team that is composed of Software Developers and a Product Manager. Working together in the full process of agile software development.
• Collaborate closely with various stakeholders, including the infrastructure team, customer success and other development teams.
• 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.
• 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.
• 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).
• Be accountable and proficient with the code that the team writes, keeping it clean and simple.
• 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.
• Work with our ., A 2-hour technical session with two members of our development team, divided into two parts. The first 30 minutes will focus on the candidate's technical background, while the second part (90 minutes) involves a live programming exercise. The candidate should do it using Java. This test simulates a 'pair-programming' session, with our team providing guidance and assistance throughout the exercise. Step 3️⃣ We will either extend a job offer or provide feedback if we decide not to hire you.

The engineering department of 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 prioritise 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 about 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., * 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 (, 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 (, lambda functions, buckets, managed services, etc.).

• Experience in profiling (memory, cpu, I/O) and service metrics using monitoring tools.

• Knowledge of the Energy sector.

• Flexible working hours and possibility of early quit Friday.

• Hybrid work model.

• Office in the city centre of Barcelona.

• An exciting and positive work environment where you are valued.

• A friendly and talented group with 10+ different nationalities.

• Flexible compensation scheme: kindergarten, transportation and food with UP Spain.

• 23 holiday days per year (flexible policy).

• Up to 5 additional holidays based on tenure.

• 1 additional birthday day off.

• Company-sponsored courses and attendance to events.

• Discounted private health insurance and gym memberships.

• Regular team events.

• Referral bonus for new hirings. Team values

• Be human: authentic, open, caring and transparent.

• Be an expert: share your knowledge in a simple way.

• Stay positive: be passionate and optimistic.

• Be humble: self-aware and open to learning.

• Be sustainable: care about the planet and the ecological footprint. Hiring Process At Spacewell Energy, we celebrate diversity and difference, and we are strongly committed to building an inclusive workplace for all our employees. We welcome and encourage people of all backgrounds to apply. Read more about our . Step 1️⃣

is a leading provider of workplace management solutions, specialising in optimising the utilisation and performance of commercial spaces, as well as providing to help thousands of facility managers, energy auditors and building owners around the world to become more sustainable. Our innovative technologies and services empower organisations to create smarter, more efficient, and engaging workplaces, enhancing productivity and well-being. At Spacewell, we are full of contagious energy, hard work, and passion for what we do. We are fully committed to encouraging an environment where everyone is heard and feels a sense of belonging. We are proud to have a multicultural team that acknowledges a variety of backgrounds, skills and perspectives.