> Markdown version of [/jobs/ext/1368470-backend-software-engineer](https://www.wearedevelopers.com/jobs/ext/1368470-backend-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Software Engineer - **Company:** Exoticca - **Location:** Barcelona, Spain (Remote available) - **Salary:** €70,000.0 - €90,000.0 - **Contract:** Permanent contract - **Skills:** PHP (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, C Sharp (Programming Language), Software Quality, Software Debugging, Distributed Systems, Github, DataOps, Systems Integration, Data Logging, ReactJS, Delivery Pipeline, Large Language Models, Backend, Git, Event Driven Architecture, Data Analytics, React Native, Front End Software Development, Software Coding, Restful APIs, Domain Driven Design, Software Version Control - **Published:** July 21, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role + Strong problem-solving mindset - you enjoy ambiguous problems and figuring out the best path forward. + Highly effective use of AI in daily work (coding, debugging, designing, analyzing, automating). + Product-oriented thinking: you care about why you're building something, not just how. + Comfort working across multiple technologies and learning new ones as needed. + Solid knowledge of RESTful API design, development, and integration best practices. + Experience working with event-driven architectures (EDA) and message-based communication between services. + Familiarity with Domain-Driven Design (DDD) and clean architecture principles. + Working knowledge of CI/CD pipelines and version control best practices using Git (GitHub Actions or similar). + Strong emphasis on testing (unit, integration) and commitment to code quality, scalability, and maintainability. + Familiarity with observability practices - including logging, monitoring, and tracing - to ensure visibility and reliability across distributed services. + Excellent collaboration and communication skills to work effectively within cross-functional teams. We don't expect you to know everything, but experience in some of the following is important: + Backend: PHP and/or C# (or equivalent experience) + Frontend: React, React Native + APIs, integrations, and system design + AI tools, LLMs, automation workflows + Data-informed decision making + Proven ability to design and integrate RESTful APIs with attention to performance and reliability. + Knowledge of testing practices (unit and integration) and a strong focus on code quality. + Familiarity with observability principles, including logging, monitoring, and tracing in distributed systems. ## Description Product Configuration & Scalability + Build and evolve the systems that enable travel specialists to design, configure, and launch complex travel products at scale. + Transform destinations, itineraries, flights, hotels and services into structured, reliable, and sellable products. + Ensure flexibility and accuracy in product configuration while maintaining operational efficiency and long-term scalability. Revenue, Pricing & Financial Integrity + Develop and improve capabilities that support smart departures, pricing strategies, booking breakdowns, payments, refunds, and wallet flows. + Safeguard financial correctness across the full product lifecycle, from configuration to checkout and post-booking operations. + Design systems that directly impact revenue performance and margin optimization. Platform & Operational Excellence + Build internal platforms and tools that empower Product, Finance, and Operations teams to work autonomously and efficiently. + Increase reliability and reduce manual intervention in calendar management, flight configuration, and payment-related processes. + Continuously improve system robustness, reducing operational risk and scaling complexity without increasing overhead. Product & Data-Oriented Engineering + Work closely with the whole team to refine problems before writing code. + Use data to validate assumptions, measure business impact, and continuously improve solutions. + Actively participate in shaping product decisions, not just implementing tickets. ## Related Videos - [Your next 10x engineer isn't in your city. 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