Backend Engineer

Backend Engineer Build the platform giving companies real control over their non-financial information. Full ownership, zero corporate bullshit. Impact that actually matters. Join us! 📋 Job title: Backend Engineer 👥 Team: Product 📍 Location: Hybrid work model from Madrid, Spain 🚀 ABOUT US In 10 years , all companies will operate a non-financial system . As we see it, it’s either Dcycle or bust . Sustainability should not be a cosmetic exercise. 🍃 Dcycle is the startup born to make that happen. Amidst the regulatory, financial, and technical maze that has attempted to equate sustainability with Non-Financial Statements , the industry has made access to information more complex. When faced with a black box, the keyholder becomes indispensable. In this context, the only way to elevate sustainability to the level it deserves is by adding transparency and eliminating all the bullshit . At Dcycle , we are determined to fulfill a mission: giving companies control over sustainability . And we are building an amazing team to make it happen. 💡 What You’ll Do As a Backend Engineer , you will: Design and implement scalable, secure, and maintainable backend services with high-quality code. Build robust solutions using Python (2-4 years of experience), with a strong focus on best practices and clean architecture . Develop microservice solutions using RESTful APIs and event-driven systems (e.g., gRPC, Kafka, SQS), ensuring alignment with product requirements and technical excellence. Contribute to CI/CD pipelines (GitHub Actions, AWS CodePipeline) to guarantee reliable deployments and efficient development workflows. Work with AWS cloud-native infrastructure , leveraging services like EC2, ECS, Lambda, RDS, DynamoDB to deliver scalable products. Apply infrastructure-as-code principles using CloudFormation and CDK to maintain consistency and security across environments. Implement system design patterns, including domain-driven design, CQRS , and event sourcing , where they create clear value. Collaborate cross-functionally with DevOps, Data, Design , and frontend teams to deliver high-impact features and improvements. Use AI and Claude as daily work tools : for debugging, documentation, preparing new features, understanding legacy code, exploring solutions, etc. We’re looking for someone who sees this as a competitive advantage, not a threat. Drive technical excellence , performance , and reliability in everything you build, contributing to a culture of continuous improvement . Support and learn from team members while taking full ownership of your deliverables. 🤖 How We Work with AI At Dcycle, Claude and other AI tools are already an integral part of our workflow . This isn’t the future—it’s the present: We use Claude for real-time debugging , identifying issues faster and understanding complex system behaviors. We document with AI : we generate and maintain up-to-date technical documentation, reducing friction. We prepare new features : we explore architectures, discuss trade-offs, and prototype faster. We understand code : onboarding to new parts of the codebase, refactoring, and impact analysis are accelerated with AI as a copilot. We’re looking for profiles who: Have genuine curiosity about how AI can amplify their work, not replace it. Want to go deeper with these tools , experiment, and share learnings with the team. Combine classic technical rigor (testing, architecture, fundamentals) with openness to new ways of doing things . You don’t need to be an AI expert, but you do need the desire to actively incorporate it into your toolkit and evolve with it. 🌐 Tech Stack & Responsibilities Core Backend & DevOps Python (intermediate-advanced level) REST/gRPC APIs & messaging queues Testing frameworks (pytest, unittest) with TDD/BDD methodologies CI/CD with GitHub Actions, CodePipeline, containerization via Docker , ECS , Fargate , EKS Debugging and performance optimization in staging and production AWS Cloud Architecture : EC2 , ECS , Lambda , API Gateway , Route 53 , ELB Databases : PostgreSQL , RDS , DynamoDB , Aurora Event-driven design using SQS , SNS , Step Functions , EventBridge Infrastructure as Code : CDK , CloudFormation Security : IAM , KMS , encryption , least privilege , secret management Monitoring & Compliance : CloudWatch , X-Ray , AWS Config , ISO 27001 understanding Software Architecture & System Design Highly available , distributed system design Domain-driven design , service boundaries Trade-off analysis and cost-aware architectural decisions Data & API Strategy SQL/NoSQL schema design, indexing, migrations ( Alembic ) API lifecycle : versioning, rate limiting, observability Idempotency, consistency , and secure access patterns Ownership & Collaboration End-to-end ownership of backend projects Participate in technical reviews and knowledge sharing Promote engineering best practices and documentation ⭐ Who You Are Strong problem-solver with a total ownership mentality Autonomous, curious, and impact-driven : you don’t wait to be told what to do—you identify problems and propose solutions You have 2-4 years of backend experience , but act with the autonomy of someone with more mileage Solid communication skills , written and verbal Passionate about clean, testable, and scalable code Curious about AI and new tools : you see Claude and similar tools as productivity multipliers You want to learn and experiment with modern approaches to product development Collaborative and proactive with a great sense of humor What we’re NOT looking for: Profiles who think “this is how it’s always been done” People who see AI as a threat or distraction Engineers who just want to execute tickets without questioning or proposing What we ARE looking for: Structured and technically solid mindset, but open to new ways of working Someone who combines classic fundamentals with modern product thinking Brutal agency : ability to make decisions, unblock problems, and move fast without sacrificing quality 💸 What We Offer 23 vacation days 7 days of team-building per year Cobee card for added flexibility Subsidized training for continuous development Competitive gross annual salary depending on experience Based in Madrid, Spain 3 onsite + 2 remote days as a base +1 remote day for moms and dads with 0–6 yo children +1 remote day if commuting takes longer than 1h (Google Maps base) 1-1s will be mandatory onsite General All Hands will be mandatory onsite Full remote (optional) from the end of the summer team building up to the warm-up week Full remote (optional) from Dec 23rd to Jan 6th (both included) HOW WILL YOU DO IT? At Dcycle , we take inspiration from models like La Masía at FC Barcelona , one of the most prestigious and recognized football academies in the world. La Masía is much more than just a training facility; it is a true talent factory that has shaped some of the greatest legends in football. Its success lies in a holistic approach that combines a clear playing philosophy, an innovative methodology, and a long-term commitment to the technical , tactical , and personal development of its players. At Dcycle , we embrace a long-term vision and a comprehensive development philosophy. We are not just looking for immediate results, but for people with the potential and determination to make a difference. We prioritize professionals who share our mission: giving companies control over sustainability . We don’t just evaluate technical skills or past achievements; we focus on individuals with curiosity , critical thinking , and a commitment to continuous learning. We want people who don’t just complete their tasks but challenge ideas, bring new perspectives, and drive change. The people who belong in Dcycle are: We believe in agency. Agency is significantly more powerful and significantly more scarce than intelligence. We fix what’s broken → with ownership , autonomy , and responsibility . We take humor seriously → spending time together is a pleasure. Intelligent → we learn quickly, are versatile, and technically brilliant at something. The people who belong in Dcycle act: With confidence → whether acting autonomously or seeking opinions and getting involved; we value feedback as the only way to grow. Guided by metrics → we rely on key metrics to evaluate our efforts. Close to the customer → we maintain constant, iterative conversations with our customers and prospects to learn from our experiments (both about the problems and the solutions we create). By taking risks → we understand that failure is the price of learning. Department Tech Locations Madrid HQ Remote status Hybrid