Senior Mobile Engineer (Remote, based only in EU)

WorkNomads is seeking a Software R&D Engineer to join our diverse team, working remotely from the EU or from the WorkNomads base in Sofia, Bulgaria. The R&D Development Engineer is responsible not only for delivering technically sound solutions but also for ensuring that all systems meet high standards of security, reliability, and compliance. This includes designing secure APIs, protecting sensitive data across mobile and backend systems, proactively managing vulnerabilities, and embedding security best practices throughout the development lifecycle. In this role, the engineer takes technical ownership of the platform and maintains uniformity within the team. Conduct high-quality code reviews, support other engineers, and document key technical decisions to ensure long-term maintainability and shared understanding. Beyond pure engineering, the candidate should demonstrate strong product and business awareness, translating product goals into scalable and cost-effective technical solutions. They actively balance delivery speed, technical debt, system robustness, and operational cost, discussing trade-offs transparently and aligned with business priorities. Success in this role requires exceptional communication skills, the ability to make informed decisions under uncertainty, and a strong sense of ownership . The engineer will collaborate with product, design, and operations teams, challenge assumptions constructively, and support the engineering organization in delivering sustainable value over time. The tools in your backpack: 3-5 years of experience Python - Backend services, data processing, async programming, FastAPI, Django IOS/Android native app development Flutter/Dart knowledge RESTful API design and implementation Microservices architecture Nginx hand-on experience Databased and Data layers – PostgreSQL/MySQL/ SQLite Containers and deployment strategies and applications (Docker, Kubernetes, CI/CD pipelines) Other nice-to-have tools: AI integration and deployment C/C++ experience MS Azure, Firebase, or any other cloud system NoSQL databases Perks of being one of us: Flexible work setup : work fully remotely from any country in the EU on a freelance/B2B contract, or join our Sofia, Bulgaria office under a local employment contract that offers a comprehensive social welfare package. Autonomy : an environment where your technical vision matters, and you own your work-life balance. Growth : a personalized career development program to fuel your journey; learn from experts, expand your craft, and work across industries. Global vibe : an international, dynamic, remote-first workplace. Connectivity Support : coverage for internet and phone bills (50 EUR gross). Total Rewards : paid time off and competitive remuneration. Community : team get-togethers and networking events are in our DNA! Seamless Living : need a base? Digitally check into a spacious room at our WN LAB Hotel, Bulgaria’s biggest and coolest 4★ co-living hotel. No deposit, with special discounted rates for single apartments starting from 660 EUR/month (utilities & cleaning included!). Be part of something beyond work : culture, values, impact. How to Apply / What Happens Next: 1. Send us your CV by hitting the “Apply” button. 2. You will hear from one of our Global Talent Connectors within 5 business days with the next steps. 3. Meet us on MS Teams and tell us what excites you. 4. Next stage could be a test or a task - we want to see what you DO (not just what you say) 5. Along this journey and depending on the role you are applying for, prepare to meet either our Chief Talent Gaucho, your future leader or our Head Honcho! Want to learn more? Check us out below: https://www.worknomads.com/ Interest piqued? Join us! WorkNomads — A Nation Without a Country We celebrate the right of every human to be themselves and provide opportunities for global talent to shine. Diversity, social equity, and inclusion are at the core of who we are. We create an environment where different voices are respected, heard and empowered in equal measure. We’re breaking down the boundaries by designing a new nomadic economy by enabling people to do what they love and be where they want.