Senior C# .NET Core Engineer 💻

About This OpportunityWe're seeking an experienced Senior .NET Core Engineer to join our high-performing backend team of 6 engineers building a cutting-edge white-label electronic trading platform for the financial markets. Based in Lisbon, this is a hybrid role where you'll spend half your week on-site collaborating with our international team while driving the modernization of our infrastructure toward .NET 8 and microservices architecture.If you're passionate about building scalable, high-performance solutions for European institutional clients and thrive in a collaborative fintech environment, this role is for you.The ChallengeYou'll architect and develop mission-critical microservices powering real-time trading operations across Europe. Working at the intersection of technology excellence and business impact, you'll own the backend's technical evolution while mentoring junior engineers and contributing to our evolving tech strategy.Why this matters: Our platform processes millions of transactions daily for major financial institutions. Your code directly impacts trading accuracy, system reliability, and user experience for professional traders across the continent.Your Responsibilities 🚀Design & develop scalable microservices using .NET 8, collaborating on architectural decisions that shape our platform's futureLead technical analysis within our Agile development cycle—from requirements gathering through code review—ensuring best practices and design patterns are embedded in every featureOwn production support: Partner with our ops team to troubleshoot issues, deploy fixes, optimize performance, and manage releases with confidenceMentor & influence: Share your expertise through technical feedback sessions, architecture discussions, and guidance to team members; propose improvements to our DevOps practicesDeliver excellence: Build solutions that excel in stability, maintainability, and user experience—using async/await patterns, distributed systems thinking, and proven SOLID principlesWhat We're Looking For 💻Must-Have Experience:10+ years of backend software development with .NET (strong focus on C# and .NET Core/ASP.NET Core)Deep understanding of microservices architecture, containerization (Docker), and orchestration mindsetsExpert knowledge of design patterns, REST/gRPC APIs, and asynchronous programmingHands-on experience with distributed systems thinking—eventual consistency, saga patterns, event-driven architectureProficiency in Agile methodologies (Scrum/Kanban) and test-driven development mindsetProven ability to work in globally distributed, collaborative teamsStrong problem-solving skills and drive to master new domains quicklyNice-to-Have:Experience with messaging systems (RabbitMQ, Azure Service Bus, Kafka)Kubernetes or cloud-native deployment experience (Azure, AWS)Knowledge of financial trading systems, compliance, or market data architecturesLeadership or mentoring experienceWhat We Offer 🌟Professional Growth:Work on high-impact, real-world fintech systems trusted by major European financial institutionsAccess to structured training programs and certifications tailored to your expertise areasParticipate in our active communities of expertise—regular knowledge-sharing sessions, workshops, and technical deep-divesPersonalized mentoring with senior leaders focused on technical and soft skills developmentClear career progression within a recognized, fast-growing consulting firmWork-Life Balance & Culture:Hybrid arrangement: 50% on-site in Lisbon, 50% remote flexibilityCollaborative, employee-centered culture built on learning, transparency, and impactLisbonne office with modern facilitiesCompetitive salary with negotiation flexibility based on your experienceReady to build the future of fintech infrastructure? Apply now with your CV and a brief note on why this opportunity excites you. We review applications on a rolling basis.