Senior .NET Engineer

Senior .NET Engineer Senior Full time Position overview We are looking for a Senior .NET Engineer to drive one of our projects built on Fintech.Core, our modular white-label fintech platform. The ideal candidate will lead a product module development and take ownership of both the technical quality and efficiency within a major client deployment. The role includes acting as a technical expert at the module domain level, responsible for making integration decisions, and ensuring alignment with security, reliability, and other non-functional expectations. This position is well suited for a proactive engineer with solid experience in the fintech or related domain. Project description A modular white-label fintech platform based on microservices architecture designed for financial institutions (e.g. challenger banks, PSPs, trading and payment platforms). The platform is cloud-agnostic by design and currently runs on AWS, using Kubernetes, .NET Core, PostgreSQL, gRPC protocol, RabbitMQ (MassTransit). Current use cases A financial platform for a regulated institution with EMI and VASP licenses in the Philippines. The solution will combine digital banking and cryptocurrency services, including secure wallets, payments, remittances, and card issuing. A key part of the project is an in-house crypto trading module designed to provide a seamless and compliant experience for a growing global user base. The platform includes:Custodian walletsLiquidity management (Hot & Cold wallets)Crypto transfersKYTTrading (Matching Engine)Core bankingCard issuingPayment processingA unified wealth platform combining banking, payments, digital assets, and institutional-grade yield within a single regulated ecosystem. It bridges traditional finance with modern digital markets, combining the security of licensed financial partners with the efficiency of stablecoin infrastructure. This delivers a frictionless user experience that empowers anyone to manage, earn, and spend instantly and globally. Built on a modular, compliant, and scalable architecture, it connects fiat banking, blockchain infrastructure, and off-chain yield engines into a single system. Key features include:Non-custodial walletsVault engine (Smart Contracts)Investment in VaultYield AccrualCard transactions processing YOUR BACKGROUND At least 5 years of experience as a Software EngineerExperience with banking or fintech projectsUnderstand the big picture and offer insightful advice about technologies and projectsStrong problem-solving skills and the ability to manage and resolve team conflicts effectivelyProficiency in designing and implementing software architecturesClean coding methodologies (SOLID, YAGNI)Professional .NET backend development experienceExperience writing and using REST APIs using ASP.NET Web APIWide experience with Docker is requiredExperience with Kubernetes is requiredDatabases: SQL {PostgreSQL, MySQL}, NoSQL {Apache Cassandra, Redis, MongoDB}Experience with queue (Rabbit, Kafka)English level - B2+Additional languages - Ukrainian/Polish Skills That Will Be a Plus Experience in working with gRPC protocolExperience in solution design for complex microservice-based architecturesProven experience as a Tech Lead or similar leadership role in software developmentExcellent communication and interpersonal skills, with experience in client-facing rolesCloud: AWS Responsibilities Lead product module development on Fintech.Core and take ownership of technical quality and delivery efficiency within a major client deploymentAct as a technical expert at the module domain level and make sound integration decisionsEnsure solutions align with security, reliability, and other non-functional expectationsDesign and implement scalable .NET backend services, APIs, and integrations across the platformCollaborate with the team and stakeholders to resolve technical challenges and keep delivery on track WE OFFER 20 billable days off in the first year of cooperation, all next years - 25 billable days offFair and competitive compensationFriendly team and enjoyable working environmentClearly described business processes in the company that really workRegular updates on company news, Q&A sessions with top managementFlexible work scheduleRemote work modeAbility to transfer unused vacation to the next year Apply Back to all vacancies SHARE THIS VACANCY YOU MAY FIND INTERESTING Junior .NET Engineer (Madrid) Junior Full time View APPLICATION FORM Apply for this position now! Send us your CV - we’ll contact you. Contact us here