Senior Full Stack Engineer

Ciklum is looking for a Senior Full Stack Engineer to join our team full-time in Ukraine.We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.About the role:As a Senior Full Stack Engineer, become a part of a cross-functional development team engineering experiences of tomorrow.Client for this project is a leading global provider of audit and assurance, consulting, financial advisory, risk advisory, tax, and related services. We are developing an innovative automation platform for the client. It is a globally operating, complex system that is built to enhance and unify the process of collecting, processing and providing Tax and Financial services. The platform is actively used on a daily basis and the team continues to add new features that automate the business flows.Built from the ground up on a fresh codebase, we have been actively developing it. There is no legacy code, and we use the ultra-modern technology stack.Responsibilities:Back-end development of new functionalityParticipating in code and architectural reviews, documenting architectureCommunicating with stakeholders: PMs, developers, architects, QA engineers and other colleaguesProactive position in solution development, processes improvementsDelivering the product roadmap and planning for the futureHandle complex problems that might arise during solution development and provide field support with creative and rapid solutionsEnsure that the highest coding standards are met and write highly testable, automatable and performant code over the whole SDLCRequirements:More than 4 years of experience in commercial software developmentExcellent knowledge of computer science and computing theory:OOP, DDD, SOLID, TDD, BDDDatabase theory (RDBMS, NoSQL)Algorithms and data structuresDesign, architectural and enterprise patternsUnderstanding of network protocols and conventions (e.g. HTTP, REST), authentication and authorization flows and practicesExperience with NoSQL (e.g. Mongodb, DynamoDB)Knowledge of key-value storages (e.g. Redis, Memcached)Basic knowledge of containerization and orchestration (Docker, Kubernetes)Excellent knowledge and experience with C# and .NETCommercial experience with:.NET Framework, .NET Core, ASP.NET (Core, MVC, WebAPI)ORM (e.g. Entity Framework, Dapper)RDBMS (especially SQL Server)Messaging systems (e.g. RabbitMQ, ServiceBus)Cloud providers (e.g. Azure)Testing frameworks (e.g. NUnit, XUnit, MSTest)Web ServersVersion control systems (e.g. GIT)Upper-intermediate English or aboveDesirable:Experience with Search Engines (e.g. ElasticSearch, Azure Search)Experience with REST API development for mobile applicationExperience with integration with 3rd party solutionsWhat`s in it for you?Strong community: Work alongside top professionals in a friendly, open-door environmentGrowth focus: Take on large-scale projects with a global impact and expand your expertiseTailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certificationsEndless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologiesFlexibility: Enjoy radical flexibility – work remotely or from an office, your choiceCare: We’ve got you covered with company-paid medical insurance, mental health support, and financial & legal consultationsAbout us:At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you’ll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.As one of Ukraine’s largest IT companies and a top employer recognized by Forbes, we’ve spent over 20 years delivering meaningful tech solutions. We proudly support diverse talent and military veterans, recognizing their unique skills and perspectives they bring to shaping the future.Want to learn more about us? Follow us on Instagram, Facebook, LinkedIn.Explore, empower, engineer with Ciklum!Interested already? We would love to get to know you! Submit your application. We can’t wait to see you at Ciklum.