Senior Optimizely Backend Developer

About the Company First Line Software works with some of the world's top businesses and organizations in industries like healthcare, data engineering, warehouse automation, retail digitalization, mobile app development, and e-commerce. Our projects are as varied as our people, and our people are as talented as they come. We prefer working as a transparent and supportive team, who shares our knowledge as well as our success. Let's see what we can create together.! Responsibilities Design, develop, and maintain robust, scalable back-end solutions using Optimizely CMS and Commerce platforms Collaborate with front-end developers, architects, designers, and stakeholders to deliver seamless digital experiences Develop integrations with third-party systems (APIs, payment gateways, CRM, etc.) Ensure code quality through code reviews, unit testing, and best engineering practices Optimize application performance, scalability, and security Participate in architectural discussions and technical decision-making processes Provide technical mentorship to junior developers and actively contribute to knowledge sharing Stay up-to-date with the latest Optimizely features, tools, and industry trends Requirements 5 years of professional back-end development experience Solid expertise in Optimizely CMS and Commerce (minimum 2 years hands-on) Strong knowledge of .NET Core, C#, and modern development frameworks Experience with RESTful API design and integration Solid understanding of software design principles, architecture patterns, and performance optimization Familiarity with relational databases (e.g., SQL Server) and ORM tools Hands-on experience with version control (Git), CI/CD pipelines, and Agile methodologies Excellent problem-solving skills and attention to detail Strong communication skills and ability to work collaboratively in international, distributed teams Must have Optimizely CMS and Commerce NET Core C# Experience with headless CMS implementations Nice to have Optimizely Certification(s) Knowledge of cloud platforms (Azure or AWS) Familiarity with testing frameworks and automated testing practices The FLS difference Our modern stack projects are the right mix of exciting and challenging Gain access to our diverse range of training programs, courses, and certifications Choose your work style - remote, on-site or hybrid in one of our stunning offices. We offer the freedom of flexible working hours Enhance your language skills with our corporate English classes Work from anywhere and explore the world with our Workation program J-18808-Ljbffr

Location: Brasília, Região Centro-Oeste, BR

Posted Date: 11/11/2025