Our client is building a fast growing, marketing platform and looking for a Senior Solutions Architect / Backend Developer to play a pivotal role in shaping the architecture of their next-generation platform. You ll design, build, and scale mission-critical systems, working closely with experienced backend engineers while owning and driving a long-term technology roadmap. This is a high-impact role where you ll influence cloud, enterprise, and solution architecture and lead decisions across AWS, cloud-native services, DevOps, and large-scale integrations particularly within affiliate marketing platforms. Responsibilities: Create and maintain comprehensive technical documentation, including API guides, integration documentation, and best practices. Provide architectural leadership with a strong focus on AWS-based solutions. Lead and support affiliate marketing platform integrations. Collaborate effectively across teams, fostering strong interpersonal communication and teamwork. Stay current with industry trends, particularly in .NET and AWS ecosystems. Design and implement cloud-native architectures, REST APIs, and microservices. Work with Spring Boot/Framework, .NET/.NET Core, GitHub, Docker, BPM, SQL, Oracle, NoSQL, AMQP/Kafka messaging, and related technologies. Mentor developers, conduct code reviews, and promote continuous improvement. Lead technical architecture decisions. Requirements: Bachelor s degree in Computer Science or related field. Extensive experience as a Sol