Senior Software Engineer

Sykell is at the forefront of the circular economy, driving innovation in packaging systems that eliminate single-use waste. Our mission is to make reusables effortless for consumers and scalable for businesses. We work with major retailers, brands, and logistics providers to build technology that tracks, manages, and optimizes reusable packaging across supply chains.We’re now looking for a Senior Software Engineer to join our core technology team. You’ll help design and build the digital backbone that powers reusable packaging at scale — from APIs and backend systems to front-end applications. This role is ideal for an engineer who thrives in a fast-moving environment and wants their code to make a tangible, positive impact on the planet.What You’ll DoProduct & System DevelopmentDesign, build, and maintain scalable backend and frontend systems.Co-design our domain model and core APIs for reusable packaging management.Take ownership of services running in production, from deployment to monitoring.Architecture & Technical DirectionContribute to architecture discussions and technical strategy.Improve existing systems for performance, scalability, and maintainability.Help shape best practices, development standards, and team processes.Collaboration & ImpactWork closely with design operations and clients to translate real-world needs into elegant technical solutions.Proactively propose improvements and bring ideas that make reuse easier and more efficient.Who We’re Looking ForMust Have2+ years of experience with GoLang.2+ years designing and running applications within AWS cloud.2+ years designing, building and maintaining public APIs.Experience building systems and processes from scratch and running them in production.Proven experience in full-stack development in a product-focused environment.Fluent in English.Nice to HaveExperience with React applications.Familiarity with Flutter and mobile app development.Knowledge of ERP or logistics systems is a plus.Why Sykell?Be part of a mission-driven startup redefining how we consume and reuse everyday products.Build real-world systems that reduce plastic waste and CO₂ emissions.Collaborate with an ambitious, purpose-driven team in a fast-moving environment.Enjoy a flexible remote work policy and a flat, transparent structure.Your success is measured not just in features shipped, but in environmental impact made.Competitive compensation package.