backend developer for consumer AI apps

Codeway builds consumer AI apps for mobile and web. It operates six focused vertical companies across AI creativity, wellness, education, media, entertainment, and utilities and productivity.

• Design and implement scalable backend systems, architectures, microservices, and RESTful APIs for mobile and web clients using Node.js and Python
• Own services and features end to end, from ideation and implementation through deployment on GCP/Firebase and continuous optimisation
• Deploy, monitor, and support LLMs and media workflows in production, including model serving, inference performance, and latency and cost trade-offs
• Implement event-driven systems using queues and tasks for media and AI workloads
• Simplify systems by removing unnecessary complexity and building maintainable architectures
• Identify distributed-system bottlenecks and improve latency, throughput, reliability, and costs
• Establish error handling, security practices, and end-to-end observability; contribute to code quality through reviews, testing, and documentation
• Debug production issues and improve system stability and observability
• Collaborate with Mobile, Frontend, Product, DevOps, and AI teams to design and ship features

• 3+ Years of professional experience as a Backend Engineer building consumer-facing products at scale
• Strong hands-on proficiency in Node.js and Python; strong understanding of computer science fundamentals, data structures, algorithms, and system design
• Experience designing and working with microservices and RESTful APIs; understanding of databases, data modelling, performance optimisation, and security practices
• Hands-on experience with cloud environments such as GCP, AWS, or Azure, plus production debugging and observability practices
• Experience deploying and optimising AI models in production, including familiarity with external AI APIs and their performance considerations
• Ability to contribute in high-scale environments handling large volumes of traffic and data; strong problem-solving skills and attention to detail
• Proficiency in English and Turkish; able to explain engineering decisions and trade-offs to technical and non-technical teams
• Bachelor's or Master's degree in Computer Science, Engineering, or a related field
• Будет плюсом: supporting mobile apps through backend APIs, GCP tools such as Pub/Sub, Cloud Run, GKE, BigQuery, Cloud Functions, or App Engine, Docker, Kubernetes, CI/CD pipelines, DevOps practices, SSE, WebSockets, Kafka, RabbitMQ, or SQS

• Full-time contract
• Private health insurance and a meal card
• Full visa and relocation support for moving to Barcelona
• Annual learning and development budget for courses, tools, or events
• Sports budget and psychological consultations
• Free access to Codeway’s apps
• A top-notch office in the heart of the city