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Software Developer - Backend (Conversational Solutions) at Sinch. Sinch is pioneering the way the world communicates. More than 150,000 businesses — including Google, Uber, Paypal, Visa, Tinder, and many others — rely on Sinch’s Customer Communications Cloud to power engaging customer experiences through mobile messaging, voice, and email.  . Whether you need to verify users or craft omnichannel campaigns, Sinch makes it easy. Our AI-infused Super Network, APIs, and applications ensure you can connect with your customers reliably and securely, at every step of their journey.  . At Sinch, we "Dream Big”, “Win Together”, “Keep it simple”, and “Make it Happen”. These values are our foundation!  . As a Software Engineer, you will play a key role in designing and building the next generation of our AI-powered orchestration platform. You will work in a dynamic, collaborative environment to develop scalable distributed systems that power real-time messaging and LLM-based applications. Your contributions will directly impact the efficiency, performance, and safety of conversations at scale. .  . What You will Do . - Design, Develop, test and support new and existing applications on top of an established framework. . - Build high-performance, scalable, and distributed systems for real-time messaging and workflow execution. . - Work with an agile, cross-functional team taking responsibility for high-quality deliverables. . - Be self-motivated to independently drive through your accepted tasks. . - Collaborate with team members and the product owner to improve and enhance functionality of the code base. . - Implement and maintain best practices for observability, reliability, and fault tolerance across all our services. . - Work with DevOps, support and operational teams as well as external suppliers in order to commission applications. . Who are you? . Passion for coding is the most important ingredient for success. We are a bunch of enthusiastic problem solvers who enjoy solving complex problems. . We’d like you to join if you feel the same way. Teamwork and communication skills are essential. .  . In order to contribute to this role you must have: . - Production-level experience in backend development using Go and Typescript. . - Familiarity with cloud platforms (AWS) and containerized deployments (Docker, Kubernetes). .  - Understanding of distributed systems and experience building high-scale microservices and event-driven architectures. .  - Experience with observability, logging, and monitoring tools for debugging and performance analysis. . - Enterprise applications/tools such as Redis, Kubernetes and Kafka. .  - Experience of using unit testing. .  - Facility with Visual Studio Code, IntelliJ or similar IDE. .  - Problem Solver: A proactive and independent approach to problem-solving and driving tasks to completion. .  - Fluency in written and spoken English. . Nice to have . - Experience with LLM fine-tuning or AI-driven chatbot development. . - Experience building applications that integrate with Large Language Models (LLMs) via APIs.. Our Hiring Process . We are committed to ensuring a recruitment process that is fair, objective, consistent, and inclusive. Our approach includes structured, competency-based interviews designed to evaluate your skills, experience, and qualifications relevant to the role. At times, we may include a data-driven assessment to enhance our hiring success and identify candidates likely to excel.  . We believe in a two-way process and encourage you to ask questions throughout the journey. If this role isn't what you're looking for, please explore the other opportunities listed on our career page: . No matter who you are, we hope you find an exciting path forward - hopefully with us!  . Company Location: Spain.