Sr Software Engineer

Sinch is a Customer Communication Cloud company powering conversations across messaging voice and email helping businesses deliver personalized customer experiences at scale More than ** businesses including leading global tech companies rely on SinchThe RoleWe are building the next generation of conversational AI infrastructure As a Senior Java Software Engineer on the Agentic Orchestration Platform team you will design build and own core components that coordinate AI agents workflow execution and multichannel communication via SMS WhatsApp and voice at scaleThis is a zero to one opportunity to build a new platform from the ground up You will work on complex problems with high autonomy as part of a small senior team with significant impact You will collaborate with Engineering Manager Tech Lead Product Manager Domain Architect and cross functional teamsWhat You Will DoDesign and build core platform components with high ownership and autonomyDrive system design and create technical proposalsWork on distributed event driven systems combining deterministic workflows and AI agent behaviorWrite production grade software including clean maintainable code with tests and documentation Build systems that are observable debuggable and resilientOwn full lifecycle including design deployment monitoring and on call responsibilitiesFollow build ship run approachDevelop platform components integrating LLMs and AI agentsWork with prompt management context handling function calling guardrails and error recoveryAddress challenges like testing non deterministic systems fallback strategies latency and cost optimizationContribute to engineering excellence through architecture discussions code reviews and standards definitionMentor team members and share knowledgeCollaborate across teams with product and technical stakeholdersProvide technical guidance and trade offs and align solutions with business needsWhat We Are Looking ForFive to eight plus years of professional software engineering experienceStrong backend and platform skills including distributed systems microservices event driven architectures and cloud native design.Ability to explain architectural trade offs clearly.Strong engineering fundamentals including clean code testing strategies debugging production systems and building reliable long lasting systemsExperience with Java Spring AI TypeScript or React Deep expertise in at least two core backend technologies and willingness to learn others quicklyExperience using AI coding tools such as Copilot Claude Code Cursor or similarUnderstanding benefits risks and best practicesAbility to work autonomously define scope and deliver solutions independently Strong decision making on prioritizationExperience with cloud and operations including AWS Docker Kubernetes CI CD GitOps infrastructure as code and monitoringStrong communication skills with both technical and non technical stakeholders Fluent English requiredNice to haveExperience with Temporal and Kafka Experience with conversational AI LLMs or agent based systems Experience building platforms from scratch Background in CPaaS or communication platformsThe annual salary for this position is between between €** until €** Factors which may affect pay within this range may include skills, education, experience, and other qualificationsOUR HIRING PROCESSWe 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!#J-*****-Ljbffr

Five to eight plus years of professional software engineering experience Strong backend and platform skills including distributed systems microservices event driven architectures and cloud native design. Ability to explain architectural trade offs clearly. Strong engineering fundamentals including clean code testing strategies debugging production systems and building reliable long lasting systems Experience with Java Spring AI TypeScript or React Deep expertise in at least two core backend technologies and willingness to learn others quickly Experience using AI coding tools such as Copilot Claude Code Cursor or similar Understanding benefits risks and best practices Ability to work autonomously define scope and deliver solutions independently Strong decision making on prioritization Experience with cloud and operations including AWS Docker Kubernetes CI CD GitOps infrastructure as code and monitoring Strong communication skills with both technical and non technical stakeholders Fluent English required Nice to have Experience with Temporal and Kafka Experience with conversational AI LLMs or agent based systems Experience building platforms from scratch Background in CPaaS or communication platforms