Senior Software Engineer

Sinch

. Design and build event-driven pipelines that capture conversational and interaction events across channels and persist them into durable, queryable stores .

Posted 10/23/2026full-timeRemote • SpainSenior💰 €60,000 - €80,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and building event-driven architectures, particularly with a focus on DynamoDB and Kafka for high-throughput systems. Proficient in backend engineering with Golang, including data modeling, API design, and operational excellence in cloud environments.

Highest-signal resume keywords

Event-Driven ArchitectureDynamoDB Data ModelingGolang Backend DevelopmentKafka Event StreamingAWS Cloud Services

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Event SourcingCQRS SystemsMicroservicesData PersistenceAPI DesignInfrastructure as CodeTesting StrategiesDebugging Production SystemsObservabilityCapacity Optimization

Soft Skills

Strong CommunicationDecision-MakingMentoringCollaborationAutonomy

Tools & Technologies

DockerKubernetesCI/CDAWS EKSAI Coding Tools

Industry Keywords

CPaaSCommunication PlatformCloud-Native DesignNoSQLEvent-Streaming Platforms

Tech Stack

Tools & technologies

AWSCloudDistributed SystemsDockerDynamoDBJavaKafkaKubernetesMicroservicesNode.jsNoSQLGo

About the role

Key responsibilities & impact

Design and build event-driven pipelines that capture conversational and interaction events across channels and persist them into durable, queryable stores
Own the data model and storage architecture representing conversational context in DynamoDB for fast, consistent, and cost-efficient access by AI agents
Design system architecture and create technical proposals covering event ingestion, schema/table design, single-table versus multi-table strategies, and DynamoDB read/write access patterns
Build event sourcing/CQRS-style systems reconciling high-throughput Kafka event streams with strongly consistent context reads
Write production-grade Go services with clean, maintainable code, tests, and documentation
Build observable, debuggable, and resilient systems
Own the full lifecycle of systems, including design, deployment, monitoring, and on-call responsibilities
Follow a build-ship-run approach
Design APIs and data contracts enabling AI agent platform teams to retrieve relevant context efficiently
Address data freshness, TTL/retention, partition key design, hot partitions, and query latency at scale
Optimise DynamoDB capacity modes, GSIs/LSIs, and access patterns for cost, throughput, and latency
Contribute to engineering excellence through architecture discussions, code reviews, and standards definition
Mentor team members and share knowledge
Collaborate across teams with product and technical stakeholders, providing guidance on consistency, availability, and performance trade-offs

Requirements

What you’ll need

5–8+ years of professional software engineering experience
Strong backend and platform skills including distributed systems, microservices, event-driven architectures, event-sourcing systems and cloud-native design on AWS
Experience with Kafka or other event-streaming platforms
Solid backend engineering experience in Golang (preferred), Java, or Node; willingness to learn other languages/technologies as needed
Solid experience with data modelling and persistence at scale, ideally with DynamoDB or equivalent NoSQL experience
Experience integrating with LLMs and vector databases in a backend or platform context
Experience with AWS and operations including core AWS services (DynamoDB, EKS, etc.), Docker, Kubernetes, CI/CD, infrastructure as code, and monitoring
Ability to explain architectural trade-offs clearly, especially around storage, consistency, and throughput
Strong engineering fundamentals including clean code, testing strategies, debugging production systems, and building reliable, long-lasting systems
Experience using AI coding tools such as Copilot, Claude Code, Cursor, or similar, with an understanding of their benefits, risks, and best practices
Ability to work autonomously, define scope, and deliver solutions independently; strong decision-making on prioritisation
Strong communication skills with both technical and non-technical stakeholders
Fluency in English
Experience building platforms from scratch is a plus
Background in CPaaS or communication platform is a plus