APPLICATION DEVELOPER

• Understand and validate Delivery Receipts (DLRs), SLA requirements, bounce/failure codes, and vendor-specific behaviors. * Validate end-to-end messaging scenarios, including: o OTP latency and delivery o DLR processing o Opt-Out / STOP flows o Inbound / MO messaging o Sender ID and alternate Sender ID failover

• Build and maintain aggregator monitoring, ELF dashboards, anomaly detection, and market-level alerting. * Perform live production troubleshooting during migration and post-migration stabilization. Migration Readiness & Coordination * Establish and follow vendor escalation paths, SLA commitments, and support procedures.

• Become proficient with Sinch Dashboard and Support Portals for production investigation and support.

• Ensure required system, dashboard, portal, and resource access is available to support teams/MIMs.

• Maintain current vendor contacts and escalation information. * Document proxy/gateway configurations, certificates, Sender IDs by market/use case, and failover configurations.

• Define, document, and validate rollback plans before migration.

• Coordinate migration activities and communicate status, risks, and issues to stakeholders. Post-Migration & Syniverse Decommissioning * Confirm zero production traffic is being dispatched to Syniverse before decommissioning.

• Export or retain historical logs/data where required.

• Remove obsolete API/proxy configurations and decommission Syniverse certificates.

• Remove legacy vendor contacts and configurations and update operational documentation.

• Ensure monitoring, alerting, escalation paths, and support procedures reflect the new aggregator environment.

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• Hands-on knowledge of REST APIs and API-based resource operations.

• Experience supporting applications deployed on Kubernetes.

• Working knowledge of Couchbase (multi-cluster environment), Oracle, and PostgreSQL.

• Experience with Jenkins and XLR for CI/CD and deployment orchestration.

• Strong observability experience using ELF, OpenTracing, and OpenTelemetry (OTEL).

• Proficiency with Kibana and Elasticsearch for log analysis, troubleshooting, traffic analysis, and operational monitoring.

• Understanding of certificate management, proxies, gateways, APIs, and production connectivity. Migration & Production Support Skills * Ability to identify critical and non-critical messaging flows by market and use case.

• Analyze market/event-level trends, TPS, latency, success rates, and failure patterns, including pre- and post-migration comparisons.

is the Atos Group brand dedicated to AI-powered, secure, end-to-end digital services. Atos designs, develops, and operates critical digital environments that drive performance, resilience and sovereignty, helping public and private organizations worldwide retain control over their data and infrastructures, while meeting regulatory requirements. With more than 52,000 employees serving over 4,500 clients across 54 countries, Atos helps modernize core IT systems, accelerate cloud and data transformation, strengthen cybersecurity, and deliver secure digital workplace environments to support its clients, its employees and society. Atos also provides consulting and advisory services through its Atos Amplify brand. A trusted partner in operating complex and mission-critical environments, Atos supports organizations across highly regulated and sovereign contexts. About Atos Group is a global leader in digital transformation with c. 54,000 employees and annual revenue of c. €7.2 billion, operating in 54 countries under two brands - Atos for services and Eviden for products and systems. European number one in cybersecurity and a leader in cloud, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group is listed on Euronext Paris.