Senior Software Development Engineer 3 (SDE 3) - Ordering Applications Squad

One of our clients in Dubai is looking for Senior Software Development Engineer 3 (SDE 3)Ordering Applications Squad, owns the critical path from product selection to purchase confirmation. Our systems handle payment orchestration, cart management, checkout flows, and promotional engines that directly drive revenue for company's e-commerce platform. Every transaction flows through our stack, so reliability, speed, and correctness are non-negotiable.Design and build transactional backend services for cart, checkout, and payment orchestration with strong consistency guaranteesIntegrate with third-party payment gateways and fraud detection systems, ensuring PCI compliance and secure handling of sensitive dataBuild and maintain the promotions engine, supporting complex discount rules, coupon management, and dynamic pricing at scaleArchitect idempotent payment flows that gracefully handle retries, partial failures, and reconciliation across distributed systemsDevelop high-throughput APIs that support real-time cart updates, price calculations, and inventory reservation under peak trafficDrive observability across the ordering pipeline with structured logging, distributed tracing, and real-time alerting on transaction healthCollaborate with product, finance, and fraud teams to translate business requirements into robust, scalable backend solutionsScope & ImpactOwn and deliver multi-quarter, multi-team product or platform goals, defining technical solutions that level up the entire teamMake independent technical decisions in the face of open-ended requirements, with a deep understanding of business context and customer needsDrive cross-team or cross-discipline initiatives, optimizing beyond your immediate team for broader organizational impactTechnical CraftDesign the software and systems in your area of ownership, ensuring they meet their design objectives and align with longer-term business needsHandle complex software modules that are logically dense — whether from business, idempotence, robustness, or scalability requirementsSimplify code and infrastructure, prioritizing tasks that measurably reduce maintenance and migration costsPreemptively identify and resolve technical risks before they jeopardize projects; resolve cross-team dependencies earlyDebug and reproduce non-deterministic bugs and system issues that would normally escape less experienced engineersChampion an AI-first engineering culture — actively adopt and advocate for AI tools and assistants to maximize productivity, accelerate delivery, and multiply your team's impactLeadership & StrategyDefine the technical roadmap for complex projects, provide leadership for those executing on it, and generate excitement for the team's strategySet and hold the bar for quality and best practices via code and design reviewsAct as a Culture Leader — partner with your manager to set the cultural tone, foster psychological safety, and champion inclusive practicesCoach and mentor teammates, offering direct and actionable feedback delivered with empathy to help others grow into the next levelQualification:Strong proficiency in at least one backend language: Python, Java, or Node.js, with deep understanding of language internals and performance characteristicsProven track record of designing, building, and operating microservices architectures at scale in productionDeep experience with cloud platforms (GCP, AWS, or Azure) including architecture decisions, cost optimization, and multi-region deploymentsExpert-level knowledge of containerization (Docker) and orchestration (Kubernetes) in production environmentsStrong experience with CI/CD pipelines, deployment strategies (blue-green, canary), and automated quality gatesAdvanced database skills: query optimization, sharding strategies, replication, and data modeling for high-throughput systemsExtensive experience with event-driven architectures and message brokers (Kafka, SQS/SNS, Pub/Sub) at scaleDeep understanding of caching layers (Redis, Memcached, CDN) and their role in system performance and reliabilityStrong grasp of API security, OAuth 2.0, JWT, API gateway patterns, and WAF configurationsDomain experience in e-commerce, retail, logistics, supply chain, or similar high-traffic consumer platforms — you understand the business domain, not just the technologyExperience leading technical design reviews and architectural decision records (ADRs) for cross-team systemsTrack record of driving large-scale migrations, platform re-architecture, or system decomposition projectsHands-on experience with observability at scale: custom metrics, distributed tracing, SLO/SLI frameworks, and incident managementExperience with infrastructure-as-code (Terraform, Pulumi) and platform engineering practicesBackground in high-stakes transactional systems: payment processing, order management, or warehouse/logistics platforms