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Full-Stack Engineer building trading systems spanning data feeds to trading logic using Java, Kotlin, and Python at a financial firm in London.
Full-Stack Engineer building core trading system components—market gateways, data feed handlers, and trading logic—using Java/Kotlin/Python, Spring, React, AWS, Kafka, and Kubernetes at an independent investment bank.
Full-stack software developer building secure public-sector applications using Java/Kotlin, Spring Boot, REST APIs, and databases within an agile engineering team.
Senior Android Developer designing, building, and maintaining high-reliability Android applications on specialized payment devices, working with Kotlin, Jetpack Compose, and transactional systems.
Android Engineer II on the Fulfillment team in Riyadh, building and maintaining native Android apps using Kotlin/Java with Modern Android Development practices (ViewModel, Dagger2, Retrofit2, etc.) for a food delivery platform.
Senior Software Developer or Architect on industrial digitalization projects—building secure, scalable software for IoT/Edge Computing and intelligent devices using cloud platforms (Azure/AWS) and languages like Java, Kotlin, C#, TypeScript, Python, or Go.
Build and ship Android apps for Toss’s fintech products like payments, banking, and cards using Kotlin, RxJava, and Jetpack Compose.
Develops Android apps for offline payment devices and merchant apps, working in a matrix structure to build and deploy features weekly using Kotlin, Jetpack Compose, and TDS.
Designs and operates scalable data pipelines (ingestion, streaming, batch) for real-time user behavior analytics, enabling targeting, recommendations, and performance tracking in a fintech platform. Core techs: Spark, Kafka, Flink, Airflow, and distributed storage (HBase, Cassandra).
Build and optimize real-time data pipelines for Toss Securities, using Kafka, Flink, and OLAP systems to process high-volume financial transactions instantly.
Build and refine CI/CD pipelines and Kubernetes-based infrastructure for Toss Securities, focusing on developer experience and robust monitoring to enable rapid, safe deployments.
Build and maintain Kubernetes-based cloud-native platforms to enable fast, safe deployments and resilient operations for Toss’s offline payment ecosystem.
Build and maintain cloud-native infrastructure on AWS EKS to enable fast, secure deployments for insurance products using Kubernetes, Terraform, and observability tools.
Designs and builds backend services for AI-driven banking products, focusing on scalable ML model serving and robust server architecture in a microservices environment.
Builds and operates a machine-learning platform for a securities app, focusing on LLM serving, gateway systems, and MLOps tooling in Kubernetes.
Build and integrate automated mobile-app security tools (anti-tampering, obfuscation, crypto, SAST/DAST) into CI/CD to harden Toss’s Android and iOS apps.
Build and maintain Toss’s security platform, designing IAM and auth gateways, and creating pre-deployment defenses to block vulnerabilities and malicious code before they reach production.
Develops and maintains core insurance CRM, ERP, and CMS systems for agents, focusing on automation, security, and scalability using Kotlin/Java and Spring Boot.
Builds and migrates Toss Bank’s lending backend systems, transitioning legacy monolithic core-banking code to Kotlin/Spring microservices while ensuring zero-tolerance accuracy for loan calculations and regulatory compliance.
Builds and refactors core banking systems (accounting layer) using Java/Kotlin and Spring, migrating legacy monoliths to scalable microservices for Toss Bank’s digital finance platform.
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