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Object First is seeking an AWS Backend Developer to build and maintain cloud-based fleet management and monitoring systems using Node.js and AWS services. The role focuses on telemetry processing, microservices architecture, and managing containerized applications within an AWS environment.
Job Purpose: You will be responsible for managing the day to day for application support team, providing technical guidance, coaching, and mentorship to team members to deliver high-quality support services for our…
Build and maintain Kubernetes-based cloud-native infrastructure at a leading Korean fintech company, automating deployments and improving developer experience.
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.
Build and refine Kubernetes-based CI/CD pipelines and observability tooling to help Toss developers deploy and debug services at scale.
Build and improve a community-feed recommendation system for a stock-trading app used by 4 million monthly active users, using Python, PyTorch, and cloud-native serving stacks.
Designs and operates ultra-high-performance AI infrastructure (GPU clusters, InfiniBand, Kubernetes) for Toss Securities' ML services, optimizing resource use and eliminating bottlenecks.
Build and operate ML/LLM platforms for a Korean neobank, focusing on stable, scalable, and secure model training, deployment, and serving using tools like MLflow, Kubeflow, Triton, and vLLM.
Builds and operates a machine-learning platform for a securities app, focusing on LLM serving, gateway systems, and MLOps tooling in Kubernetes.
Leads QA for Toss Payments, defining and optimizing testing processes to ensure fast, secure payment services for B2B/B2C users, with a focus on automation and cross-team collaboration.
Leads the QA team at Toss Payments, defining quality processes, automating tests, and ensuring stable releases for B2B/B2C payment services.
A Security Researcher performs simulated hacking (APT attacks) and infrastructure diagnostics to proactively identify and mitigate vulnerabilities across Toss’s financial systems, collaborating closely with engineering teams to enhance security while balancing usability.
Develops and maintains core insurance CRM, ERP, and CMS systems for agents, focusing on automation, security, and scalability using Kotlin/Java and Spring Boot.
Build and maintain the core server platform for Toss’s fintech services using Java/Kotlin and Spring, focusing on scalability, monitoring, and distributed systems.
Builds and operates high-availability platform services for Toss Bank, including messaging, API gateways, monitoring, and caching, using Kotlin/Java and Spring ecosystems.
Builds shared backend services and frameworks in Java/Kotlin with Spring to help teams launch and scale securities services efficiently.
Build and maintain server-side components for Toss Securities using Java/Kotlin, Spring, Redis, Kafka, and Kubernetes, focusing on high-traffic trading systems and real-time data processing.
Designs and develops high-availability, scalable server systems for Toss’s offline payment solutions, focusing on system architecture, real-time traffic handling, and end-to-end service reliability using Java/Kotlin, Spring, Kafka, and cloud-native tools.
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