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Designs and builds backend services for AI-driven banking products, focusing on scalable ML model serving and robust server architecture in a microservices environment.
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.
ML Engineer at Toss builds and deploys recommendation, search, and AI models across fintech and ecommerce to optimize product exposure, CTR, and user experience using PyTorch, Spark, and Kubernetes.
Designs and operates ultra-high-performance AI infrastructure (GPU clusters, InfiniBand, Kubernetes) for Toss Securities' ML services, optimizing resource use and eliminating bottlenecks.
Build, fine-tune, and operate LLM/NLP models to simplify complex financial-securities information into user-friendly services at a Korean fintech company.
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.
Builds and deploys AI/ML systems for banking services like fraud detection, lending models, and LLM-based agents in a high-traffic, regulated environment.
Network Engineer at Toss, responsible for building and operating networks for various services, ensuring high availability and optimizing performance using BGP, EVPN, and TCP/IP.
Build and run Toss Securities’ network infrastructure, including multi-data-center routing, load-balancing, and office networks, to keep financial services fast and reliable.
Designs, deploys, and maintains network security infrastructure (firewalls, VPNs) to protect Toss Securities’ high-volume financial and commerce platforms, ensuring 24/7 uptime while optimizing traffic and automating operations with scripting/APIs.
Builds and maintains secure network infrastructure for Toss Securities, managing firewalls, DDoS protection, and VPNs to safeguard customer and internal systems.
Design and build a zero-trust VPN and network-access controls; implement cross-platform clients and reverse-tunnel infrastructure while analyzing traffic for anomalies.
Build and maintain Node.js-based automation platforms at a fintech securities company, using TypeScript, NestJS, and distributed systems tools to streamline customer and internal services.
Build and maintain Node.js/Nest.js backend services and automation tools to streamline TossPlace’s terminal lifecycle and logistics operations using TypeScript, MySQL, and React.
Build and maintain Node.js services for a leading fintech platform, handling payments, banking, and financial infrastructure.
합류하면 함께 할 업무예요 담당 지역의 업무 환경에서 발생하는 이슈를 가장 가까운 곳에서 확인하고 대응해요. 지점의 계정, 장비, 네트워크 등 오프라인 지원이 필요한 IT 업무환경 운영을 본사 IT Manager와 함께 진행해요. 지점 신규 입사자가 바로 업무를 시작할 수 있도록 온보딩 및 장비 세팅을 지원해요 사무 환경, 비품, 시설 등 총무 운영을 함께 담당해요 지역 단위 자산 현황을…
Develops payment software for offline terminals, integrating with card processors and security standards like EMV and Apple Pay across Android, Windows, Linux, and RTOS environments.
합류하게 될 팀에 대해 알려드려요 People Systems Manager는 People Systems Team에 속해 있어요. 토스의 인사 시스템은 단순한 백오피스를 넘어, 구성원들이 성장하고 협업하는 경험의 기반이에요. 이 팀은 Workday를 중심으로 다양한 SaaS 솔루션과 내부 시스템을 통합하고, 더 나은 정책과 경험을 만들어 가기 위한 기반 시스템을 설계하고 운영해요.…
Owns and improves the platform powering Toss’s offline payment ecosystem, collaborating with engineers and designers to scale merchant services, admin tools, and automation for POS, payments, and ads.
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