Point your AI agent at freehire and let it find you a job. A CLI and an MCP server over the whole job API — no browser.
Security Engineer at Toss analyzes security events, designs detection rules, and responds to incidents using SIEM, EDR, and threat intelligence to protect services and employee environments.
Build and operate detection rules, analyze security events, and automate incident response for Toss’s services in Kubernetes and cloud environments.
Build and operate a SIEM-based security monitoring system, analyze security events, and respond to incidents for Toss Securities, using tools like Splunk and ELK.
Build and operate endpoint-security solutions for Toss Bank, including device security, access control, AI-driven security, and supply-chain defenses.
Designs and implements cloud-native security architectures (AWS/GCP/Azure) to protect financial infrastructure, automating compliance and threat detection with Python and Terraform.
Build and run endpoint-security controls (SOAR, ZTNA, cloud/container) for Toss Securities, balancing security with user experience and automating policy enforcement across Windows/macOS fleets.
Build and operate security infrastructure (firewalls, IAM, Zero Trust) to protect Toss’s fintech services and employee systems while ensuring compliance with financial regulations.
Security Engineer in the Security Purple Team, responsible for designing, building, and operating SIEM (Splunk, Opensearch, Elasticsearch) and log pipelines (NIFI, KAFKA, Hadoop) across On-Prem, AWS, and K8S environments, focusing on log collection, analysis, and automation.
Perform penetration testing and vulnerability analysis on Toss’s web and mobile apps to find and fix security flaws before attackers do.
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.
Performs penetration testing and vulnerability assessments on Toss’s financial services (web/mobile), researches new attack methods, and improves security for infrastructure and DevOps environments.
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.
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.
Builds and maintains scalable backend services powering Toss’s fintech products like payments, loans, and ads using Kotlin/Spring, MySQL, Kafka, and Redis.
Develops and maintains payment systems, focusing on scalability and reliability. Core technologies include Java, Kotlin, Spring, Redis, Kafka, and MySQL.
📢 지원자 모두에게 코딩테스트 전형의 기회가 주어져요 오직 토스페이먼츠에서만 할 수 있는 경험 “시행착오를 줄여주는 동료들과 함께 나의 가능성을 새롭게 발견해요” 토스페이먼츠를 활용하는 여러 가맹점에 영향을 미치는, 20년 이상의 장기적인 수명을 가진 제품을 만들어요. 이전 기술의 히스토리를 모두 파악하고 이를 토대로 개선 방안을 찾는, 높은 복잡도와 난이도를 가진 업무들을 경험할 수…
Builds and scales high-traffic ad-serving backends for Toss’s in-app ad platform, using Kotlin/Spring and distributed systems like Kafka and Redis.
We couldn't check your fit for this role — add a CV to your profile to see it next time.