Principal Engineer, Systems Design Engineering

Role SummaryAs a Principal Engineer in Systems Design Engineering, you will take full ownership of the end-to-end PCIe system design for our NVMe SSD product line. This encompasses client laptops and enterprise servers, guiding the process from PHY/MAC review through ASIC/SoC integration, PCIe SFR/register analysis, and establishing firmware design guidelines that ensure robust link training, link transitions, and low-power behavior. This pivotal role sits at the intersection of PCIe specification compliance, NVMe operational behavior, firmware architecture, platform interoperability, and power/performance optimization.Key Responsibilities· Lead the architecture of system-level PCIe Gen5/Gen6 from an NVMe SSD endpoint perspective.· Define and oversee PCIe + NVMe integration across various SSD products.· Conduct PHY + MAC IP reviews, establishing integration requirements and constraints.· Manage SoC/ASIC integration, including clocks, resets, power domains, straps, lane mapping, and sidebands.· Develop PCIe SFR + firmware guidelines covering flow control, LTSSM observability, power states, and error handling.· Oversee link and low power transitions, including DLRM, L1, L1SS, L0p, ASPM, clock-down, and APST coordination.· Facilitate bring-up and debugging processes: enumeration, speed negotiation, width detection, stability, and AER/error recovery.· Tune customer requirements focusing on latency/power, performance, reliability, and consistency.· Provide expert knowledge regarding PCIe configuration and extended capability registers.· Act as the technical authority for cross-team and customer escalations.Detailed Responsibilities (End-to-End PCIe for NVMe SSD)1. PHY/MAC IP Review (System Design Perspective)· Understand criteria for PHY/MAC/controller IP, including Gen5/Gen6 readiness and equalization capability.· Review IP documents for compliance features and link speed support.· Specify platform-facing requirements such as retimer/redriver compatibility.2. ASIC/SoC Integration Ownership· Integrate PCIe subsystems focusing on clock handling, reset behavior, and power domains.· Define lane policies for NVMe, including width detection and recovery strategies.

As a Principal Engineer specializing in Firmware Engineering at SanDisk, you will lead innovative projects that redefine storage solutions. You will collaborate with cross-functional teams to design, develop, and implement cutting-edge firmware for flash memory products. Your expertise will drive the technical direction and ensure the highest quality standards in our products.

Key ResponsibilitiesSpearhead the design of AI system PCBs.Create and refine schematics while providing layout consultation for PCBs.Analyze and offer insights on PCB signal integrity and power integrity.Essential QualificationsBachelor's degree in Electrical or Electronics Engineering.5 to 10 years of relevant industry experience.In-depth knowledge of passive components, DC-DC converters, LDOs, NOR-flash, DDR, and logic gates.Proficient in Allegro software for PCB design.Strong understanding of PCB stack-up configurations.Experienced in using measurement equipment effectively.Preferred QualificationsSolid understanding and hands-on experience with various VRM topologies.Comprehensive knowledge of passive components.Extensive experience in power supply system design.Experience with PCB-level power integration.Familiarity with circuit simulation tools such as SIMPLIS, Allegro, and HSPICE.Knowledge of high-speed circuit design principles.Contact Informationrecruit@furiosa.ai

About the Team You'll Join- The Infra Engineering Tribe is an engineering organization at Toss that designs and operates the network, systems, and infrastructure to ensure the stable operation of various Toss services.- The Systems Engineer team goes beyond mere maintenance; we fundamentally improve infrastructure structures, eliminate root causes of failures, and establish infrastructure strategies suitable for the introduction of new services and technologies.- Our goal is to ensure that all Toss services possess scalability and stability.The Challenges We're Tackling Together- We operate a large-scale on-premises infrastructure that reliably processes millions of financial transactions.- We design computing environments for diverse workloads (GPU, analytics, ML, etc.).- We analyze root causes during incidents and prevent recurrence through structural improvements.- We design and standardize service architectures that guarantee high availability and scalability.- We operate and optimize data infrastructures based on DW, Data Mart, and Data Lake.- We plan and internalize operational tools, automation, and monitoring systems.Your Responsibilities Upon Joining Us- You will design, build, and reliably operate on-premises-based infrastructure.- You will define issues in complex infrastructure environments and derive optimal solutions.- You will lead system improvements while collaborating with various teams such as data, platform, and security.We're Looking for Someone Who- Has experience operating large-scale Linux servers and network infrastructure.- Is proficient in quickly identifying issues and designing structural solutions.- Has experience in operational automation using scripts such as Python and Bash.- Has experience responding to incidents using open-source monitoring and logging tools.- Can effectively communicate and collaborate with diverse stakeholders. GPU and ML Infrastructure Experience- Experience operating and enhancing GPU Clusters (Slurm, Kubernetes, etc.) is a plus.- Experience supporting ML Ops environments with tools like Kubeflow, MLflow, Airflow is favorable.- Experience with scheduling, monitoring, and resource optimization for AI/ML workloads is advantageous. Data Infrastructure Experience- Experience operating Data Warehouses, Data Marts, and Data Lakes is a plus.- Experience managing distributed data processing infrastructure based on Hadoop and Spark is advantageous.- Experience designing and enhancing hardware for large-scale data processing systems is a plus.- Experience operating Kafka-based data pipeline infrastructure and responding to incidents is beneficial.# Resume Recommendations- Please provide detailed examples of at least two complex problems you defined and solved (focusing on root cause analysis, solution approaches, results, and infrastructure changes).- Detail the projects you contributed to (including project duration, role, technologies used, infrastructure structure, and improvements made).# Journey to Joining Toss- Application Submission > Job Interview > Cultural Fit Interview > Reference Check > Compensation Discussion > Final Acceptance and Onboarding.# A Message for Future Colleagues> "You can experience all aspects of being a System Engineer."- We are looking for individuals who can face complex problems, define them clearly, and solve them optimally. If you want to help innovate infrastructure at Toss, please apply now!

Join SanDisk, a global leader in flash storage solutions, as a Senior Technologist specializing in Datapath Design and Circuit Design Engineering. In this role, you will be responsible for designing and implementing high-performance VLSI circuits, contributing to innovative storage solutions that impact millions of users around the world.As part of a dynamic team, you will collaborate closely with cross-functional teams to drive the development of cutting-edge technologies. This is an exciting opportunity to leverage your expertise in VLSI design and make a significant impact in the industry.

About the Team The Sales Platform Team at Toss focuses on developing the technology that supports Toss’s B2B business. The team works to create and maintain systems that help drive business growth. Role Overview The Sales Systems Engineer will work hands-on with sales-related platforms, including Salesforce. This position plays a key part in shaping the tools that support sales operations and data management. Main Responsibilities Work directly with sales systems, such as Salesforce, to support business goals Partner with Business Analysts to design and build data infrastructure for extracting business insights Manage and maintain sales data for the company Location This role is based in Seoul.

Join Our Team The System Engineer at Toss Securities is part of the System Engineering Team alongside InfraOps Engineers. We build and support systems for both external and internal clients, managing our data center infrastructure. Our team collaborates with top talent in various domains like finance, commerce, portals, and gaming. We aim to support product focus by developing infrastructure that can handle large-scale traffic, while also pushing for automation to accelerate product delivery. Key Responsibilities Manage servers, operating systems, SAN, storage, and backup systems, ensuring robust infrastructure for customer service systems. Allocate necessary server equipment and integrate services when launching new offerings. Operate and manage both IDC and public cloud infrastructure. Who We Want 5+ years of experience in system engineering on Linux OS environments. Proficient in scripting languages (Shell, Python, Perl, Ruby, etc.) to facilitate infrastructure operations in collaboration with developers. Experience in architecting and managing public cloud platforms (AWS). Strong handling of Linux systems and a solid understanding of business implications relevant to our services. Experience in building and operating system automation deployment solutions is a plus. Application Tips Detail two memorable instances of technical problem resolution (e.g., optimization, bug fixes). Provide detailed accounts of projects you've contributed to, including duration, role, tech stack used, and improvements achieved. List the versions of the OS and key solutions you have managed. Journey to Joining Toss Securities Application Submission > Job Interview > Cultural Fit Interview > Reference Check > Compensation Negotiation > Final Offer and Onboarding

Who will you collaborate with?As a valued member of our team, reporting directly to the Sales Director, you will closely engage with the local sales and field service teams, as well as the project team at our Sisco facility. Your primary focus will be on brake systems, encompassing various responsibilities such as sales, business development, project management, and providing engineering support for Hyundai Rotem. How will you make an impact?In this role within the OE Sales team, you will spearhead project sales of brake systems to our clients. You'll coordinate with our Sisco to ensure product suitability for project specifications, address technical challenges with customers, and cultivate long-term relationships. A glimpse into your daily responsibilities:Manage all sales operations for the brake systems business;Lead local project initiatives, ensuring they align with our company's strategic goals;Identify and pursue business development opportunities to meet sales targets;Promote Faiveley Transport’s comprehensive engineering solutions, including services and products for the designated product line;Define engineering requirements based on customer needs and facilitate technical coordination with our HQ and SisCos in Europe;Assist local customers with the application of products within Brake Systems, Air Generation & Dryer, Actuator, and Pneumatic Valves;Address customer quality concerns and liaise with manufacturing sites to resolve issues;Collaborate with customers’ engineering, design, maintenance, project management, and procurement teams to explore new business avenues;Serve as the main point of contact between customers and our SisCo in Shanghai and Europe to ensure technical coordination;Maintain databases and support payment collection efforts;Regularly meet with customers to understand their needs and requirements;Some business travel may be necessary. Key Technical Responsibilities:Define the functions of brake systems at the train level and lead engineering studies to achieve performance targets;Prepare technical proposals and system documentation, including requirements specifications and schematics;Define and conduct commissioning tests for brake systems;Carry out functional and software verification testing;Conduct system-level Failure Modes Effects and Criticality Analysis (FMECA);Collaborate with the HQ engineering team on brake calculations;Support final assembly and verify designs through both static and dynamic tests. What we are looking for:A degree in Mechanical or Electrical Engineering or a related discipline;Strong communication skills and ability to work collaboratively in a team environment;Proven problem-solving abilities in a technical context.

About the Team You'll Join The System Engineer at Toss Securities is a part of the System Engineering Team alongside the InfraOps Engineer. We build and support systems for both external and internal customers while managing our IDC. Our collaborative team consists of exceptional members from various fields including finance, commerce, portals, and gaming. With a focus on 'supporting everything so that we can concentrate solely on the product', we strive to establish infrastructure capable of handling large-scale traffic and are actively pursuing automation to facilitate faster product releases. Your Responsibilities Design, implement, and optimize virtualization infrastructure using VMware and KVM. Conduct ongoing research and testing to provide KVM infrastructure within Kubernetes environments. Collaborate with the service part of System Engineering to deliver virtualization infrastructure and troubleshoot issues as they arise. Design and optimize key architectures related to virtualization, including networking, storage, and computing. Design and operate monitoring solutions such as logging and metric collection, and research automation for data collection. Who We Want to Work With Deep understanding of the fundamental concepts of virtualization technology and its optimization. Experience operating both commercial and open-source virtualization solutions is a plus. Hands-on experience with Kubernetes and troubleshooting within its environment is preferred. Experience in monitoring visualization and related research is advantageous. A passion for learning new technologies and actively applying them in operational settings is desired. Experience not only with virtualization infrastructure but also in service operations is a benefit. Resume Recommendations Please detail two memorable instances of technical problem-solving (optimization, bug fixes, etc.). Describe your contributions to projects in detail (project duration, role, technology stack used, improvements made before and after the project). List the versions of the OS and major solutions you have worked with. Journey to Joining Toss Securities Application submission > Job interview > Cultural fit interview > Reference check > Salary negotiation > Final acceptance and onboarding. Please Note If any false information is discovered in your resume or if any disciplinary issues arise during your employment history, your application may be canceled. According to Toss Securities regulations, applicants who are prohibited from hiring or have disqualifying factors may also have their applications canceled. Disabled individuals and veterans will be given preference in accordance with relevant laws. A Note for Future Colleagues"You can experience everything a System Engineer does."- I worked as a System Engineer in a mobile service company handling massive traffic before joining Toss Securities. In my previous role, I supported numerous platforms, but while working at Toss Securities, I realized that I had been operating without understanding the fundamental principles behind the infrastructure systems. At Toss Securities, we closely collaborate with various departments within the infrastructure. As a System Engineer, I have come to understand the overall architecture and learned various technologies that have illuminated the principles of infrastructure systems. I highly recommend Toss Securities to those System Engineers who want to avoid complacency, love their work, and wish to make a quantum leap in their careers within the best environment for engineers!

Key ResponsibilitiesEstablish, strategize, and execute comprehensive verification plans at both block and system levels.Draft and assess test plans, while developing effective test harnesses and sequences.Ensure the successful completion of the design verification process by achieving predefined metrics related to the test plan, functional coverage, and code coverage.Engage closely with the Design team to troubleshoot, identify root causes, and rectify functional discrepancies within the design.Work collaboratively with cross-functional teams, including Design, Modeling, Emulation, and Silicon Validation, to uphold the highest standards of design quality.Essential QualificationsBachelor's degree in Electrical Engineering, Computer Science, or a related technical discipline.Over 5 years of hands-on experience in block and system level verification employing SystemVerilog/UVM methodologies.Demonstrated expertise with Electronic Design Automation (EDA) tools and proficiency in scripting languages such as Python, Perl, or Shell for verification tool development.Experience in architecting and implementing Design Verification infrastructure, encompassing the entire verification cycle from planning to successful closure.Desirable QualificationsMaster’s degree in Electrical Engineering, Computer Science, or a closely related technical field.Proficiency in creating UVM-based verification environments from the ground up.Expertise in developing Python-based verification environments, including tools like cocotb.Experience in IP or integration verification for high-speed interfaces such as PCIe, UCIe, UALink, and Ethernet.Familiarity with verifying ARM/RISC-V-based sub-systems or SoCs.Strong programming capabilities in Python.Exceptional written and verbal communication skills.Contact InformationFor inquiries, please reach out via email: recruit@furiosa.ai

Key ResponsibilitiesManage and operate the testing infrastructure for our software and hardware solutions.Conduct operations and maintenance on bare-metal equipment utilized for evaluations.Support the evaluation infrastructure to ensure successful product validation.

Key ResponsibilitiesIntegrate and validate IP blocks within the System on Chip (SoC) architecture while assisting in the physical implementation process.Formulate specifications, architecture, and operational scenarios at the SoC level.Comprehend standard interface specifications (e.g., PCIe) and chip operational scenarios to effectively configure integrated IP blocks.Conduct performance analyses through chip-level simulations focusing on bus and memory bandwidth, alongside FPGA prototyping.

Role Overview Toss Careers is hiring a Systems Engineer to strengthen our backup infrastructure in Seoul. This position focuses on building, maintaining, and improving backup systems that protect critical data and support business continuity. What You Will Do Design, implement, and maintain backup solutions to safeguard company data Work with teams across the company to troubleshoot and resolve backup-related issues Monitor and optimize backup system performance Identify areas for improvement and help refine backup processes over time Location This role is based in Seoul.

Toss Securities is seeking an IDC Infrastructure Engineer (Network & System) to help build and maintain the backbone of our data center operations in Seoul. This position focuses on ensuring the stability, efficiency, and continuous improvement of our large-scale infrastructure, covering everything from network design to physical equipment and operational processes. The role is primarily based at our modern data center (IDC), working closely with a team of network and system engineers. What you will do Design hardware architectures for network and server infrastructure, including equipment selection and implementation standards. Develop data center network architectures (such as Spine-Leaf and redundancy) and server/storage configurations. Define technical standards for bandwidth, NIC specifications (10G/25G/100G/400G), cabling (OM, LR/SR, MPO), and switch port setups. Plan physical infrastructure, taking into account rack space, power, and environmental needs. Set and manage organization-wide standards for equipment models, firmware, and configuration templates. Install, configure, and operate servers, storage, and network equipment on site, driving ongoing improvements. Oversee equipment transport, installation, and relocation, ensuring quality and safety throughout the process. Coordinate with contractors for cabling and equipment setup, maintaining technical standards and quality control. Monitor the IDC environment (power, temperature, network, equipment status) and respond proactively to anomalies. Lead first-level incident response and root cause analysis, working to prevent recurrence and resolve complex issues across network, system, and physical layers. Manage the lifecycle of IDC assets, ensuring data integrity and optimizing long-term operational plans for capacity, power, and space. Collaborate with colocation service providers and partners to manage schedules, quality, and costs. Automate repetitive operational tasks, such as firmware upgrades and configuration deployments, and build monitoring/CMDB integrations using SNMP and REST API. Establish and refine operational standards, procedures, and policies for ongoing efficiency. Requirements At least 5 years of experience in data center (IDC) or infrastructure design and operations. Experience designing data center network architectures (Spine-Leaf, redundancy, etc.). Understanding of server/storage hardware and operating systems (Linux, Windows, Hypervisor). Ability to design at the hardware level, with knowledge of NICs, cabling, and switch ASICs. Experience with IDC space planning, rack layout, power, and space design and operations. Background in large-scale equipment installation, relocation, and asset management within IDC operations. Problem-solving skills that address both physical and logical aspects of incidents. Strong communication skills for effective collaboration with contractors and internal teams. Experience with equipment implementation proof-of-concept (PoC), vendor evaluation, and performance validation. Proven ability to create infrastructure standard documents, such as design guides and operational procedures.

Key ResponsibilitiesDevise and execute comprehensive verification strategies for block/IP/SoC, establishing test benches to facilitate effective verification at various levels.Create and implement functional testing protocols based on the established verification test plans.Lead the design verification process to successful completion, adhering to defined metrics for functional and code coverage.Analyze, troubleshoot, and rectify functional discrepancies in the design, working closely with the design team.Engage in collaboration with cross-disciplinary teams, including Design, Modeling, Emulation, and Silicon Validation, to ensure superior design quality.

Key ResponsibilitiesAssess the Power, Performance, and Area (PPA) metrics of our designs during the chip architecture planning phase.Conduct synthesis, perform logic equivalence checking, develop SDC and UPF, and execute static timing analysis.Collaborate effectively with design houses to ensure optimal project outcomes.

Key ResponsibilitiesDevelop and design high-speed interface controller IP.Conduct performance analysis and testing at both IP and chip-level including bus and memory bandwidth simulations.Perform debugging, troubleshooting, and testing of silicon components.Minimum QualificationsThorough understanding of interface protocols (e.g., buses or high-speed interfaces with flow control and retransmission schemes).Proven experience in RTL design, logic synthesis, verification, and timing closure.Solid knowledge of buffer and CDC design is crucial for effective interface design.Preferred QualificationsIn-depth understanding of high-speed interface standards such as PCIe, LPDDR, HBM, Ethernet, or UCIe.Strong grasp of high-speed interface technologies such as SERDES, channel encoding, OSI-7 layer architecture, and equalization techniques.

About the Team You Will Join The Internal System Engineer position at Toss Securities is responsible for managing in-house infrastructure and IT support, collaborating closely with IT Managers and Internal Network/System Engineers. You will design both wired and wireless networks for the headquarters and remote locations, while integrating user-centric security technologies to create a seamless work environment. Your role will focus on enhancing internal infrastructure and operational efficiency, allowing Toss Securities colleagues to concentrate on their work. Your Responsibilities Upon Joining Establish and operate in-house VDI/HCI/virtualization infrastructure. Oversee the deployment and management of the Horizon VDI environment. Build and manage the necessary servers and HCI infrastructure. Streamline repetitive tasks through automation and scripting solutions. We Are Looking for Someone Who Has experience in building and managing servers based on Windows and Linux. Is capable of establishing and operating hypervisor environments such as VMware and Docker. Can manage VMware Horizon-based VDI environments. Possesses experience in setting up and operating various infrastructure services such as DNS, DHCP, AD, and SMB. Has basic knowledge of NAC, VPN, and DLP technologies. Has experience in establishing and managing monitoring tools like Prometheus, Grafana, and Zabbix. Is proficient in automation development using Python, PowerShell, and Ansible. Journey to Joining Toss Securities Application > Job Interview > Cultural Fit Interview > Reference Check > Salary Negotiation > Final Acceptance and Onboarding Please Note If any false information is found in the resume or if disciplinary actions are confirmed during employment, the recruitment may be canceled. Applicants who fall under the hiring restrictions or disqualifying reasons according to Toss Securities regulations may have their applications canceled. Individuals with disabilities or who are veterans will be given preferential treatment according to relevant laws. A Word for Future Colleagues> "You can experience everything as a System Engineer." - I joined Toss Securities after working as a System Engineer in a mobile service company with large traffic. In my previous role, I managed numerous platforms, but at Toss Securities, I realized I had a superficial understanding of infrastructure operations. Here, I closely collaborate with various departments and gain a comprehensive understanding of the overall architecture. I recommend Toss Securities for System Engineers who are eager to learn, passionate about their work, and seeking the best environment for a career quantum leap!

Join our dynamic team where innovation meets collaboration.About the TeamAs a System Engineer at Toss Securities, you will be part of the System Engineering Team alongside InfraOps Engineers.You will be responsible for building and supporting systems for external and internal clients, managing our IDC, and collaborating with exceptional team members from various sectors including finance, commerce, portals, and gaming.We focus on enabling product teams to concentrate solely on their products by building robust infrastructure capable of handling large-scale traffic and driving automation for faster product releases.Your ResponsibilitiesManage and support infrastructure for Toss Securities including servers, OS, SAN, storage, and backup systems.Allocate server equipment for new services and integrate them with existing services.Operate and manage our IDC and public cloud infrastructure.Who We're Looking ForExperience with system engineering and operations based on Linux OS for less than 5 years.Ability to collaborate with developers using scripting languages (Shell, Python, Perl, Ruby, etc.) for infrastructure management.Strong handling of Linux systems and good business understanding of services is preferred.Experience in building and operating system automation deployment solutions is a plus.Resume RecommendationsPlease detail two memorable cases of technical problem-solving (optimization, error fixing, etc.).Provide detailed descriptions of projects you've contributed to (project duration, your role, technology stack used, improvements made, etc.).List the versions of the OS and major solutions you have worked with.Application Journey at Toss SecuritiesApplication submission > Job interview > Cultural fit interview > Reference check > Negotiation > Final acceptance and onboardingAdditional InformationIf any false information is found in your resume or any disciplinary actions in your employment history are confirmed, your application may be canceled.

Key ResponsibilitiesIntegrate and validate High-Speed Interface (HSI) IP blocks within System on Chip (SoC) frameworks while assisting in the physical implementation process.Configure HSI IP blocks to optimize their performance during integration into SoC architectures.Conduct performance evaluations at the chip top level, including bus and memory bandwidth simulations, as well as FPGA prototyping.Perform testing, debugging, and troubleshooting of silicon, collaborating closely with HSI IP vendors to ensure optimal functionality.