Submer

Backend Engineer

• Design, implement, and maintain backend platform services in Go.
• Build and evolve control plane APIs for platform and product capabilities.
• Develop durable provisioning and lifecycle workflows using orchestration patterns.
• Build and maintain frontend and control plane UI components using TypeScript/JavaScript.
• Use AI-assisted development tools to accelerate frontend implementation, iteration, and refactoring.
• Integrate infrastructure systems such as CloudStack, Kubernetes, container runtimes, and image management into product APIs.
• Connect platform services with identity, usage metering, billing, and audit systems.
• Model platform state and service interactions across distributed components.
• Build robust integrations with systems such as Temporal, Keycloak, OpenMeter, MongoDB, PostgreSQL, RabbitMQ, Kafka, Redis, and ClickHouse.
• Ensure backend services are secure, observable, testable, and operationally reliable.
• Collaborate closely with DevOps, and infrastructure engineers to deliver end-to-end platform features.
• Contribute to engineering standards, service design patterns, and API quality across the platform.

Senior Software Engineer – Backend, Control Plane

Platform Engineer

• Design, build, and operate the compute orchestration layer powering a GPU-native cloud platform for AI and high-performance workloads.
• Maintain the existing CloudStack code base used in current production deployments.
• Integrate new upstream CloudStack releases into the internal platform fork.
• Perform upgrades of existing customer environments to newer CloudStack versions.
• Design and execute safe upgrade paths for running production environments.
• Troubleshoot orchestration and provisioning issues in existing deployments.
• Maintain and troubleshoot CloudStack VPC networking.
• Work with and understand CloudStack Debian VPC routers.
• Manage networking implementations based on Open vSwitch (OVS) and OVN.
• Improve the reliability of network orchestration components.
• Manage hypervisor implementations based on KVM and QEMU.
• Maintain and evolve the code responsible for QEMU GPU passthrough, including PCI mapping and exposure of L40S, RTX 6000 Pro, and H200 GPUs to virtual machines.
• Design orchestration and scheduling primitives for the next-generation platform based on Kubernetes, Slurm, and Argo Workflows.
• Build orchestration workflows that expose GPU and CPU compute resources to platform users.
• Implement Kubernetes scheduling strategies including GPU partitioning, Multi-GPU job placement, and Topology-aware scheduling for distributed training and inference.
• Design and implement Kubernetes-based GPU/CPU scheduling infrastructure for multi-tenant AI workloads.
• Design and operate Slurm-based HPC scheduling environments integrated with Kubernetes clusters.
• Implement support for Multi-node distributed GPU training, Gang scheduling, and build automation for Dynamic Slurm node registration.
• Design and implement workflow orchestration using Argo Workflows and develop reusable workflow templates for common platform workloads.

Senior AI Workload Platform Engineer

Sales Engineer

• Partner with the sales team during the pre-sales cycle to understand customer requirements and translate them into technical solutions for GPUaaS, Cloud Gaming, AI workloads and edge compute deployments.
• Design and validate solution architectures including GPU infrastructure, networking, storage, orchestration, and platform integration within telecom operator environments.
• Evaluate customer infrastructure, technical constraints, and deployment scenarios to determine feasibility and ensure alignment with Radian Arc’s platform capabilities.
• Develop and validate detailed BOMs for infrastructure deployments including GPU servers, networking, storage, and supporting components.
• Work with sales and finance teams to prepare technical proposals, solution documentation, pricing inputs, and quotes for customer opportunities.
• Participate in customer meetings, technical workshops, and discovery sessions to present Radian Arc’s platform capabilities and answer technical questions.
• Collaborate with technology partners and hardware vendors to ensure accurate configurations, pricing, and solution compatibility.
• Assist in preparing technical documentation required for proposals, contracts, and order processing including system diagrams, architecture overviews, and deployment requirements.
• Work closely with Product, Engineering, and Service Delivery teams to ensure proposed solutions align with operational capabilities and deployment timelines.
• Help refine internal tools, templates, and processes for solution design, quoting, and sales engineering workflows.

Sales Engineer – GPUaaS, Cloud Gaming

Procurement

• Manage end-to-end procurement processes for construction-related goods and services across Submer’s data center projects.
• Source qualified suppliers and contractors for structural, electrical, mechanical, plumbing, firefighting and technology-related scopes along with administrative purchase if any.
• Prepare, evaluate bids and lead commercial negotiations in coordination with project stakeholders.
• Develop and maintain procurement schedules aligned with project delivery timelines.
• Ensure compliance with cost, quality, and sustainability targets throughout the procurement lifecycle.
• Monitor vendor performance, track deliveries, and manage supplier relationships to ensure accountability.
• Work closely with finance, engineering, and construction teams to optimize budgets and cost control.
• Support the implementation of digital procurement tools and platforms for streamlined operations.
• Maintain accurate documentation, contracts, and procurement reports.

Data Center Procurement Manager

Product Manager

• Own the approved delivery plan for Bigcat Pass racks (first-generation platforms variants and follow-on releases).
• Translate the high‑level plan into detailed, executable project schedules with clear deliverables, owners and deadlines across Mechanical, Thermal/CFD, Electrical, Controls/Firmware, Industrialization, Quality and Supply Chain.
• Establish and run appropriate governance, reviews and escalation mechanisms, given its strategic importance and technical risk.
• Drive day-to-day execution to ensure milestones are met from design freeze through validation, certification, industrialization and launch.
• Track progress against scope, schedule and budget; manage critical paths and complex technical dependencies.
• Identify risks early and coordinate mitigations across disciplines, suppliers and partners.
• Escalate major deviations and trade-off decisions with clear impact analysis and options.
• Ensure agreed BCP scope and key features (density targets, supported cooling modes, serviceability, safety, monitoring) are delivered as defined.
• Manage change requests, assessing impact on performance, timing, cost and risk.
• Work closely with Engineering, Quality and Compliance and Sustainability to ensure prototypes and final BCP racks meet performance, reliability and regulatory requirements for ultra-high-density mixed‑technology cooling systems.

Senior Product Manager

Growth Marketing

• Identify, assess, and secure land opportunities aligned with data center technical requirements (size, zoning, connectivity, environmental constraints).
• Build and maintain a pipeline of on-market and off-market sites through relationships with landowners, developers, brokers, and municipalities.
• Lead initial negotiations including purchase options, lease structures, and exclusivity agreements.
• Coordinate legal, technical, and environmental due diligence processes.
• Identify sites with viable grid access and sufficient electrical capacity for high-density data center operations.
• Engage with utilities, transmission operators, and energy providers to assess availability, connection timelines, and upgrade requirements.
• Negotiate power connection terms, tariffs, and infrastructure contributions.
• Analyze urban planning regulations, land classification, and permitting feasibility at local, regional, and national levels.
• Coordinate with authorities to understand zoning changes, licensing pathways, and infrastructure approvals.
• Mitigate entitlement risks by structuring projects aligned with planning frameworks.
• Develop high-level feasibility assessments including land pricing, grid connection costs, and infrastructure investments.
• Work closely with engineering, design, and construction teams to validate site suitability.
• Support financial modeling inputs related to land acquisition and energy delivery.
• Act as the primary liaison between landowners, utilities, public authorities, consultants, and internal project teams.
• Build long-term partnerships within the real estate, infrastructure, and energy sectors.
• Represent the company in negotiations, industry forums, and early-stage project discussions.

Land Acquisition Manager

QA Automation Engineer

• Develop detailed electrical schematics ensuring safety, energy efficiency, electromagnetic compatibility (EMC), and compliance with applicable standards.
• Collaborate with cross-functional teams in the full product lifecycle (NPI - New Product Introduction, quality assurance), from conceptualization to industrialization.
• Program and implement control logic using PLC environments for prototyping and custom series.
• Develop embedded software for process control.
• Manage and optimize the Bill of Materials to ensure the electrical design is viable for high-volume manufacturing.
• Develop and maintain detailed documentation, including technical specifications, user manuals, and maintenance procedures.
• Diagnose and resolve issues in automated systems to minimize downtime and ensure optimal performance.

Senior Automation Engineer

Mechanical Engineer

• Own the architecture and development of control systems across cooling, power, plumbing and support utilities.
• Design and integration of PA, FA, Rodent repellant, WLD, BMS, ASD, Security and access control, CCTV system etc.
• Define control strategies, sequences of operation, alarm logic, failover logic and interlocks across mechanical and electrical systems.
• Develop PLC, HMI and SCADA code and oversee software integration with building management systems, EPMS and monitoring platforms.
• Produce control architecture diagrams, network layouts, data models and interface specifications.
• Perform cross-functional design reviews to ensure control systems align with mechanical, electrical and systems architecture requirements.
• Review and approve vendor controls submittals, functional specifications, hardware selections and software implementations.
• Validate system performance during FAT, SAT and commissioning, including troubleshooting controls, sensors, networks and automation workflows.
• Coordinate with cybersecurity and IT teams to ensure controls networks meet security and reliability requirements.
• Mentor controls engineers and support training for engineering, operations and commissioning teams.
• Support continuous improvement of the MEP modules by identifying opportunities for automation, optimization and predictive insights.

IBMS Design Engineer

Designer

• Develop and maintain 2D and 3D electrical models, drawings and layouts for power distribution, branch circuits, conduits, cable trays and electrical equipment
• Produce plans, one line diagrams, schematics, panel schedules, conduit routing, grounding layouts and installation details
• Maintain accurate electrical models in Revit or CAD platforms, ensuring updates align with engineering direction and project standards
• Coordinate electrical layouts with mechanical, plumbing, structural and architectural teams to support a clash free, well integrated design
• Incorporate engineering markups, redlines and design changes throughout concept development, design progression and construction
• Support the creation and maintenance of electrical CAD standards, templates, drafting libraries and documentation workflows
• Participate in model reviews and coordination sessions with cross functional teams
• Assist with as built updates based on field feedback, vendor information and commissioning input
• Maintain organized file structures, version control and consistent drawing practices

Senior Electrical CAD Designer

• Market and Customer Insight: Build a deep understanding of the global market for advanced cooling AI infrastructure. Conduct regular interviews with strategic customers, partners, and channels.
• Product Strategy, Roadmap, and Portfolio Management: Define and maintain the product line vision and multi-year roadmap for high-density racks.
• Business Case and P&L Ownership: Own the P&L of the product line: build and update business cases.
• Cross-Functional Leadership and Execution: Lead cross-functional product line forums, bringing together various teams.
• Product Definition and Lifecycle Management: Translate market and customer insights into clear product requirements.
• Sales and Go-to-Market Support: Support Sales and Technical Sales Specialists on deals.
• Governance and Reporting: Report product line performance and major risks/opportunities to the CPO and leadership team.

Principal Product Manager

• You will be part of the Product Sales & Marketing Team and own the end-to-end delivery of new Modular Power POD products and major releases.
• Translate product intent into executable delivery plans across engineering (Mechanical, Electrical, Controls), industrialization, quality and supply chain.
• Drive day-to-day execution to ensure key milestones are met from design freeze through certification, industrialization and launch.
• Ensure agreed product scope, features and performance targets are delivered as defined by Product.
• Provide clear, concise project status reports to leadership on milestones, risks/issues, budget status, upcoming decisions.

Delivery Product Manager – MEP, Modular Power POD Product Line

• Lead mechanical system design for HVAC, chilled water systems, air distribution, ventilation, and other mechanical building systems for mission-critical facilities.
• Develop technical specifications, load calculations, mechanical layouts, 3D models, and construction drawings in accordance with project requirements and industry standards.
• Perform thermal load calculations, fluid flow analysis, and equipment sizing (chillers, pumps, CRAHs/CRACs, heat exchangers, piping networks, etc.). Review / carryout the CFD analysis.
• Ensure designs comply with relevant codes and standards (ASHRAE, IMC, IPC, NFPA, local building codes).
• Collaborate closely with electrical, structural, controls, and architectural teams to integrate mechanical systems into coordinated facility designs.
• Review and support submittals, shop drawings, procurement packages, and equipment selections.
• Oversee field investigations, site surveys, construction support, and commissioning for mechanical systems.
• Troubleshoot and optimize mechanical systems during start-up, testing, and operational phases.
• Mentor junior mechanical engineers, conducting technical reviews and providing guidance on best practices.
• Support continuous improvement of internal design standards, QA/QC procedures, and documentation.
• Assess and evaluate emerging HVAC and mechanical technologies to improve efficiency, sustainability, and resiliency in facility designs.

HVAC Design Engineer

• Define and lead mechanical architecture development for liquid-cooled racks, including manifolds, server interfaces, and facility connections.
• Drive system- and rack-level integration, ensuring compliance with performance, safety, structural, shock/vibration, seismic and reliability targets.
• Partner with rack suppliers and internal design teams to co-develop mechanical designs aligned with company standards for performance, usability, and cost.
• Perform or coordinate thermal-hydraulic analysis to optimize loop design, flow distribution, and cooling efficiency.
• Own CAD design, documentation, and release of mechanical components and assemblies.
• Lead engineering validation activities, including test plan creation, prototype builds, and root-cause analysis of design or integration issues.
• Conduct design reviews to ensure manufacturability and compliance with mechanical standards and best practices (DFM, DFR, and serviceability).
• Collaborate with system architecture, electrical, and manufacturing engineering teams to deliver a balanced and high-performance rack solution.

Lead Mechanical Design Engineer

• You will join the Product Sales & Marketing Team as the end-to-end business leader for a standard, off-the-shelf Modular Power POD product line.
• The Power POD is a prefabricated containerized solution integrating power and cooling infrastructure for high-density, liquid-cooled AI deployments (container, power transformer, RMU, UPS, CRAC/CRAH, batteries, power cabinets and optional chillers).
• You will act as a “mini-GM” for this product line, owning market insight, product strategy, roadmap and financial performance (P&L) from concept to end-of-life.
• The role combines strong MEP understanding with business, negotiation and stakeholder-management skills to deliver safe, code-compliant, cost-effective and repeatable Power POD solutions.
• Understand customer needs for standard Modular Power PODs combined with high-density liquid-cooled racks and tanks products developed at Submer: Translate market needs into scalable, repeatable product definitions.
• Engage with datacenter operators, hyperscalers, colos, micro DCs, EPCs, and integrators to define what “off-the-shelf but configurable” means in practice.
• Analyze competing containerized power/cooling solutions and reference architectures to identify differentiation and white space for the Power POD line.
• Define and own the Modular Power POD vision, roadmap and portfolio evolution.
• Ensure alignment with the tank, rack and DLC roadmaps, so that customers can buy coherent end-to-end, liquid-ready bloc solutions.
• Own the business case and P&L for the Power POD product line.
• Define pricing structures for PODs and discount rules with Finance and Sales, securing margin in large AI infrastructure deals.
• Monitor revenue, gross margin, configuration mix and pipeline; drive corrective actions when the Power POD line deviates from objectives.
• Translate market and project requirements into Power POD standard product specifications: Define standard configurations and option packs with controlled customization.
• Own the product lifecycle of the Power POD from introduction, growth, maturity to end-of-life.
• Support Sales on Power POD deals, configuration, sizing, compliance and trade-offs.
• Contribute to standard offer documentation, RFQ templates, tender responses, reference designs and TCO/value arguments for containerised power/cooling blocks.
• Enable scalable GTM through standard offers, documentation and training sales channels, partners and internal teams on the Power POD catalogue.

Senior Software Engineer – Backend, Control Plane

Senior AI Workload Platform Engineer

Sales Engineer – GPUaaS, Cloud Gaming

Sales Engineer – GPUaaS, Cloud Gaming

Data Center Procurement Manager

Senior Product Manager

Land Acquisition Manager

Senior Automation Engineer

IBMS Design Engineer

Senior Electrical CAD Designer

Principal Product Manager

Delivery Product Manager – MEP, Modular Power POD Product Line

HVAC Design Engineer

Lead Mechanical Design Engineer

Staff Product Manager – MEP, Modular Power POD