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As a Senior Software Engineer at Walnut, you will be part of a team thats excited about building amazing products while taking pride in the code that powers it. We embrace functional programming principles across our stack, leveraging ReScript on the frontend and Elixir on the backend to build robust, maintainable systems.

Our current stack is composed of React, ReScript, Elixir, GraphQL, Docker, and AWS.

What you will do:
Own features end-to-end, from development through testing and deployment.
Design and develop full-stack solutions that power our core product features.
Collaborate with stakeholders to define, build, and release new features.
Participate in technical decision-making regarding architecture and technology choices.
Ensure code quality and system security through automation, unit testing, and structured code reviews.
Help maintain and improve our development practices and processes.
Work autonomously and manage priorities effectively in our asynchronous, remote-first environment.

As a Staff Software Engineer, you will be a technical leader who shapes our engineering culture and architecture while mentoring other engineers. We embrace functional programming principles across our stack, leveraging ReScript on the frontend and Elixir on the backend to build robust, maintainable systems.

Our current stack is composed of React, ReScript, Elixir, GraphQL, Docker, and AWS.

What you will do:
Lead the architectural design and implementation of complex, cross-cutting features and systems.
Drive technical excellence by establishing best practices, design patterns, and coding standards.
Mentor and provide technical guidance to engineering teams across multiple projects.
Collaborate with product and engineering leadership to develop technical strategy and roadmaps.
Identify and resolve systemic technical issues before they impact product quality.
Contribute to high-level technical decisions regarding scalability, performance, and security.
Lead complex refactoring efforts to improve system resilience and maintainability.
Represent engineering in cross-functional initiatives and stakeholder discussions.
Champion innovation while maintaining a pragmatic approach to delivery.

we are an industry leader with groundbreaking developments in High-Performance Computing & Networking, Artificial Intelligence, and Visualization. Our work opens up new universes to explore, enables outstanding creativity and discovery, and powers what were once science fiction inventions from artificial intelligence to self-driving cars!
We are now looking for an outstanding, creative & hardworking Firmware PHY/Algorithms Engineer to join our team. You will be responsible for firmware development, characterization & validation of state-of-the-art network devices. Work as part of a team with circuit design, algorithm, architects & HW design to ensure outstanding product development from concept to customer satisfaction. The qualified candidate should be comfortable working on different code environments and should demonstrate a passion for the creation, execution, and improvement of FW features to control mixed-signal circuits.
What youll be doing:
Implement FW functionality in signal processing units of our company products
Work closely with the architecture, HW, and SW design teams
Define implement and maintain FW algorithm to control the Silicon
Develop and test FW on emulation & simulation environments during the Pre-silicon phase
Debug and screen HW/FW/SW issues
Take an active part in silicon bring-up and SW development phases
Lead data-driven discussions about the product functionality and areas for improvement.

We are now looking for best-in-class Senior Chip Design Verification Engineer to join our outstanding Network Adapter Silicon group, developing the industry's best high-speed smart communication devices, Data Processing Unit (DPU), delivering the highest throughput and lowest latency! Come and take a significant part in verifying and designing our groundbreaking and innovating chips, enjoy working in a meaningful, growing and highly professional environment where you make a huge impact in a technology-focused company.
What you'll be doing:
Work in a verification team which develops some of the Networking silicon core units.
Build reference models, verify and simulate chip blocks/entities according to specifications under challenging constraints with high orientation to performance.
Gain a strong understanding of chip Micro-Architecture and features, and develop the verification environments.
Work closely with multiple teams within organizations such as Architecture, Micro- Architecture, and FW.

Our networking product engineering team is looking for a test development engineer. The position combines an understanding of HW and SW to provide stable, efficient, smoothly running production tests, to enable high availability, while ensuring the quality of the products being shipped to customers.
What youll be doing:
Design and develop automated tests for networking Switches while working closely with the HW, ASIC, and SW Engineering teams to achieve a reliable test with high coverage
Exposed to various aspects of design, DFT, and test of our company's next-generation network products
Take a significant part in the definition and development of tests from the development level to the final test of Network-Systems
Working with overseas manufacturing teams to increase yields, test coverage, and capacity, and reduce production costs.

We are seeking a highly motivated, detail-oriented, and data-savvy Business Operations Coordinator to join our growing Business team. This is a unique opportunity to immerse yourself in the dynamic world of sports betting and iGaming, working alongside a fast-paced, collaborative team that thrives on innovation and operational excellence.

As a Business Operations Manager, you'll play a key role in streamlining internal operations, enabling data-driven decision-making, and supporting cross-functional teams with actionable insights. Youll gain first-hand experience in business analytics, process improvement, and partner data management-all within a high-growth startup environment.

What will you do:

Own and manage data operations: Process and validate sales data from business partners, ensure seamless integration into internal systems, and maintain high data accuracy

Generate actionable reports: Create and analyze financial and performance reports to support strategic decision-making.

Support core business functions: Act as a key point of contact between the Business Development, Partnerships, and Campaign teams.

Lead data lifecycle efforts: Oversee end-to-end data development workflowsincluding business requirement gathering, QA, implementation, and maintenance.

Optimize tools and systems: Work with internal platforms such as ClickUp, Tableau, Google Data Studio, and Slack, while providing feedback on tool performance and usability.

Contribute to billing processes: Participate in the monthly billing cycle by ensuring timely, accurate reconciliation of partner data.

Thrive in a cross-functional setting: Navigate a multi-stakeholder environment with competing priorities, and adapt quickly to change.

our company Networking team is looking for an outstanding candidate who thrives in a multifaceted environment, to assist in the planning, coordination, and execution of software releases, working under the guidance of senior release managers. The candidate will coordinate between development and testing groups and between global SW groups. In addition, the role will require to gain good understanding of products dependencies. This position requires a foundational understanding of SDLC, Agile methodologies, and release management processes.
What youll be doing:
Be an effective leader in crafting and driving a delivery high quality SW in an efficient way.
Partner with Engineering, Operations, Architecture and Marketing to coordinate the release of the products and ensure release will meet the schedule and with high quality
Work with planning and tracking systems to assist the senior managers in tracking release progress and build release indicators
Partner with the QA teams to ensure alignment of all tests between the development, verification and QA groups
Collaborate with teams across the globe to drive process changes that can help improve development and release workflow
Take ownership of cross products tasks (i.e. ongoing management of customer bugs, release checklists, and more).

we are a world leader in Artificial Intelligence, High-Performance Computing, and Visualization. Our invention, the GPU, has transformed modern computing and is at the heart of our products and services. We set the standard in groundbreaking technology, making our company one of the technology industrys most desirable employers. We are seeking a talented and passionate DevOps Engineer to join our team.
If you excel at creative problem-solving, thrive in a fast-paced environment, and are eager to collaborate with distributed teams, we want to hear from you!
What Youll Be Doing:
Design, build, and maintain robust HPC and cloud infrastructure utilizing state-of-the-art technologies and cutting-edge hardware.
Automate the deployment, configuration, and management of network and compute resources, including bare metal servers, network switches, and VMs.
Develop and streamline CI/CD pipelines to enable continuous integration and delivery for our R&D engineering teams.
Optimize infrastructure for availability, performance, observability, security, scalability, and cost-efficiency. Collaborate closely with software development teams to integrate automated testing and quality assurance into deployment workflows.
Troubleshoot and resolve issues spanning infrastructure, networking, hardware, and software environments. Stay current with industry trends and incorporate best practices in DevOps and infrastructure management.

We are seeking a highly motivated Technical Project Manager to join the R&D department.

What will you do?

Take full ownership, understand the business needs and workflows, Identify the problems and needs, conduct the necessary research, and decide the appropriate course of action.

Work closely with cross-functional teams to ensure the project's success.

Manage and monitor projects with top-down oversight throughout entire execution to ensure success as defined by adherence to standards of scope, budget, and timeline.

Collaborate with top-notch developers to define the product strategy, prioritize the backlog and deliver on time with high quality.

Be the voice of the cross-functional teams and other product managers by understanding the developer pain points, driving the discovery process, and delivering innovative solutions that address their needs.

Developing data infrastructures and the admin system while considering all stakeholders' needs.

We are seeking a highly motivated Back-End Developer with excellent problem-solving and communication skills, which will be joining a dynamic team. A strong developer with some practical experience, and the drive and enthusiasm to succeed in a demanding and professional team environment.

Were looking for employees who are ambitious, willingly take ownership, and execute effectively - all to power the company forward.

What will you do?

We are looking for someone who can plan, build and maintain a high-performance & scalable platform. Develop elegant solutions using open-source tools.

The Back-end Developer will proactively look for ways to make the system better. We are looking for a motivated, innovative and results driven person.

Are you a Software Engineer with a passion for building the rock-solid infrastructure that empowers developers? Our Infrastructure team is looking for a talented engineer to solve complex DevOps challenges through code in what is fundamentally a software development positionone where the product you build is the engineering ecosystem itself.
You will be responsible for engineering the CI/CD pipelines, automation, and tooling that our entire R&D organization relies on. We need a developer with a strong Computer Science foundation who can write clean, efficient code and understands that the best infrastructure is treated as a software product. If you are ready to apply your development skills to the DevOps domain and contribute to innovative AI-based initiatives, this is the role for you.
What youll be doing:
Develop and Scale our CI/CD Platform: Engineer and enhance our CI/CD pipelines using Jenkins, Gerrit, Python, Groovy, and Bash, focusing on reliability, speed, and scalability.
Automate Core Processes: Design, code, and maintain robust automation for our Linux kernel and software package build systems using tools like Docker and Ansible.
Build Developer Tools: As part of a dedicated team, you will develop critical engineering tools that improve developer velocity and code quality, and contribute to innovative AI solutions aimed at enhancing developer productivity.
Own the Full Lifecycle: Take full ownership of your software and systems, from design and coding to testing, deployment, and operation.

we are an industry leader with groundbreaking developments in High-Performance Computing & Networking, Artificial Intelligence and Visualization. We are now looking for an outstanding, creative & hardworking engineer to join our team! You will be part of the Post Silicon Software Tools & Automation team in our company Networking Business Unit. The team is responsible for the infrastructure, GUI tools, and all software-related applications of the high-speed communication products, and working with RND teams to ensure outstanding products and superb automated tools.
What youll be doing:
Develop software tools and infrastructure to control the hardware of our company products
Provide software solutions and guidelines for post-silicon engineers in multiple teams
Train users on software tools usage
Support requests from customers across various time zones.

we are searching for a highly motivated, creative SW manager with experience in system software to join the Software management team. You will lead a major company Software team to develop tools that enable developers worldwide to harness the full power of our company products. We are looking for a candidate with the ability to thrive in an environment with complex software and hardware designs, take ownership and lead key components shipped in all our company products, from supercomputers, workstations, automotive projects, cloud and web services.
What you'll be doing:
Be part of SW/HW projects in a large and cross platform codebase, with key focus on leading the development of tools kit for Network interface controllers, switches, routers optic modules and transceivers
Collaborate across software and hardware teams to define, plan and deliver on commitments, following all the way through the architecture definition process from design, development to features bring up and productization
Drive the tool support with the early modelling and simulation required to produce our outstanding products
Collaborate effectively with teams from all around the globe for higher productivity
Provide technical guidance and career mentorship to the team. Empower the team members to excel and to increase team productiveness.