Proto is accelerating the world's transition to an open economy with products that increase access and independence for everyone. We're building Bitkey, a simple and safe self-custody bitcoin wallet that will put customers in control, as well as hardware and software that will help decentralize bitcoin mining and enable new and innovative use cases for bitcoin mining. We're developing these products in the open - you can read more about them at bitkey.build and mining.build. Within Proto, our Bitcoin Products team delivers the product and go-to-market strategy, software, firmware, and custom silicon needed to make Bitkey and our ambitious mining initiatives a reality. Come build the future of money with us!

The Role

We are looking for an ASIC Validation Engineer to help bridge the gap between custom mining silicon design and real-world operation. In this highly hands-on, lab-focused role, you'll work closely with ASIC designers and system engineers to debug issues, build test infrastructure, and generate the data needed to enable rapid design iteration and system-level development.

You Will:

• Bring up new silicon on bench platforms, evaluation boards, and system hardware
• Debug issues across ASIC, board, firmware, and system interactions
• Develop bench tests, scripts, and tools to exercise silicon features and collect data
• Build and maintain test setups (lab automation, instrumentation, fixtures, scripts)
• Partner with ASIC designers to validate functionality and root-cause failures
• Work with system engineers to ensure silicon performs correctly in target system environments, including mining systems
• Generate and analyze data to support design decisions, characterization, and bring-up
• Create lightweight, reusable test workflows and documentation for the broader team
• Support early manufacturing efforts with practical validation and debug, as needed
• Travel up to 20% to the labs in Oakland, CA or Toronto, Canada

You Have:

• Bachelor's degree in Electrical Engineering or related field
• 4+ years of experience in silicon validation, hardware test, or related roles
• Strong hands-on experience in a lab environment (bench bring-up, debugging, instrumentation)
• Solid understanding of digital systems and basic analog concepts
• Experience writing scripts or tools (Python preferred) for test and data analysis
• Comfortable debugging issues that span multiple layers (ASIC ↔ board ↔ system)
• Clear communication skills and ability to work closely with cross-functional teams

Preferred:

• Experience with ASIC or FPGA bring-up and validation
• Familiarity with common interfaces (SPI, I2C, JTAG, UART, etc.)
• Experience using lab equipment (oscilloscopes, logic analyzers, power supplies, etc.)
• Exposure to high-performance, power-dense systems (e.g., mining ASICs, accelerators, or similar)
• Experience building test automation or internal tooling
• Familiarity with data analysis and visualization

Nice to Have

• Experience working with early silicon / first bring-up environments
• Exposure to manufacturing test or ATE
• Experience working on systems with tight power, thermal, and performance constraints

About the Role:

The Machine Learning team at Tubi drives the innovation behind personalized user experiences.  With the largest inventory in the industry and hundreds of millions of viewers, we tackle problems in the space of recommendations, search, content understanding and ads optimization that shape the future of streaming.

We are seeking a highly skilled Machine Learning Engineer to contribute to transformative projects in video personalization. In this role, you will design and implement advanced algorithms and systems to improve our personalization strategy. As a senior technical expert, you will tackle complex problems in machine learning at scale, collaborating closely with cross-functional teams to develop and optimize machine learning-driven solutions.

What You'll Do:

• Lead the design, development, and implementation of advanced recommendation systems and algorithms for a global audience
• Conduct deep dives into algorithmic components and systems, ensuring that models are optimized for both performance and scalability across multiple regions and product areas
• Build and deploy high-impact robust ML pipelines, including data extraction, feature development, model training, testing, and deployment
• Continuously monitor, evaluate, and optimize the performance of deployed models, ensuring they meet business goals and provide high-quality user experiences.
• Work closely with Product, Engineering, and Data Science teams to align on product requirements, set expectations, and deliver machine learning-driven solutions that improve user engagement

Your Background:

• 8+ years of industry experience building production Machine Learning systems
• MSc or Ph.D. in Computer Science, Machine Learning, Statistics, Mathematics, or a related field
• Experience with deep learning technologies for recommendation systems, including TensorFlow, PyTorch, or similar frameworks
• Proficiency in building and deploying full-stack machine learning pipelines: data extraction, data mining, model training, feature development, testing, and deployment.
• Solid understanding of statistical concepts such as hypothesis testing, regression analysis, and performance evaluation metrics for machine learning.
• Ability to deep dive into individual components and systems, as well as understand the overall architecture of machine learning solutions.

#LI-Hybrid #LI-SC1

It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 50+ million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible.

Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy.

The Role

At Cash App, we strive to build the best consumer financial products in the world. The Cash App Banking team aspires to make Cash App the primary place for our customers to store, manage, and move money across all their banking needs. We achieve this by providing various offerings including a range of deposit and transfer options, savings and automation tools, and a suite of benefits for Banking customers, all while ensuring a fast and reliable experience.

As a software engineer on the Cash App Banking server engineering team, you will design, develop, and deliver new banking experiences, through close collaboration across teams and disciplines. The things that you build will create significant impact at scale and will fundamentally change the consumer banking landscape as we know it today.

You Will

• Partner closely with your team to design, develop, test, ship, and maintain customer-facing features
• Participate in critical technical discussions and play an active role as a reviewer of design documents and code changes
• Design and implement systems to work within our microservice and event-driven architectures
• Hold your teammates and yourself to high engineering standards
• Apply an AI-first mindset using tools to improve development speed and quality, continuously experimenting with emerging approaches

You Have

• 5+ years of software development or equivalent experience
• Drive to find flaws in a system with many moving parts and take whatever steps are necessary to fix them
• A growth mindset and an appetite in solving open-ended and ambiguous problems
• Strong communication and collaboration skills
• Bachelor's Degree or Diploma in Computer Science, Computer Engineering, Software Engineering, or equivalent experience

Technologies We Use and Teach

• Java, Kotlin
• AWS
• HTTP, JSON, gRPC, Protocol Buffers
• OkHttp, Jetty, JUnit, Guice
• Hibernate, MySQL, DynamoDB
• Kafka, events, microservices
• DataDog, Prometheus, SignalFx

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We also consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations throughout the recruitment process. If you require an accommodation, let your recruiter know.  Want to learn more about what we’re doing to build an inclusive workplace? Check out our Inclusion & Diversity page.

It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 50+ million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible.

Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy.

The Role

At Cash App, we strive to build the best consumer financial products in the world. The Cash App Banking team aspires to make Cash App the primary place for our customers to store, manage, and move money across all their banking needs. We achieve this by providing various offerings including a range of deposit and transfer options, savings and automation tools, and a suite of benefits for Banking customers, all while ensuring a fast and reliable experience.

As a staff software engineer on the Cash App Banking server engineering team, you will help lead the overall technical strategy of the team, through close collaboration across teams and disciplines. In addition, you'll drive cross-cutting architectural decisions and infrastructure improvements to make our systems more robust and scalable. You will also foster the growth of aspiring engineers to expand their scope of influence beyond their immediate teams. The things that you build will create significant impact at scale and will fundamentally change the consumer banking landscape as we know it today.

You Will

• Partner closely with product managers, designers, engineers, and business leads to develop, communicate and execute technical strategies that benefit the Banking organization
• Play a critical role in influencing leaders across the organization and company to drive consistent, sound and efficient technical decisions
• Stay close to the details of systems that power our products by directly contributing to technical designs and staying hands on with code contributions
• Hold your teammates and yourself to high engineering standards
• Leverage your experience and knowledge to grow your teammates' technical breadth and depth through direct coaching and mentoring
• Apply an AI-first mindset in your everyday work, raising the bar of AI application across the team by staying connected to efforts across the organization

You Have

• 12+ years of software development or equivalent experience
• 3+ years of experience leading large scale features, which includes planning, managing and executing on the delivery projects in a timely manner while maintaining a high quality bar
• Drive and experience in identifying, aligning and landing globally optimal solutions in a system with many moving parts
• The ability to design and build creative solutions to complex problems
• A strong track record in helping other engineers grow
• Bachelor's Degree or Diploma in Computer Science, Computer Engineering, Software Engineering, or equivalent experience

Technologies We Use and Teach

• Java, Kotlin
• AWS
• HTTP, JSON, gRPC, Protocol Buffers
• OkHttp, Jetty, JUnit, Guice
• Hibernate, Aurora, MySQL, DynamoDB, Redis
• Kafka, event-driven architecture, microservices
• DataDog
• Buildkite, Gradle

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We also consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations throughout the recruitment process. If you require an accommodation, let your recruiter know.  Want to learn more about what we’re doing to build an inclusive workplace? Check out our Inclusion & Diversity page.

It all started with an idea at Block in 2013. Initially built to take the pain out of peer-to-peer payments, Cash App has gone from a simple product with a single purpose to a dynamic ecosystem, developing unique financial products, including Afterpay/Clearpay, to provide a better way to send, spend, invest, borrow and save to our 50+ million monthly active customers. We want to redefine the world's relationship with money to make it more relatable, instantly available, and universally accessible.

Today, Cash App has thousands of employees working globally across office and remote locations, with a culture geared toward innovation, collaboration and impact. We've been a distributed team since day one, and many of our roles can be done remotely from the countries where Cash App operates. No matter the location, we tailor our experience to ensure our employees are creative, productive, and happy.

The Role

At Cash App, we strive to build the best consumer financial products in the world. The Cash App Banking team aspires to make Cash App the primary place for our customers to store, manage, and move money across all their banking needs. We achieve this by providing various offerings including a range of deposit and transfer options, savings and automation tools, and a suite of benefits for Banking customers, all while ensuring a fast and reliable experience.

As a senior software engineer on the Cash App Banking server engineering team, you will lead the technical design, execution, and delivery of new banking experiences through close collaboration across teams and disciplines. In addition, you'll drive architectural decisions and infrastructure improvements to make our systems more robust and scalable. The things that you build will create significant impact at scale and will fundamentally change the consumer banking landscape as we know it today.

You Will

• Partner closely with product managers, designers, engineers, and business leads to scope, plan, design, and build new features as well as maintain existing functionality of banking features
• Lead and participate in critical technical, design, and product discussions within the team and with leaders across the organization
• Design systems to work within our microservice and event-driven architectures
• Hold your teammates and yourself to high engineering standards
• Leverage your experience and knowledge to grow your teammates' technical breadth and depth through direct coaching and mentoring
• Apply an AI-first mindset in your everyday work, raising the bar of AI application on our team

You Have

• 8+ years of software development or equivalent experience
• 1+ years of experience leading large scale features, which includes planning, managing and executing on the delivery projects in a timely manner while maintaining a high quality bar
• Drive to find flaws in a system with many moving parts and take whatever steps are necessary to fix them
• The ability to design and build creative solutions to complex problems
• A strong desire to perform and grow as an engineer
• Bachelor's Degree or Diploma in Computer Science, Computer Engineering, Software Engineering, or equivalent experience

Technologies We Use and Teach

• Java, Kotlin
• AWS
• HTTP, JSON, gRPC, Protocol Buffers
• OkHttp, Jetty, JUnit, Guice
• Hibernate, MySQL, DynamoDB
• Kafka, events, microservices
• DataDog, Prometheus, SignalFx

We’re working to build a more inclusive economy where our customers have equal access to opportunity, and we strive to live by these same values in building our workplace. Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally protected class. We also consider qualified applicants with criminal histories for employment on our team, and always assess candidates on an individualized basis.We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations throughout the recruitment process. If you require an accommodation, let your recruiter know.  Want to learn more about what we’re doing to build an inclusive workplace? Check out our Inclusion & Diversity page.

Blue Moon Metals is seeking an experienced and dynamic Senior Project Engineer to join our corporate office, supporting all projects across our organization. This pivotal role is responsible for providing technical expertise, project oversight, and strategic guidance to ensure successful delivery of engineering projects company-wide.  The Senior Project Engineer's immediate assignment will be to our Nussir Project in Northern Norway, requiring long-term stays or relocation to the project region.

Key Responsibilities

• Manage and coordinate engineering efforts for multiple projects, ensuring adherence to technical standards, budgets, and schedules.
• Support project managers and site teams with technical expertise, problem-solving, and risk assessment throughout the project lifecycle.
• Develop and review project scopes, specifications, drawings, and deliverables for accuracy and compliance with company and regulatory requirements.
• Collaborate with cross-functional teams—including design, procurement, construction, and quality assurance—to drive project objectives and resolve technical challenges.
• Facilitate technical meetings, workshops, and design reviews; present recommendations to senior leadership and stakeholders.
• Monitor project progress, identify deviations, and implement corrective actions as required.
• Lead initiatives to improve engineering processes, standardization, and best practices across all projects.
• Mentor and support the professional development of junior engineers and project staff.
• Stay current on industry trends, emerging technologies, and regulatory changes relevant to the metals and construction sectors.

Qualifications and Experience

• Bachelor’s degree in Engineering (Mechanical, Civil, Structural, or related discipline); Master’s degree or P.Eng designation is an asset.
• Minimum 8 years of progressive engineering experience, with at least 3 years in a senior or lead project role in metals, mining, construction, or heavy industry.
• Demonstrated success managing complex, multi-disciplinary projects from conception to completion.
• Strong understanding of project management methodologies, engineering standards, and regulatory requirements in Canada and internationally.
• Exceptional communication, leadership, and interpersonal skills.
• Proficiency with engineering and project management software (e.g., Deswik or other CAD software, MS Project, Primavera).
• Ability to travel domestically and internationally as needed.

Pay range and compensation package

Compensation details will be discussed during the interview process.

Equal Opportunity Statement

We are committed to diversity and inclusivity in our hiring practices and encourage applications from all qualified individuals.