Lead Thermal Simulation Engineer Jobs

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Senior Software Engineer Job Overview: Responsible for the analysis, design, development, testing, and delivery of secure, scalable software solutions. Define requirements for new applications and customization adhering to Mastercard standards, processes, and best practices. Develop, customize, and test applications to integrate to Mastercard specifications. Provide leadership, mentoring, and technical training to other team members. Major Accountabilities • Plan, design, architect, and develop secure, scalable, and maintainable technical solutions and alternatives to meet business requirements in adherence with Mastercard standards, processes, and best practices • Lead day-to-day system development and maintenance activities of the team to meet service level agreements (SLAs) and create solutions with a high level of innovation, cost effectiveness, quality, reliability, and faster time to market. • Accountable for the full systems development life cycle including creating high-quality requirements documents, use cases, designs, and other technical artifacts including but not limited to detailed test strategies, performance benchmarking, release rollout and deployment plans, contingency/back-out plans, feasibility studies, cost and time analysis, and detailed estimates. • Design, develop, test, dep

About Us Twitch is the world’s biggest live streaming service, with global communities built around gaming, entertainment, music, sports, cooking, and more. It is where thousands of communities come together for whatever, every day. We’re about community, inside and out. You’ll find coworkers who are eager to team up, collaborate, and smash (or elegantly solve) problems together. We’re on a quest to empower live communities, so if this sounds good to you, see what we’re up to on LinkedIn and X , and discover the projects we’re solving on our Blog . Be sure to explore our Interviewing Guide to learn how to ace our interview process. About the Role Twitch Security Platform builds and operates the technology at the intersection of security, privacy, software engineering, and data engineering. As a Senior Engineering Manager, Security Platform, you will guide a diverse group of software engineers to build critical tools and automation solutions used across Twitch. You will report to the Director of Security, Identity, and Privacy Platforms. You will manage engineers responsible for operating our security data platform handling billions of weekly events, a multi-petabyte data lake, and numerous analysis tools that provide critical data across the organization to support important security programs. You will also lead engineers responsible for writing software to accomplish security at scale through automation, libraries, and services. With this team, you will lead the full software development lifecycle from product discovery, roadmap prioritization, and execution. Programs you support will include Fraud, Service-to-Service Auth, Detection and Incident Response, Vulnerability Management, Engineering Intelligence, and Privacy. You are experienced in software and data engineering, you bring awareness of the industry's cutting edge, and you're passionate about security. If this sounds accurate, come join us! You can work from San Francisc

About Us Twitch is the world’s biggest live streaming service, with global communities built around gaming, entertainment, music, sports, cooking, and more. It is where thousands of communities come together for whatever, every day. We’re about community, inside and out. You’ll find coworkers who are eager to team up, collaborate, and smash (or elegantly solve) problems together. We’re on a quest to empower live communities, so if this sounds good to you, see what we’re up to on LinkedIn and X , and discover the projects we’re solving on our Blog . Be sure to explore our Interviewing Guide to learn how to ace our interview process. About the Role Twitch Security Platform builds and operates the technology at the intersection of security, privacy, software engineering, and data engineering. As a Senior Engineering Manager, Security Platform, you will guide a diverse group of software engineers to build critical tools and automation solutions used across Twitch. You will report to the Director of Security, Identity, and Privacy Platforms. You will manage engineers responsible for operating our security data platform handling billions of weekly events, a multi-petabyte data lake, and numerous analysis tools that provide critical data across the organization to support important security programs. You will also lead engineers responsible for writing software to accomplish security at scale through automation, libraries, and services. With this team, you will lead the full software development lifecycle from product discovery, roadmap prioritization, and execution. Programs you support will include Fraud, Service-to-Service Auth, Detection and Incident Response, Vulnerability Management, Engineering Intelligence, and Privacy. You are experienced in software and data engineering, you bring awareness of the industry's cutting edge, and you're passionate about security. If this sounds accurate, come join us! You can work from San Francisc

About Us Twitch is the world’s biggest live streaming service, with global communities built around gaming, entertainment, music, sports, cooking, and more. It is where thousands of communities come together for whatever, every day. We’re about community, inside and out. You’ll find coworkers who are eager to team up, collaborate, and smash (or elegantly solve) problems together. We’re on a quest to empower live communities, so if this sounds good to you, see what we’re up to on LinkedIn and X , and discover the projects we’re solving on our Blog . Be sure to explore our Interviewing Guide to learn how to ace our interview process. About the Role Twitch Security Platform builds and operates the technology at the intersection of security, privacy, software engineering, and data engineering. As a Senior Engineering Manager, Security Platform, you will guide a diverse group of software engineers to build critical tools and automation solutions used across Twitch. You will report to the Director of Security, Identity, and Privacy Platforms. You will manage engineers responsible for operating our security data platform handling billions of weekly events, a multi-petabyte data lake, and numerous analysis tools that provide critical data across the organization to support important security programs. You will also lead engineers responsible for writing software to accomplish security at scale through automation, libraries, and services. With this team, you will lead the full software development lifecycle from product discovery, roadmap prioritization, and execution. Programs you support will include Fraud, Service-to-Service Auth, Detection and Incident Response, Vulnerability Management, Engineering Intelligence, and Privacy. You are experienced in software and data engineering, you bring awareness of the industry's cutting edge, and you're passionate about security. If this sounds accurate, come join us! You can work from San Francisc

About Us Twitch is the world’s biggest live streaming service, with global communities built around gaming, entertainment, music, sports, cooking, and more. It is where thousands of communities come together for whatever, every day. We’re about community, inside and out. You’ll find coworkers who are eager to team up, collaborate, and smash (or elegantly solve) problems together. We’re on a quest to empower live communities, so if this sounds good to you, see what we’re up to on LinkedIn and X , and discover the projects we’re solving on our Blog . Be sure to explore our Interviewing Guide to learn how to ace our interview process. About the Role Twitch Security Platform builds and operates the technology at the intersection of security, privacy, software engineering, and data engineering. As a Senior Engineering Manager, Security Platform, you will guide a diverse group of software engineers to build critical tools and automation solutions used across Twitch. You will report to the Director of Security, Identity, and Privacy Platforms. You will manage engineers responsible for operating our security data platform handling billions of weekly events, a multi-petabyte data lake, and numerous analysis tools that provide critical data across the organization to support important security programs. You will also lead engineers responsible for writing software to accomplish security at scale through automation, libraries, and services. With this team, you will lead the full software development lifecycle from product discovery, roadmap prioritization, and execution. Programs you support will include Fraud, Service-to-Service Auth, Detection and Incident Response, Vulnerability Management, Engineering Intelligence, and Privacy. You are experienced in software and data engineering, you bring awareness of the industry's cutting edge, and you're passionate about security. If this sounds accurate, come join us! You can work from San Francisc

About Flexport: At Flexport, we believe global trade can move the human race forward. That’s why it’s our mission to make global commerce so easy there will be more of it. We’re shaping the future of a $10T industry with solutions powered by innovative technology and exceptional people. Today, companies of all sizes—from emerging brands to Fortune 500s—use Flexport technology to move more than $19B of merchandise across 112 countries a year. The recent global supply chain crisis has put Flexport center stage as we continue to play a pivotal role in how goods move around the world. We are proud to have the support of the best investors in the game who believe in our mission, solutions and people. Ready to tackle global challenges that impact business, society, and the environment? Come join us. The opportunity: As Flexport opens its doors in Brazil, we're looking for an Account Manager to help lead client growth in one of the most important markets in our LATAM expansion. You’ll be part of the initial cohort of local hires building Flexport’s presence in the country. Flexport moves more than $175B in goods for over 13,000 clients across 135 countries, and this role gives you the opportunity to bring that scale to Brazil, building relationships with some of the world's largest brands as they navigate a market that's just getting started for us. You'll work cross-functionally with Sales, Operations, Trade Advisory, Customs, and Procurement, both locally and across our global network, to build client strategies that grow the São Paulo book of business from the ground up. This is a role for someone who wants to do more than manage renewals. You'll define what account management looks like in Brazil: building the relationships with local clients, the account plans, and the playbooks other markets will follow as we scale. You'll partner with our global sales teams in the US, Europe, and APAC to open doors, grow share of wallet with existing global accounts oper

At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. About the Engineering team The Engineering team builds systems that power Affirm’s mission. We take pride in our craft, building reliable, performant, and scalable solutions that touch every part of the business. Whether we’re enabling new ways to pay, ensuring our platforms can scale to the most demanding levels in the industry, or developing seamless servicing experiences, our focus is on solving complex problems through exceptional engineering. About the role The Trust and Safety Foundations team within Checkout Engineering builds and operates foundational systems and data capabilities that support how Affirm understands consumer risk and meets its credit reporting obligations. Our work sits at the intersection of data quality, system reliability, regulatory requirements, and risk, creating critical infrastructure that Affirm and its partners depend on to operate accurately and at scale. As a Staff Software Engineer on Trust and Safety Foundations, you will help shape the team’s technical strategy and lead complex, business-critical initiatives across systems and stakeholders. You’ll turn ambiguous problems into clear technical approaches, guide projects from strategy through execution, and strengthen the reliability and sustainability of the systems we own. You’ll also act as a force multiplier by raising the bar for system design and engineering quality, sharing your expertise, and helping other engineers grow. This role requires strong technical judgment, deep ownership, and the ability to navigate complexity in a high-impact domain. . What you’ll do You will be responsible for setting technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects. You will collaborate across teams in the product developm

At Affirm, we exist for the moments that matter—giving people a clear, predictable way to pay over time, with no hidden fees, no surprises, and no tradeoffs on what matters most. About the Engineering team The Engineering team builds systems that power Affirm’s mission. We take pride in our craft, building reliable, performant, and scalable solutions that touch every part of the business. Whether we’re enabling new ways to pay, ensuring our platforms can scale to the most demanding levels in the industry, or developing seamless servicing experiences, our focus is on solving complex problems through exceptional engineering. About the role The Trust and Safety Foundations team within Checkout Engineering builds and operates foundational systems and data capabilities that support how Affirm understands consumer risk and meets its credit reporting obligations. Our work sits at the intersection of data quality, system reliability, regulatory requirements, and risk, creating critical infrastructure that Affirm and its partners depend on to operate accurately and at scale. As a Staff Software Engineer on Trust and Safety Foundations, you will help shape the team’s technical strategy and lead complex, business-critical initiatives across systems and stakeholders. You’ll turn ambiguous problems into clear technical approaches, guide projects from strategy through execution, and strengthen the reliability and sustainability of the systems we own. You’ll also act as a force multiplier by raising the bar for system design and engineering quality, sharing your expertise, and helping other engineers grow. This role requires strong technical judgment, deep ownership, and the ability to navigate complexity in a high-impact domain. . What you’ll do You will be responsible for setting technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects. You will collaborate across teams in the product developm

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. The Payments and Wallet team owns how money moves on Roblox starting with how players pay in, ending with how developers get paid out, and the wallet infrastructure that connects the two. Consumer facing payments are also the high impact area for driving revenue growth for the company. As Director of Product for Payments and Wallet, you will own this business end to end: setting the long-term strategy, standing up new banking and wallet products from zero users to all developers, and running the P&L for a meaningful revenue line at Roblox. You will lead a team of product managers and partner closely with Engineering, Finance, Legal, Risk, and Business Development to build payment and wallet products that work at global scale. This is a builder's role for someone who has taken a financial product from an idea to a business and wants to do it again on one of the largest user-generated platforms in the world. This role is based in San Mateo, CA (hybrid with Tues-Thurs in office) and reports to the Sr. Director Product, Monetization and Payments. You will: Own the end-to-end product strategy and roadmap for Payments and Wallet, spanning consumer payment methods, developer and creator payout

Ready to do the most impactful work of your career? At Coinbase , we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people who refuse to settle for "good enough," you belong here. Coinbase is a remote-first, but not remote-only company. Expect to get together quarterly for intense in-person working sessions called “surges.” learn more about working at Coinbase . Staff Software Engineer, Fullstack - Finance Engineering Platform (L6) As a Staff Software Engineer on the Finance Engineering Platform team within the Platform group, you'll own the frontend technical direction for the systems that transform trading, payment, and transfer activity into accurate financial records. This team builds the internal control plane where Finance and Accounting teams monitor financial health, investigate reconciliation breaks, and take governed action. You'll turn ambiguous operational problems into cohesive, scalable user experiences and establish the patterns that enable Finance to operate with greater speed, accuracy, and confidence. What you'll do: Own the frontend technical strategy and architecture for financial reconciliation and operations products, including React and TypeScript applications for high-volume financial data, tables, filtering, visualizations, and transaction-level investigation. Lead the design of auditable human-in-the-loop workflows covering validation, approval states, error handling, permissions, and review history. Define end-to-end contracts with backend and API teams so that new data capabilities become reliable, understandable product features. Establish best practices for frontend quality across testing, accessibility, performance, observability, feature management, and safe rollout. Drive the most ambiguous a

Replit is the agentic software creation platform that enables anyone to build applications using natural language. With millions of users worldwide, Replit is democratizing software development by removing traditional barriers to application creation. About the role: Help turn “I built a business” into “I have customers.” As a Staff Software Engineer on Replit’s Money team, you’ll help shape Agentic Ads: an emerging area focused on using AI to make customer acquisition more accessible to businesses built on Replit. This role focuses on intelligent, advertiser-facing software—not ad-serving infrastructure, an ad exchange, or a real-time bidding engine. You’ll tackle problems at the intersection of AI, business growth, measurement, and trustworthy automation, turning complex decisions into clear, useful experiences. You’ll help define a new product area, working closely with product, design, and engineering to discover customer needs and deliver practical solutions. This is a hands-on Staff role: you’ll own architecture, lead delivery across teams, mentor engineers, and turn an ambitious vision into incremental customer value. You will: Set technical direction for Agentic Ads, translating customer needs into an architecture and roadmap that balance rapid learning with long-term reliability. Build agent-powered experiences that help businesses make informed growth decisions, translating user goals into understandable recommendations and appropriately authorized actions. Design extensible integrations with external services, using well-defined APIs and abstractions that accommodate changing provider capabilities and requirements. Partner with product and data teams to establish reliable measurement, connect product activity to business outcomes, and address data quality, delayed feedback, and uncertainty. Develop intelligent automation that learns from performance signals and helps users improve outcomes within their goals and constraints. Make financial control a produ

Ready to do the most impactful work of your career? At Coinbase , we are uncompromising on our mission to increase economic freedom. The bar is high, the environment is intense, and we like it that way. This isn't a place for complacency, it’s a place to be pushed past your perceived limits. If you're ready to build the future of finance alongside people who refuse to settle for "good enough," you belong here. Coinbase is a remote-first, but not remote-only company. Expect to get together quarterly for intense in-person working sessions called “surges.” learn more about working at Coinbase . Team/ Role Paragraph: FinHub owns how money moves at Coinbase. Every dollar and token that enters, leaves, or moves within the company runs through this platform - fiat across ACH, wires, cards, RTP, and SEPA, crypto across dozens of blockchain networks, and internal movement across ledgers, legal entities, and customer accounts. As a Group Product Manager on the FinHub team within Platform , you'll own the systems that ensure every fund flow reaches a correct terminal state - the controls that stop unsafe movement, the detection that catches what slips through, and the remediation that recovers it. You'll set the reliability standard for money movement at Coinbase and lead through influence to hold the company to it. What you’ll do: Own the multi-year vision and strategy for money movement reliability and controls across fiat and crypto, defining per-rail service levels and resolution targets for every fund flow. Build the controls infrastructure governing money movement - determining which risk, compliance, and financial controls apply to each flow, verifying they ran, and confirming they passed before funds move. Drive real-time detection and end-to-end tracing across payment rails, blockchain networks, controls, and the ledger to identify and resolve failures fast. Scale correctness through AI agents that propose controls from product specs, tr

About Hark Hark is an artificial intelligence company building advanced, personalized intelligence. One that is proactive, multimodal, and capable of interacting with the world through speech, text, vision, and persistent memory. We're pairing that intelligence with next-generation hardware to create a universal interface between humans and machines. While today's AI largely operates through chat boxes and decade-old devices, Hark is focused on what comes next: agentic systems that interact naturally with people and the real world. To get there, we're developing multimodal models and next-generation AI hardware together - designed from the ground up as a single, unified interface for a new era of intelligent systems. About the Role Hark is an artificial intelligence company building advanced, personalized intelligence. One that is proactive, multimodal, and capable of interacting with the world through speech, text, vision, and persistent memory. We are pairing that intelligence with next-generation hardware to create a universal interface between humans and machines. Rather than focusing on a single layer of the AI stack, we are building foundation models, software systems, and native hardware together from the start. Responsibilities End-to-End Certification: Lead global carrier and regulatory certification programs (including FCC, ISED, CE RED, UKCA, PTCRB, and GCF) from early product definition through commercial launch. Regulatory Compliance: Manage launch readiness for wireless, safety, EMC, RF exposure, SAR/MPE, and country-specific type approvals. Strategic Partner Engagement: Build and manage technical relationships with global mobile carriers, test labs, certification bodies, and chipset vendors to understand test plans and drive lab/field testing. Cross-Functional Execution: Partner closely with hardware, software, RF, modem, QA, and product teams to triage testing issues, close certification blockers, and ensure commercial launch readiness. Market

Employee Applicant Privacy Notice Who we are: Shape a brighter financial future with us. Together with our members, we’re changing the way people think about and interact with personal finance. We’re a next-generation financial services company and national bank using innovative, mobile-first technology to help our millions of members reach their goals. The industry is going through an unprecedented transformation, and we’re at the forefront. We’re proud to come to work every day knowing that what we do has a direct impact on people’s lives, with our core values guiding us every step of the way. Join us to invest in yourself, your career, and the financial world. The role: SoFi is seeking an energetic, organized, and resourceful Direct Mail Marketing Manager for a one-year contract to manage the end-to-end direct mail creative process for the SoFi Credit Card product, from strategy and planning through creative development, stakeholder review, approval, production, and tracking. This role will also analyze campaign performance and provide recommendations to optimize future direct mail strategies and creative. At SoFi, you’ll become part of a new kind of finance company whose ambition is to help our members achieve financial independence and reach their goals. We aim to be at the center of our members’ financial lives and help every member get their money right. We created student loan refinancing, addressing the biggest financial challenge of a new generation through a modern approach to lending and personal finance. Next, we expanded our products and services across loans, investing, and cash management. SoFi has achieved significant growth, with ambitious plans ahead, but to continue this growth, we need great talent. And that starts with you. What you’ll do: This role owns four core areas of responsibility: 1. Creative Strategy & Planning Lead end-to-end creative strategy and execution for Credit Card direct mail campaigns, partnering with Product Marke

About Us Twitch is the world’s biggest live streaming service, with global communities built around gaming, entertainment, music, sports, cooking, and more. It is where thousands of communities come together for whatever, every day. We’re about community, inside and out. You’ll find coworkers who are eager to team up, collaborate, and smash (or elegantly solve) problems together. We’re on a quest to empower live communities, so if this sounds good to you, see what we’re up to on LinkedIn and X , and discover the projects we’re solving on our Blog . Be sure to explore our Interviewing Guide to learn how to ace our interview process. About the Role Twitch is looking for a Director, Head of Product Marketing to build, lead, and elevate our global PMM function from the ground up. Reporting directly to the Chief Marketing Officer (CMO), your mandate is to establish Product Marketing as a proactive, high-velocity marketing engine and strategic driver. In this role, you will define the core value proposition of Twitch’s product ecosystem for creators and viewers alike. You will act as the crucial connective tissue between Marketing and teams across Product, Engineering, Data Science, Commerce and the broader Go-To-Market teams. You understand that the best marketing on a platform feels like a feature, not a bug. You’ll build systems that move beyond one-off "launch day hype,” anchoring your strategy in continuous lifecycle adoption and creator unit economics. You’ll ensure that our community understands the deep why behind our tools before the what even ships. You can work in San Francisco, CA; Irvine, CA; New York, NY; or Seattle, WA. You Will: Architect the Global PMM Discipline: Lead, coach, and scale a world-class team of product marketers, establishing operational rigor, written strategy briefs and clear accountability loops that prioritize high-impact bets over busywork. Define the Value Tra