Principal Senior Mobile Engineer Jobs

Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy. Your mission is to lead the architectural design, technical execution, and implementation of AI agents and infrastructure for Toast's Team area within our FinTech line of business. The Team area is a mission-critical space on which our restaurants rely to manage their staff and optimize their labor. As a Principal Engineer, you will serve as a key technical leader in the group, driving modern architectural patterns—including spec-driven development and agentic workflows—to deliver high-impact software. A Day in the Life (Responsibilities) Define and execute the technical architecture for AI agents within the Team domain, ensuring systems are scalable, reliable, and secure. Partner closely with Engineering Managers and Product Managers to translate product roadmaps into robust technical designs and deliverables. Maintain a strong hands-on presence, writing code, prototyping new patterns, and resolving complex technical bottlenecks under load. Collaborate with Principal and Senior Principal Engineers across Toast to align on best practices, agent patterns, and spec-driven development paradigms. Guide, mentor, and elevate engineers within the Team area, fostering a culture of technical excellence and continuous learning. What You'll Need to Thrive (Requirements) 10+ years of experience designing, building, and operating highly scalable, mission-critical distributed systems and SaaS products (ideally AWS-hosted). Proven track record of leading complex technical initiatives and delivering robust software architecture from design to production. Strong enthusiasm for agentic development practices, LLM integration, and modern software paradigms. Balanced expertise: Ability to design high-level technical solutions on a whiteboard while remaining deeply connected to code-level execution and s

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. Experience LiveOps builds the runtime tools creators use to operate and tune their live experiences — without shipping a code release. Our surfaces include Remote Configs (targeted, scheduled, and AI-assisted configuration), A/B Experimentation with real metrics and early harm detection, audience Segmentation , and Open Cloud / public APIs that expose all of it programmatically. As a Software Engineer on the team, you’ll work full-stack — across our backend services and the creator-hub web app (TypeScript/React) — to ship features that let every creator run live-ops the way large studios do: safely, and at platform scale. You’ll own meaningful pieces from day one and work closely with senior and principal engineers, our PM, and design. Join us and give the entire creator community live-ops superpowers. You Will: Build and ship features across ELO’s config, experimentation, and segmentation surfaces — backend services and the creator-hub UI. Own projects end-to-end (spec → launch) with support from senior/principal engineers on the team. Partner with PM, design, DSA/Discovery, and Data Platform to deliver high-quality, w

Our vision is to transform how the world uses information to enrich life for all. Join an inclusive team passionate about one thing: using their expertise in the relentless pursuit of innovation for customers and partners. The solutions we build help make everything from virtual reality experiences to breakthroughs in neural networks possible. We do it all while committing to integrity, sustainability, and giving back to our communities. Because doing so can fuel the very innovation we are pursuing. As a NAND Cell Device Senior/Principal Engineer in the Singapore Device Technology Development group of Micron Technology Inc., you will perform electrical characterization of advanced 3D NAND memory cells and develop novel device solutions for next‑generation non‑volatile memory technologies. Scope and responsibilities will align with experience level. Responsibilities Characterize NAND memory cell and array behavior to identify device improvement opportunities. Develop an understanding of performance and reliability requirements for new NAND cells and help refine specifications. Analyze automated tester data to identify qualification gaps, new device corners, and screening improvements. Contribute to NAND cell architecture and process definition through device physics and array operation expertise. Collaborate with process, integration, product, and design teams to address cell challenges and deliver improvement roadmaps. Qualifications M.S. or Ph.D. in Electrical Engineering, Physics, Materials Science , or a related field. Strong foundation in semiconductor device physics and fabrication processes . Experience w

Who we are At Twilio, we’re shaping the future of communications, all from the comfort of our homes. We deliver innovative solutions to hundreds of thousands of businesses and empower millions of developers worldwide to craft personalized customer experiences. Our dedication to remote-first work , and strong culture of connection and global inclusion means that no matter your location, you’re part of a vibrant team with diverse experiences making a global impact each day. As we continue to revolutionize how the world interacts, we’re acquiring new skills and experiences that make work feel truly rewarding. Your career at Twilio is in your hands. . Hiring and how we work We use Artificial Intelligence (AI) to help make our hiring process efficient. That said, every hiring decision is made by real Twilions! Also, while we are a remote-first company, you may be asked to report in person on an ad-hoc basis for team gatherings, functional off-sites or customer meetings. . See yourself at Twilio Join the team as Twilio’s next Principal Product Manager for the Channels email team. About the job Twilio is looking for a Senior Principal, Product Management to deliver our strategic vision for the Developer Platform . You will manage foundational services, APIs, and infrastructure, driving the roadmap that empowers internal teams and partners to scale confidently. You will treat the platform as a product , shifting platform engineering from reactive, ad-hoc support into proactive, self-service experiences. Grounded in industry research (DORA, CNCF, Team Topologies, etc..), you will introduce golden paths, a discoverable developer portal, self-service tools, and high-quality documentation to reduce cognitive load and support burdens across Twilio. Collaborating with product leaders, engineering, architecture, and design, you will define the future of developer experience, tooling, deployment, and operational capabilities, acting as the stewa

Lead AI Engineer (Senior/Principal Consultant) Location: London (Hybrid) | Practice Area : Technology & Engineering | Type: Permanent Empower the next frontier of AI with Capco. Shape, build, and deliver future-ready generative systems. The Role We’re looking for a Lead AI Engineer (Senior/Principal Consultant) to join our Technology Delivery Team. You’ll combine your expertise in AI/ML engineering and software development to build and deploy cutting-edge generative AI and agentic systems across the financial services sector. As a hands-on leader, you’ll architect AI solutions, embed them within enterprise environments, and drive impactful outcomes through advanced engineering, scalable pipelines, and deep cross-functional collaboration. What You’ll Do Architect and develop autonomous AI systems integrating multi-modal LLMs (text, image, audio, video) Design agentic workflows enabling AI agents to interact with data sources and APIs using prompt engineering and RAG Fine-tune, optimize, and deploy large language and multi-modal models with a focus on performance and latency Build scalable MLOps pipelines and full-stack applications to support robust, production-grade AI deployments Guide multidisciplinary teams and clients through strategic decisions in AI engineering and GenAI adoption What We’re Looking For Bachelor’s degree or higher in Computer Science, AI, or related STEM fields Hands-on experience deploying LLMs and multi-modal models at scale Strong engineering background in Python with proven backend and API development skills Solid understanding of scalable MLOps, observability, and cloud-native AI deployment Excellent communication, problem-solving, and project management skills in agile environments Bonus Points For Experience with agentic frameworks (e.g., LangChain, LlamaIndex) Experience in deep learning frameworks and front-end development Familiarity with Langfuse, Langsmith, or other LLM observability tools Understanding of Model Context Protocol

Brief Description of the Organization Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Our mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. We strive to earn and maintain our clients’ and the public’s trust by constantly adhering to the highest ethical standards and making a positive impact on the communities we serve. Citi’s Personal Banking and Wealth Management (PBWM) division is building a purpose-driven team to serve its globally diverse, digitally forward customers in top cities around the world. We’re looking for exceptional candidates who think digitally and differently, resolve problems in unconventional ways and strive to provide a remarkable experience for our clients. We define success by our Citi Leadership Principles: We Take Ownership, We Deliver with Pride and We Succeed Together. Overview of the Role The Head of USCC Personal Loans Core Platforms and Lending Integrations is accountable for the execution and delivery of next-generation API integration platforms across value proposition, lending, and commerce ecosystems. This role owns a critical engineering function responsible for building scalable, secure, and compliant integration platforms that support Value Cards, Lending and Commerce business in USCC. The individual applies deep technical expertise and strong business understanding to translate strategic priorities into enterprise-grade API integration solutions. This is a highly technical leadership role, requiring the individual to actively drive architecture, influence low-level design, and guide implementation through principal and senior engineers. The role is expected to set engineering standards, define technical guardrails, and contribute hands-on where required, including the ability to review, prot

We anticipate the application window for this opening will close on - 30 Oct 2026 Careers that change lives start here. Medtronic is a global leader in healthcare technology with a Mission to alleviate pain, restore health, and extend life. Our 95,000 employees work across more than 150 countries to put patients first — developing innovative medical technologies that improve the lives of 72+ million patients each year. Your unique talents will help shape the future of healthcare while building a career grounded in purpose, growth, and impact. A Day in the Life Make an impact where it matters most. At Medtronic Peripheral Vascular, you'll support cutting-edge therapies that help treat peripheral arterial and venous disease, carotid disease, and arteriovenous access conditions. Working alongside physicians and healthcare teams, you'll provide clinical expertise, support complex procedures, and help expand access to innovative therapies that improve patient lives every day. The Senior Principal Vascular Clinical Specialist role will provide detailed technical support for vascular products and procedures to a wide range of clinical professionals. This individual will support sales representatives with coverage for critical cases, primarily focused on cases with physicians that require technical support on the safe and effective use of our products. Vascular Clinical Specialists must be able to work and/or travel outside of standard business hours to support occasional urgent patient cases, complex procedures, and customer needs, including limited evening and weekend coverag

We anticipate the application window for this opening will close on - 28 Sep 2026 Careers that change lives start here. Medtronic is a global leader in healthcare technology with a Mission to alleviate pain, restore health, and extend life. Our 95,000 employees work across more than 150 countries to put patients first — developing innovative medical technologies that improve the lives of 72+ million patients each year. Your unique talents will help shape the future of healthcare while building a career grounded in purpose, growth, and impact. A Day in the Life Make an impact where it matters most. At Medtronic Peripheral Vascular, you'll support cutting-edge therapies that help treat peripheral arterial and venous disease, carotid disease, and arteriovenous access conditions. Working alongside physicians and healthcare teams, you'll provide clinical expertise, support complex procedures, and help expand access to innovative therapies that improve patient lives every day. The Senior Principal Vascular Clinical Specialist role will provide detailed technical support for vascular products and procedures to a wide range of clinical professionals. This individual will support sales representatives with coverage for critical cases, primarily focused on cases with physicians that require technical support on the safe and effective use of our products. Vascular Clinical Specialists must be able to work and/or travel outside of standard business hours to support occasional urgent patient cases, complex procedures, and customer needs, including limited evening and weekend coverage. Territory for this role: Salt Lake City/Boise. Candidate

We anticipate the application window for this opening will close on - 28 Sep 2026 Careers that change lives start here. Medtronic is a global leader in healthcare technology with a Mission to alleviate pain, restore health, and extend life. Our 95,000 employees work across more than 150 countries to put patients first — developing innovative medical technologies that improve the lives of 72+ million patients each year. Your unique talents will help shape the future of healthcare while building a career grounded in purpose, growth, and impact. A Day in the Life Make an impact where it matters most. At Medtronic Peripheral Vascular, you'll support cutting-edge therapies that help treat peripheral arterial and venous disease, carotid disease, and arteriovenous access conditions. Working alongside physicians and healthcare teams, you'll provide clinical expertise, support complex procedures, and help expand access to innovative therapies that improve patient lives every day. The Senior Principal Vascular Clinical Specialist role will provide detailed technical support for vascular products and procedures to a wide range of clinical professionals. This individual will support sales representatives with coverage for critical cases, primarily focused on cases with physicians that require technical support on the safe and effective use of our products. Vascular Clinical Specialists must be able to work and/or travel outside of standard business hours to support occasional urgent patient cases, complex procedures, and customer needs, including limited evening and weekend coverage. Territory for this role: Wichita/Springfield/Joplin. Can

We anticipate the application window for this opening will close on - 26 Oct 2026 Careers that change lives start here. Medtronic is a global leader in healthcare technology with a Mission to alleviate pain, restore health, and extend life. Our 95,000 employees work across more than 150 countries to put patients first — developing innovative medical technologies that improve the lives of 72+ million patients each year. Your unique talents will help shape the future of healthcare while building a career grounded in purpose, growth, and impact. A Day in the Life At Medtronic Neuroscience, we bring innovation, expertise, and purpose together to improve outcomes and transform lives for people living with neurological, spine, and chronic pain conditions. At Medtronic CST, we bring together innovative technologies that empower surgeons and improve outcomes in complex spine and cranial procedures. Check us out on LinkedIn: Medtronic CST . This role supports the research and development of next-generation electromagnetic navigation technologies and other strategic programs. The team applies electromagnetic theory, physics-based modeling, sensing technologies, signal processing, and system-level design to improve the accuracy, reliability, and performance of navigation solutions used in clinical applications. The position works closely with cross-functional engineering teams from concept development through prototype validation and transfer into product development. The Senior Principal Scientist will apply electromagnetic theory, system modeling, and engine

DRW est une société de négoce diversifiée avec plus de 3 décennies d'expérience qui réunit une technologie sophistiquée et des personnes exceptionnelles pour opérer sur les marchés du monde entier. Nous valorisons l'autonomie et la capacité à pivoter rapidement pour saisir les opportunités, c'est pourquoi nous opérons en utilisant notre propre capital et en négociant à nos propres risques. Basée à Chicago et disposant de bureaux aux États-Unis, au Canada, en Europe et en Asie, nous négocions diverses catégories d'actifs, notamment les titres à revenu fixe, les FNB, les actions, les devises, les matières premières et l'énergie sur les principaux marchés mondiaux. Nous avons également tiré parti de notre expertise et de notre technologie pour nous développer dans trois stratégies non traditionnelles : l'immobilier, le capital-risque et les crypto-actifs. Nous opérons avec respect, curiosité et ouverture d'esprit. Les personnes qui s'épanouissent ici partagent notre conviction que ce n'est pas seulement ce que nous faisons qui compte - c'est la façon dont nous le faisons. DRW est un lieu d'attentes élevées, d'intégrité, d'innovation et de volonté de remettre en question le consensus. L'équipe : Alors que les outils d'IA générent une valeur immense à travers l'entreprise, notre organisation fait face à un « Double mandat » : fournir un accès simplifié aux meilleurs outils d'IA d'avant-garde tout en gérant strictement une courbe des coûts en croissance exponentielle. L'équipe unifiée de la Plateforme IA construit les couches logicielles, opérationnelles et de gouvernance centralisées qui acheminent de manière sécuritaire les utilisateurs vers les modèles les plus rentables. Le rôle : Nous recherchons un Ingénieur de plateforme pour nous aider à construire et opérationnaliser notre écosystème d'outils IA. En travaillant étroitement avec le Chef d'équipe et les Ingénieurs logiciels Sénior/Principal, vous serez l'intégrateur pratique reliant les fournisseurs infonuagiques d

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. As a Software Engineer on the Creator, Experience LiveOps team, you'll work full-stack across our backend services and the creator-hub web app (TypeScript/React) to ship features that let every creator run live-ops the way large studios do: safely, and at platform scale. You'll own meaningful pieces from day one and work closely with senior and principal engineers, our PM, and design. Join us and give the entire creator community live-ops superpowers. The Experience LiveOps (ELO) Team builds the runtime tools creators use to operate and tune their live experiences without shipping a code release. Our surfaces include Remote Configs (targeted, scheduled, and AI-assisted configuration), A/B Experimentation with real metrics and early harm detection, audience Segmentation, and Open Cloud / public APIs that expose all of it programmatically. You Will: Build and ship features across ELO's config, experimentation, and segmentation surfaces, backend services and the creator-hub UI. Own projects end-to-end (spec to launch) with support from senior/principal engineers on the team. Partner with PM, design, DSA/Discovery, and Data Platform to deliver high-quality, well-instrumented features. Par

Role Overview We are seeking an experienced Capital Markets Consultant to support business transformation, regulatory change, and technology implementation initiatives across capital markets. The candidate will work closely with business stakeholders, front-, middle-, and back-office teams, technology teams, and external partners to deliver solutions that improve operational efficiency, strengthen risk management, and enhance trading and post-trade processes. The ideal candidate is a capital markets professional with 6–8 years of experience who combines strong financial services domain knowledge with consulting, business analysis, and project delivery capabilities. The candidate should be comfortable engaging with stakeholders, analysing complex business processes, translating requirements into practical solutions, and driving deliverables across multidisciplinary teams. Key Responsibilities Capital Markets Domain Expertise Demonstrate strong understanding of capital markets products, processes, and operating models across equities, fixed income, foreign exchange, derivatives, and structured products. Understand the trade lifecycle, including trade execution, confirmation, clearing, settlement, collateral management, and reconciliations. Work across front-office, middle-office, and back-office functions, depending on project requirements. Understand market infrastructure, including exchanges, central counterparties (CCPs), central securities depositories (CSDs), and custodians. Support initiatives involving trading platforms, order management systems (OMS), execution management systems (EMS), and post-trade processing platforms. Business Analysis and Consulting Engage with business stakeholders to understand business needs, pain points, and operational challenges. Conduct workshops, stakeholder interviews, process assessments, and gap analyses. Translate business needs into business requirements documents (BRDs), functional specifications, user stories, and ac

Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. 【募集職種/Position Title】 Senior / Staff / Principal Process Development Engineer 【日本語】 MicronのDRAM Technology Development Process Development Teamは、MicronのDRAMおよびHBM (High Bandwidth Memory) 製品向けのプロセス技術、装置ソリューションを開発する、世界最高水準のエンジニアと技術専門家で構成された組織です。 当チームでは、先端DRAM、HBM、およびCMOS技術の開発を推進しており、リソグラフィ、CVD、ドライエッチ、ウェットプロセス、メタライゼーション、拡散、イオン注入、CMP、先端材料開発など、幅広いプロセス分野で経験豊富な人材を募集しています。 本ポジションでは、ユニットプロセス技術の探索、開発、最適化を担当し、プロセスインテグレーション、デバイス、設計エンジニアと連携しながら、装置メーカーや材料サプライヤーと協働して、次世代のDRAMおよびHBM向けの高性能かつコスト競争力のある技術開発を推進していただきます。 本ポジションでは、半導体プロセス開発、デバイス物理、CMOS技術に関する高度な知識が求められます。また、データ解析能力や材料分析、表面解析技術への理解も重要です。チームワークと高いコミュニケーション能力は、本職務で成功するための重要な要素となります。 歓迎する技術経験 以下の技術分野における実務経験をお持ちの方を歓迎します。 ・成膜技術 (CVD、ALD、PVD) ・エピタキシャル成長技術 (Si、SiGe、選択成長など) ・ゲートスタックおよび誘電体技術 ・先端パターニングおよびドライエッチ技術 ・ウェット洗浄および表面処理技術 ・イオン注入および熱処理技術 ・コンタクト形成、配線メタライゼーション技術 ・化学機械研磨技術 (CMP) ・ストレスエンジニアリングおよび先端材料統合技術 ・先端トランジスタ開発を含むロジック技術開発 ・メモリCMOSおよび周辺回路向けプロセスインテグレーション技術 主な職務内容 以下を含みますが、これらに限定されません。 ・デバイス、プロセスインテグレーション、および製品要求事項の理解 ・技術目標およびコスト目標達成に向けたプロセス技術ロードマップおよびサプライヤー戦略の策定 ・開発環境および量産環境におけるプロセスレシピの開発、最適化 ・構造解析、材料分析、および電気特性評価データの解析 ・デバイス性能、歩留まり、信頼性、およびコスト競争力向上に向けた技術革新の推進 ・AI（人工知能）を活用した開発業務の効率化、高度化の推進 ・社内関係部門および外部パートナーとの連携による複雑な技術課題の解決 ・技術戦略および開発方針に関する経営層への提言 ・エンジニアの育成、指導を通じた組織能力の向上 ・高い倫理観、オーナーシップ、および他者への敬意を持った業務遂行 応募資格（必須） ・電気工学、物理学、化学工

Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. ROLE Lead first-silicon bring-up, characterization, debug, and validation of advanced 3D NAND products. Establish whether silicon meets design intent and datasheet requirements, correlate simulation with measurements, and resolve issues that could affect product qualification, reliability, yield, or SSD/system integration. This role provides a unique opportunity to develop end-to-end expertise across advanced NAND products, spanning circuit design concepts, mixed-signal simulations, first-silicon bring-up, silicon debug, product qualification, and manufacturing readiness. Engineers gain broad exposure to analog, mixed-signal, digital, firmware, memory-array, and system-level behavior while working closely with design, verification, firmware, product, and system teams. RESPONSIBILITIES • Own validation strategies, coverage, and test plans for assigned NAND circuits and functions; define expected behavior, operating corners, and pass/fail criteria from product specifications and design intent. • Lead first-silicon bring-up, characterization, debug, and simulation-to-silicon correlation across voltage, temperature, process, timing, and workload conditions. • Characterize and debug NAND subsystems including reference and bias generation circuits, bandgap references, oscillators, voltage regulators, charge pumps, sensing and page-buffer paths, high-voltage program/er