Cx Specialist Jobs

Sendbird is on a mission to build the AI workforce of tomorrow. Sendbird is the omnichannel AI agent platform enterprises choose to elevate the customer experience by initiating autonomous support & sales conversations, keeping humans in the loop for complex inquiries, and re-engaging customers with proactive business messages. We are the omnichannel AI agent platform that enterprises choose to elevate customer experience. Trusted by 4,000+ of the world’s most popular apps—including industry leaders like Match Group, Rakuten, Yahoo, and Coupang—Sendbird powers over 7 billion messages every month. The Sendbird Revenue Operations team is looking for a Head of Marketing Operations. The Revenue Operations team brings together Marketing Operations, Sales Operations, CX Operations, and Data Insights — together, we own the processes, systems, and analytics that power the entire lead-to-cash cycle. It's a fast-moving, high-impact function, and this role is central to how we grow. Reporting to our Head of Revenue Operations, you'll own the monitoring and enablement of lead and pipeline delivery. We're looking for someone who really gets marketing — someone who can build the systems, processes, and workflows that help our marketing efforts thrive and scale. This role is based in our San Mateo, California office, with the team on-site Monday, Wednesday, and Thursday each week (3+ days). This is an IC role that owns the function, the strategy, and vendor relationships. You'll be joining a team that moves with urgency, thinks in data, sweats the details, and is genuinely energized by building a high-quality pipeline for Sales. If that sounds like your kind of environment, we'd love to talk! What you will do: Lead our Marketing Operations efforts, and be a partner to the Head of Demand Generation and our Marketing stakeholders. Manage our external MOps agency that executes our Campaign Operations. Platform and Systems Ownership Own the Marketing technology stack a

Secure Every Identity, from AI to Human Identity is the key to unlocking the potential of AI. Okta secures AI by building the trusted, neutral infrastructure that enables organizations to safely embrace this new era. This work requires a relentless drive to solve complex challenges with real-world stakes. We are looking for builders and owners who operate with speed and urgency and execute with excellence. This is an opportunity to do career-defining work. We're all in on this mission. If you are too, let's talk. The Senior Manager, Customer First Operations, EMEA will play a pivotal role in shaping and scaling our rapidly growing EMEA Customer First organisation. Sitting within our EMEA GTM Operations team, working closely with the Global CX Operations team, this role acts as the primary operational partner for the EMEA VP of Customer First and other senior CX leadership. You will be responsible for establishing and implementing operations rigour and standards for the CX team, spanning Customer Success and Technical Account Management (TAM), while working closely with adjacent teams including Renewals, Support, and Professional Services. In this role, you will design, refine, and continuously optimise our Management Systems, bridging the gap between corporate strategy and regional execution to maximise Net Revenue Retention (NRR). We are looking for an experienced, highly collaborative candidate with a growth mindset, exceptional analytical skills, and an appetite for constant improvement. You will be tasked with integrating the customer journey from sales through to customer success, ensuring that global and local standards are consistently adhered to and operate in support of our aggressive growth targets. Job Duties and Responsibilities: Be a trusted operational guardrail: Partner deeply with Global Operations to define and maintain strict consistency across processes, preventing regional drift or siloed operations while ensuring global standards support E

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 . As a Software Engineer on the CX Shared Agent Platforms and SFDC Solutions team, you'll build and extend the platforms that power customer service and compliance operations across Coinbase. This team, part of the Enterprise Applications and Architecture org, owns CX tooling including Salesforce, Maestro QA, and Assembled, enabling agents to resolve customer issues and manage KYC workflows with speed and accuracy. You'll develop full-stack services and integrations that drive agent productivity, support strategic platform transitions, and deliver impact at scale from Brazil. What you'll do: Build and ship backend services using Golang and gRPC that extend CX platform capabilities and support agent workflows across compliance and consumer teams. Own the evaluation, integration, and ongoing support of third-party SaaS platforms, ensuring seamless connectivity across the CX tooling ecosystem. Partner with product, design, security, and data teams to deliver cross-functional solutions to complex operational and compliance challenges. Drive engineering best practices across the team, including code reviews, testing strategies, deployment processes, and observability standards (metrics, logging, tracing). Translate complex technical concepts into clear recommendations for non-technical stakeholders across CX, product, and leadership teams. Required Skills and Experience: 5+

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 . The CX Intelligence team is part of Coinbase’s Enterprise Applications and Architecture org and builds the customer-facing and internal CX experiences that connect the Help Center, chatbots (CBCB), and agent workflows. The team owns the multi-agent platform that powers Coinbase chat, Help Center, and agent tooling, partnering closely with Conversation Design, CX, and engineering teams to deliver secure, compliant, and scalable AI-powered support. Our work helps customers get answers faster while enabling agents to resolve cases more effectively. We are hiring an IC4 Machine Learning Engineer to help evolve our conversational ecosystem by building a seamless hybrid vendor-internal chatbot experience. You will contribute to the design and implementation of a unified orchestration layer that coordinates interactions between vendor AI, internal multi-agent systems, and human participants. This role is ideal for someone who enjoys solving complex ML systems problems, building reliable handoff logic across LLM frameworks, and shipping AI-enabled products that are measurable and scalable. What you'll do: Build and improve the orchestration layer that manages state transitions, context sharing, and intent routing across vendor and internal LLM frameworks in a distributed conversational environment. Develop production-grade Python services that bridge advanced AI and ML capab

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 . We are seeking Capacity Planning Lead to join Coinbase's Consumer (CX) Workforce Management team. This role is central to translating volume trends, staffing assumptions, and business inputs into actionable short- and medium-range capacity plans that help our consumer support operation meet customer demand efficiently and cost-effectively. The ideal candidate brings deep WFM domain expertise, strong analytical fundamentals, and the ability to operate with ownership and precision in a fast-moving, AI-informed planning environment. You'll work at the intersection of forecasting, operations, and cross-functional stakeholder collaboration to ensure CX is always staffed to deliver a high-quality customer experience. What you’ll do: Own forecasts and short-range capacity plans across multiple consumer support queues and markets, translating volume, AHT, and shrinkage trends into staffing requirements and coverage plans Use hybrid human–AI tooling to build and maintain capacity models that reflect the growing complexity of our support channels and workforce structure Create multi-scenario staffing plans that model trade-offs between Customer Experience/Service Levels, Employee Experience, Operational Flexibility, and Cost Effectiveness Partner with vendor management and BPO partners to ensure staffing targets and contractual SLAs are met at the interval level C

WordPress VIP is the world’s leading enterprise content management platform. We help the world’s largest companies—including Meta, Salesforce, and Disney—create innovative digital experiences with WordPress. We are hiring a Director of Professional Services to run our Professional Services delivery organization. You will own the day-to-day operation of a team that handles migrations, implementations, and custom engagements for some of the most complex enterprise WordPress deployments in the world. The role reports to the VP of Customer Experience (CX) as part of the CX Senior Leadership Team. You’re walking into a team with real delivery capability and an established customer base. The work now is sharper: a tighter service menu, faster time-to-value, a delivery model that can flex to what enterprise customers actually need—and an organization that increasingly runs on AI. Professional Services at WordPress VIP is a revenue-generating business. The person in this seat owns that commercial result, not just the delivery quality behind it. Responsibilities Build an agentic Professional Services organization—one where AI augments delivery, accelerates time-to-value, and creates capacity for higher-complexity work. Build Professional Services into a growth lever: identify expansion opportunities within active engagements, and partner with Account Management and Sales to turn delivery relationships into commercial ones. Lead a Professional Services team of engineers and delivery managers, delivering migrations, implementations, and custom engagements for enterprise customers. Own delivery quality end-to-end: project health, escalation management, customer outcomes, and on-time, on-scope execution. Build and maintain a clear menu of established service offerings, so Sales can sell them, customers can buy them, and the team can deliver them consistently. Meet customers where they are. Not every engagement fits a playbook, and this role requires the judgment to scope and run

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 . Software Engineer - Compliance CXAE As a Software Engineer on the EAA Compliance CXAE team within the Enterprise Engineering,, you'll build the AI-first applications and services that power how CX Compliance agents work every day. This team is responsible for the platforms, tools, and integrations that streamline compliance processes, helping agents resolve customer issues and KYC workflows faster, with greater accuracy, and at scale. You'll own full-stack feature delivery across Golang and React, ship third-party integrations, and directly improve the productivity and compliance experience for millions of Coinbase customers. What you'll do: Own end-to-end development of user-facing features across the compliance agent platform using Golang, React, and cloud technologies, from design through production deployment. Lead assessment, selection, and implementation of third-party tools and vendor integrations that extend platform capabilities and accelerate delivery. Partner with product, design, security, and data teams to deliver cross-functional solutions to complex compliance and CX problems. Build and maintain scalable, high-traffic services leveraging event-driven architectures, caching, load balancing, and observability tooling across AWS and Kubernetes. Mentor engineers on design patterns, coding standards, testing strategies, and deployment best pract

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 . As an Associate Manager, Compliance within CX Global Financial Crimes Operations (GFCO), you'll join the Functional Lead team, a high-performing group responsible for ensuring Coinbase's compliance operations programs across Transaction Monitoring (TM), Screening, and Enhanced Due Diligence (EDD) operate effectively and efficiently. You'll own the compliance content function across all three pillars, lead a small team of contractors, and serve as an operational program manager for the TM function. You'll drive measurable efficiency gains by embedding AI into compliance content operations while maintaining rigorous quality standards. What you’ll do: Own the end-to-end content lifecycle across TM, Screening, and EDD, managing intake, prioritization, creation, review, approval, publishing, and change communication for all procedural content, guidance documents, and job aids Lead a small team of 2-3 contractors, assigning work, setting priorities, and ensuring consistent quality and delivery against deadlines Drive program management for the TM function, hosting weekly change management meetings, tracking the book of work, resolving blockers, and reporting progress to senior leadership Build and deploy AI agents and automated workflows to scale content production, streamline intake processes, and reduce manual effort across daily operations Partner cross-functional

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 . The CX Intelligence team is part of Coinbase’s Enterprise Applications and Architecture org and builds the customer-facing and internal CX experiences that connect the Help Center, chatbots (CBCB), and agent workflows. The team owns the multi-agent platform which powers coinbase chat, Help Center and agent tooling surfaces, partnering closely with Conversation Design, CX, and other Engg teams to deliver secure, compliant, and scalable AI-powered support. Our work provides the trusted and accurate automated and agent-assisted experiences—helping customers get answers faster while enabling human agents to resolve cases more effectively. We are hiring an IC5 Machine Learning Engineer to drive the evolution of our conversational ecosystem by building a seamless hybrid vendor-internal chatbot experience. You will lead the design and implementation of a sophisticated unified orchestration layer that coordinates interactions between vendor AI, internal multi-agent systems, and human participants. This role is pivotal in managing complex state transitions, context sharing, and intent routing across a distributed environment. You’ll thrive here if you enjoy high ownership, architecting complex hand-off logic between disparate LLM frameworks, and building reliable AI-enabled products that are fast, measurable, and scalable. What you'll do: Architect and deploy the orchestratio

About the Team The Customer Experience team serves as a foundational operations pillar at DoorDash, dedicated to resolving friction within the last mile. We architect and oversee an expansive global network of support centers, obsessing over the user journey to ensure every interaction is seamless and reliable. Our mission is to scale a best-in-class support infrastructure that advocates for our community and delivers excellence at the lowest level of detail. About the Role DoorDash is looking for a Director of Customer Experience Strategy & Operations to define and scale the operating systems that shape how consumers, Dashers, and our broader marketplace experience DoorDash. This leader will own a broad portfolio across customer experience strategy, support operations, policies and processes, safety-critical contact handling, and cross-functional CX initiatives across business lines including New Verticals, International, Dasher, Marketplace, and DashPass. You will lead a high-performing S&O team, partner deeply with Product, Engineering, Analytics, Fraud, Operations, and senior business leaders, and translate ambiguous customer and operational problems into scalable solutions. We are especially excited about leaders who bring an AI-native operating mindset: people who have used AI, automation, lightweight tooling, or internal apps to solve real problems, improve team productivity, and redesign manual workflows. This role is an opportunity to apply that builder mindset at marketplace scale. You’re excited about this opportunity because you will… Define the vision, metrics, and operating principles for a best-in-class customer experience across consumers, Dashers, and emerging business lines. Lead a high-impact S&O team responsible for turning defining the customer experience using a multitude of inputs Redesign how CX work gets done by combining people, process, product, data, and AI-enabled workflows. Partner with Product, Engineering, Analytics, Fraud

About the Team The Consumer Engineering Team is responsible for helping consumers discover and order everything they love globally. Our work spans the entire consumer journey across homepage, search, store discovery, item exploration, checkout and post checkout. We aim to craft a hyper-personalized, delightful and frictionless experience for millions of our customers. About the Role As a Senior Staff Machine Learning Engineer on Core Cx, you will set the personalization (P13n) strategy for the entire consumer shopping journey and bring that strategy to life. You will use our robust data and machine learning infrastructure to implement new ML solutions to make the consumer search experience more relevant, seamless, and delightful across restaurant, grocery, retail and all business at DoorDash . You will modernize the recommendation system leveraging AI. You will demonstrate a strong command of production level machine learning, experience with solving end-user problems, and collaborate well with multi-disciplinary teams. You're excited about this opportunity because you will… Drive the engineering vision, strategy, and execution for an organization of 150+ Grow, build, and nurture impactful business-focused product engineering teams. Scale the team by developing leaders internally and attracting world-class talent Mentor and guide a fast-growing organization in setting the right architectural patterns, working with various vendors in the space, and making judicious investments in the right areas anticipating what the company needs a few years down the road. Partner with Business, Product, and other Engineering teams to transform DoorDash from local commerce to agentic commerce We're excited about you because you have… B.S. or M.S. in Computer Science or equivalent. 10+ years of industry experience developing machine learning models with business impact, and shipping ML solutions to production. Proficiency in using AI coding tools (e.g., Claude Code) in th

The Company Delight.ai is on a mission to build the AI workforce of tomorrow. For over a decade, we built the infrastructure behind conversations—chat, voice, video, messaging APIs—and became the #1 CPaaS platform for in-app communications. 4,000+ brands trust us. 7 billion messages flow through our platform every month. 300 million monthly active users. In December 2024, we made the full strategic pivot to AI-first customer experience. By February 2025, we’d launched our AI agent for enterprise CX—built on a decade of conversation data, now with intelligence on top. And in November 2025, we rebranded to Delight.ai. Why Digital Marketing Manager, APAC? APAC represents 33% of our qualified pipeline target for FY27. We’re building out demand generation across Korea and the broader region, and we need someone who can own it end-to-end: paid media, email, webinars, and the localization quality that makes everything land correctly in-market. We’re looking for a marketer who knows the Korean B2B landscape, moves with urgency, and uses AI tools to punch above their weight—not because it’s trendy, but because it’s how you keep pace with what this role demands. The Role You’ll own digital demand generation for Korea, working closely with the APAC Field Marketing Lead to execute paid media campaigns, email programs, and webinars—while also serving as the quality gate on localized marketing assets. This role is for marketers who think in pipelines, not just programs, and want their impact measured in revenue, not impressions. You might be this person if: You think in funnels — awareness, consideration, conversion — and you naturally ask “what does this do for pipeline?” before anyone else does You’ve run a paid media campaign that didn’t just hit delivery targets but actually moved qualified leads through the funnel You use AI tools in your daily workflow—for content drafting, campaign analysis, reporting—and you’ve figured out how to get more done without sacrificing quality

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies - from the world’s largest enterprises to the most ambitious startups - use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. About the team The Solutions Architecture team works with our largest, most complex users to understand their technical requirements and map those to Stripe technology. As a Solutions Architect, you'll partner with Sales to technically qualify new business opportunities, demonstrate the art of the possible with the Stripe Platform, and design robust technical solutions to enable payment transactions, manage money movements, and simplify financial operational processes. What you’ll do You are an experienced technologist with a blend of technical depth and strong business consulting skills. You can write code, but prefer to spend your time working with users to create Stripe solutions to support customer business objectives in complex, mission critical environments. You'll think strategically about the art of the possible for the user’s business, and be able to clearly articulate that in a way that informs and builds confidence in Stripe’s technology. You should be able to engage and motivate cross-functionally both internally and within our customer’s organisations at all levels, from Cx to Product Engineering. You'll have a track record of delivering outstanding customer results as part of a pre-sales team, but a history of deep technical work that gives you the ability to be credible with any audience. Responsibilities Engage with Chief Technical Officers, engineering leads, and other technical leads at key users to share technology roadmaps, demonstr

The Healthcare Senior Solutions Engineer is a strategic expert who understands the specific needs of healthcare organizations and provides business-driven consulting to both prospective and existing customers. SEs offer healthcare-centric expertise that helps our Sales team establish clear value, differentiation, and trust in our AI-powered Contact Center and CX solutions. This individual is a seasoned operator or practitioner with deep experience in healthcare environments—across providers, payers, or digital health—bringing knowledge of clinical workflows, regulatory compliance (HIPAA, HITECH), and patient engagement to every interaction. They engage throughout the entire sales lifecycle, from pre-sales engineering and technical qualification to solution architecture and post-sale expansion. The Healthcare Solutions Engineer is a recognized thought leader who confidently supports C-level discussions, accelerates deal cycles, and helps identify and expand revenue opportunities in healthcare. Key Responsibilities Conducts research to prepare for upcoming meetings with prospects to understand their business environment, market, customers, competitors and general business challenges. Carries out discovery conversations with customers to understand their needs and requirements for a new solution. Uncovers customer pains, learns about customer's objectives and potential needs, gathers metrics necessary for pricing and/or value discussions. Listens to the customer to gather information that can be leveraged in upcoming presentations. Uses their in-depth knowledge of Talkdesk solutions and capabilities to specify the appropriate solution(s) for customer needs and requirements. The SE is continually learning about Talkdesk solutions to keep up with innovations and new releases of TD software. Designs and delivers presentations to customers, on-site & virtual, showing Talkdesk’s capabilities, aligned to the customer's pains and needs that were uncovered during Discovery

Appierについて Appier（エイピア）は、AIネイティブのAgentic AI as a Service（AaaS）企業です。 2012年に「AIの民主化」をビジョンに設立され、「Turn AI into ROI（AIをROIに変える）」をミッションとして掲げています。現在はアジア太平洋地域、ヨーロッパ、アメリカを含む17拠点を展開し、東京証券取引所（証券コード：4180）に上場しています。 Appierは、AI Agentを活用し、企業のマーケティングDX・データ活用・顧客体験（CX）の変革を支援する次世代AIプラットフォームを提供しています。 提供ソリューション Appier AI Marketing Agent Platform Appierは、AI Agentを中心としたオールインワンのマーケティングプラットフォームを提供しています。 企業が保有する顧客データをAIが理解・分析し、マーケティング施策の企画から実行、最適化までをAI Agentが支援します。 データ基盤、予測AI、マーケティングオートメーション、マルチチャネルコミュニケーション、生成AIによるクリエイティブ制作までを一つのプラットフォームで提供し、お客様のマーケティングROI最大化を実現します。 AIQUA（アイコア） AI Agentを活用し、Web・アプリ・メール・LINE・Push通知など複数チャネルにおいて、一人ひとりに最適化された顧客体験を自動で実現するマーケティングオートメーションプラットフォームです。 BotBonnie（ボットボニー） LINEをはじめとするSNSやWebチャットを活用し、AI Agentによる顧客コミュニケーションを実現するマルチチャネルマーケティングソリューションです。 AIRIS（アイリス） AI Agentの意思決定を支えるPredictive Customer Data Platform（CDP）です。 顧客データを統合するだけでなく、AIによる予測分析を通じて顧客の将来行動やニーズを予測し、最適なマーケティング施策や顧客体験の実現を支援します。 AdCreative.ai（アドクリエイティブ・エーアイ） 生成AIを活用し、高品質な広告クリエイティブを自動生成・最適化するAIクリエイティブプラットフォームです。 ポジション概要 Customer Success Managerとして、AIQUA・BotBonnie・AIRIS・AdCreative.aiを導入いただいた日本国内の企業を担当し、お客様がプラットフォームから最大の成果を引き出せるよう、導入から定着、そして事業成果の創出までを伴走していただきます。 本ポジションは、問い合わせに対応するサポート業務ではありません。 お客様のマーケティング課題とKPIを深く理解した上で、AI Agentを活用した施策を「一緒に設計し、実行し、数字で振り返る」——お客様のマーケティングチームの一員として動く、実行力を伴うパートナーです。 担当アカウントの継続率とアカウント成長に責任を持ち、日々の施策運用からお客様とのQBR（四半期レビュー）までを一貫して担っていただきます。 また、プロダクト・エンジニアリングチームは台北を中心としたグローバル体制です。日本のお客様の声を製品開発に届け、機能改善の優先度を動かしていくことも、CSMの重要な役割です。 主な業務内容 担当アカウントのオンボーディングをリードし、初期の成果創出（Time to Value の最短化）を実現する お客様のマーケティング課題・KPIを理解し、AIQUA・BotBonnie・AIRIS・AdCreative.aiを活用した施策を設計・実行・改善する セグメント設計、シナリオ構築、配信設定、効果検証まで、プラットフォーム上で手を動かしながらお客様と伴走する 利用状況・成果データをモニタリングし、活用が進んでいない領域を能動的に特定して改善提案を行う 経営層・マーケティング部門・IT部門など多様なステークホルダーと信頼関係を構築し、QBRを主導する 担当アカウントの契約継続に責任を持ち、アップセル・クロスセルの機会を創出してアカウントを成長させる タグ・SDK実装やデータ連携に関する技術的な論点を切り分け、お客様の技術担当者や社内テックチームと連携して解決に導く お客様からのフィードバックを構造化してプロダクトチームへ連携し、製品ロードマップへの反映を推進する Sales、Pre-Sales、Marketing、Productチームと連携し、お客様への価値提供を最大化する 成功事例やナレッジをプレイブックとして形式知化し、チーム全体の提供品質を引き上げる 応募条件 必須 デジ