Jobs in Japan

Lead Software Engineer 2c Inference Performance Optimization in Japan

59 active opportunities · Updated October 2026

Explore current lead software engineer 2c inference performance optimization jobs across Japan. Filter by work mode, employment type, experience, department, date posted and distance.

D
📍 Japan· Full-time
✓ Quality checkedCompany trend -100%

Datadog is the global leader in observability and security for cloud applications. Our SaaS platform integrates infrastructure monitoring, application performance monitoring, log management, digital experience monitoring, cloud security, and AI-powered observability to help organisations accelerate digital transformation and operate at scale. As organizations across Japan continue to modernize their technology stacks and embrace cloud-native architectures, Datadog is uniquely positioned to help customers achieve greater visibility, reliability, security, and business performance. The Opportunity Following significant investment in Japan by Datadog, we’re now seeking a senior executive to lead the next phase of growth and scale the business rapidly. This executive will be responsible for defining and executing Datadog's strategy in Japan, driving sustainable, predictable revenue growth, strengthening customer and partner relationships, developing high-performing teams, and firmly establishing Datadog as the market leader for Japan. Reporting to senior APJ leadership, the Country Leader will serve as the executive face of Datadog in Japan and will work cross-functionally with Sales, Customer Success, Marketing, Partnerships, Solutions Engineering, Product, and Corporate functions to accelerate market penetration and customer success. At Datadog, we work hard to maintain an excellent culture of trust, high standards, and great outcomes for customers, partners and employees About the Role Datadog is seeking an experienced and respected country executive to serve as Country Manager, Japan. As the most senior leader in the market, you will be responsible for owning Japan’s overall business health across acquisition, usage, retention, ecosystem, culture, and cross-functional execution. The Country Manager owns the country plan and operating cadence, ensuring effective direct management of all three sales segments (Enterprise, Mid Market, Commercial); and cross-

GitAIGoRust
D
📍 Japan· Full-time
✓ Quality checkedCompany trend -100%

As a Manager, Commercial Sales, you will provide strategy, mentorship, and guidance for a team of Commercial Account Executives. This role impacts one of the largest lines of business in the company, ultimately bringing a proven product to a multi-billion dollar market. At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them. What You’ll Do: Motivate your team to exceed objectives Develop and maintain accurate team forecasts Hire, oversee, and train a team of Account Executives Drive lead generation, high activity standards, and pipeline management Facilitate the ramp up for all new team members, coaching them to success Monitor the sales funnel from prospect to close and create metrics to improve performance Who You Are: Experienced in hi-tech direct sales Familiar with SaaS/Cloud and Salesforce Able to accurately forecast team performance Passionate about coaching, mentorship, and team management Motivated by helping people grow with a desire to continue learning A self-starter who thrives in a high-growth, rapidly changing marketplace Proven in overseeing an outbound sales team in all areas of the sales cycle Datadog values people from all walks of life. We understand not everyone will meet all the above qualifications on day one. That's okay. If you’re passionate about technology and want to grow your experience, we encourage you to apply. Benefits and Growth: High income earning opportunities based on performance Opportunity for Presidents Club New hire stock equity (RSU) and employee stock purchase plan (ESPP) Continuous professional development, product training, and career pathing Sales training in MEDDIC and Command of the Message Intra-departmental mentor and buddy program for in-house networking An inclusive company culture, opportu

O
📍 Japan· Full-time
✓ Quality checkedCompany trend -100%

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. Based in Tokyo, we are seeking a Director to lead our high-growth Japan Sales Development team. As the leader of Sales Development, you will be responsible for owning the management of overall inbound business development and outbound prospecting pipeline strategy and execution. You will lead & motivate a team of highly driven SDRs and implement efficient processes & tools that optimize for scale in a fast-paced innovative and collaborative environment. This role reports to the Senior Director, Sales Development (APJ). This is a high visibility role that is responsible for hiring, on-boarding, and coaching a group of high performing sales professionals while collaborating with many other departments within our Go To Market Function (Marketing, Operations and Sales etc.). You will own Japan xDR Go to Market strategy, with a goal of improving the existing teams productivity, efficiency and outbound quality to build and progress pipeline to revenue. At Okta, our mission is to maintain a people-first, diverse, and inclusive culture. You will be responsible for building the Japan xDR team culture with a focus on coaching and mentoring. You will need to be an expert in prospecting and account planning strategies with a high growth company and must be able to educate others effectively in these areas. You will also focus on enabling continued growth of their reps in preparation for their prog

AWSRestMachine LearningAI
G
📍 Japan· Full-time
✓ High-confidence listing
Quick readStrong listing-quality and freshness signals

OVERVIEW: The Talent Acquisition Intern role is an exciting opportunity for a college student who wants to work in recruitment at a fast-paced, high-growth company. The Talent Acquisition (TA) team is a group of global professionals, and we are looking for an intern to support critical hires in APAC across a variety of departments, such as business development, finance, marketing, HR, and more. In this role, you will support all aspects of the recruitment cycle by partnering closely with our recruiting team and hiring managers to understand the talent market, utilize recruitment strategies, and generate talent pipelines. You will have the opportunity to work on a variety of critical talent acquisition projects, such as diversity & inclusion, HRIS, employer branding, and more. This internship is a hybrid role and the work location is in Tokyo, Japan. WHAT YOU’LL DO: Report and work closely with the APAC Lead who is based in Hong Kong Assist with the recruitment process, including strategy development, posting jobs, sourcing, diversity recruiting, candidate outreach, and hiring Build a pipeline of talent by sourcing candidates via Greenhouse, our Applicant Tracking System, and LinkedIn Recruiter Support early career recruitment, programme management and drive outreach initiatives (e.g. campus fairs) Assist with interview scheduling and candidate communications WHAT YOU HAVE: Current student enrolled in an accredited degree program An interest in Talent Acquisition Demonstrated professional communication skills Ability to work in a fast-paced and growing environment High level of independence and self-motivation Able to work at least three times (or more) a week Able to start work no later than Sep 2026 WHAT WE OFFER: We are a team! You will receive strong team support, comprehensive training resources and dedicated mentorship scheme to ensure your career progression Development opportunities through the LinkedIn Learning platform Happy hours and

RestAIMarketingFinance
B
📍 Japan· Full-time
✓ High-confidence listing
Quick readStrong listing-quality and freshness signals

Senior Manager, Japan Security and Compliance GTM WHAT IS BOX? [Recruiting owns] Box is the market leader for Cloud Content Management. Our mission is to power how the world works together. Box is partnering with enterprise organizations to accelerate their digital transformation by creating a single platform for secure content management, collaboration and workflow. We have an amazing opportunity to further establish ourselves as leaders in the space, and we need strong advocates to help us achieve that goal. By joining Box, you will have the unique opportunity to help capture a majority of this developing market and define what content management looks like for the digital enterprise. Today, Box powers over 97,000 businesses, including 70% of the Fortune 500 who trust Box to manage their content in the cloud. WHY BOX NEEDS YOU Box's security, compliance, and privacy posture is a business enabler for customers and a competitive differentiator in the market. We are looking for a Senior Manager, Japan Security and Compliance GTM, to lead Box’s customer trust efforts in Japan. This will include oversight and responsibility for gathering, vetting and scaling security, compliance, privacy and other trust-related information to customers and partners. The right person should be excellent at communicating vertically and horizontally across the company and will be comfortable explaining Box's security, compliance, and privacy posture. WHAT YOU'LL DO Lead Japan’s customer trust efforts, including responding to customer security due-diligence questionnaires and, as needed, leading customer audits. Work with US-based GRC, Security, Legal, Product and other SMEs to find answers to customer questions specific to the Japan market. Assess the need for new customer-facing content; drive the development of new content; and then scale it to account teams, customers and partners, as appropriate. Work closely with both Box Japan’s leadersh

GitAIGoRust
O
📍 Tokyo, Japan· Full-time· Remote
✓ High-confidence listingCompany trend -100%

From ¥1M/yr

Quick readStrong listing-quality and freshness signals

About the Team OpenAI’s mission is to build safe artificial general intelligence (AGI) which benefits all of humanity. This long-term undertaking brings the world’s best scientists, engineers, and business professionals into one lab together to accomplish this. In pursuit of this mission, our Go To Market (GTM) team is responsible for helping customers learn how to leverage and deploy our highly capable AI products across their business. The team is made of Sales, Solutions, Support, Marketing, and Partnership professionals that work together to create valuable solutions that will help bring AI to as many users as possible. About the Role Our Sales team has a unique mission to help customers understand the deep impact that highly capable AI models can bring to their business and users. This role is a mixture of technical understanding, vision, partnership, and value-driven strategy. You’ll be a key driver of opportunities through the entire sales cycle, from pipeline generation to closure. You’ll work with researchers, engineers, and solution strategists to help customers evolve their industry with AI. You’ll also collaborate with business partners to support customers’ business transformation and growth. This role is based in Tokyo, Japan. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees. In this role, you will: Manage key accounts, developing and executing strategies for a comprehensive account plan based on customers’ business priorities and growth opportunities. Lead our enterprise prospects’ journeys from consideration to successful deployment. Partner with solutions and research engineering to build and execute complex customer programs and projects. Collaborate with business partners to generate opportunities, develop joint proposals, and support deployment, expanding customer value and business opportunities. Own a consumption revenue target. Manage consumption revenue forecasts. Analyze key account

AWSRestAIGo
O
📍 Japan· Full-time
✓ Quality checkedCompany trend -100%

About the Team The Applied AI Engineering team is responsible for helping developers and enterprises safely and effectively deploy OpenAI technologies in production. We act as trusted technical advisors and thought partners for customers, working side by side with their teams to identify high-value use cases, design practical architectures, and move from prototype to durable deployment. Cybersecurity is one of the most urgent domains where AI can help. Security teams are under pressure to reason across code, logs, infrastructure, tickets, alerts, and vulnerability data faster than ever. As frontier models become more capable, organizations need deep technical guidance on how to evaluate, validate, and safely deploy AI systems in security-critical workflows. About the Role We are looking for a Cybersecurity Applied AI Engineer to partner with customers and help them apply OpenAI models, APIs, Codex, and agentic workflows to real cybersecurity use cases. You will work with CISOs, security executives, application security leaders, SOC teams, security engineering teams, and hands-on practitioners to identify where AI can create measurable security outcomes. This is a customer-facing technical role for someone who can move fluidly between executive strategy, practitioner-level cyber depth, and hands-on solution design. You will help customers evaluate and deploy workflows such as secure code review, vulnerability triage, threat modeling, remediation, SOC and incident response workflows, detection engineering, cloud security, GRC automation, and security validation. You will collaborate closely with Sales, Solutions Engineering, Product, Engineering, Research, and Security to turn customer needs into safe deployment patterns, reusable field assets, and product feedback. This role is based in our Tokyo office. We offer relocation support to new employees. In this role, you will: Deeply embed with strategic customers as the technical lead for AI-enabled cybersecurity workfl

JavaScriptPythonJavaAWS
O
📍 Japan· Full-time· Remote
✓ Quality checkedCompany trend -100%

About the Team The Applied AI Engineering team is responsible for ensuring the safe and effective deployment of Generative AI applications for developers and startups. We act as a trusted advisor and thought partner for our customers, working to build an effective backlog of GenAI use cases for their industry and drive them to production through strong technical guidance. OpenAI's customers represent a range of diverse backgrounds and maturity, from early-stage startups to late-stage startups. About the Role We are seeking a technically proficient, business-minded Applied AI Engineer to help push the frontier of advanced AI with our strategic startup customers. You'll work with some of the most exciting AI startups in the world, guiding them through ideation, development, delivery, and scaling to accelerate and maximize the value of what they build on our platform. You will have the opportunity to work on the most novel and creative use cases being built on our API, serving as a critical partner in collecting and delivering high-fidelity product and model feedback internally. You will collaborate closely with Sales, Solutions Engineering, Applied Research, and Product teams, and you will report to the Startups Applied AI Lead. This role is based in our Tokyo, Japan office. We use a hybrid work model of 3 days in the office per week and offer relocation assistance to new employees. In this role, you will: Partner closely with strategic startup customers as their technical thought partner to build novel applications on our API, helping them rapidly move from ideation to scale. Provide proactive guidance to maximize business impact and accelerate application development. Experiment and prototype alongside customers, demonstrating practical use cases. Contribute to open-source resources and scale the function by sharing knowledge, codifying best practices, and publishing useful resources. Synthesize and deliver valuable feedback to the Product and Research teams. Build

JavaScriptPythonJavaAWS
N
📍 Tokyo, Japan, Japan· Full-time· Remote
✓ Quality checkedCompany trend -100%

Who We Are Notion is the collaborative AI workspace where teams and agents think together . We're building one place where your knowledge, projects, meetings, and AI tools live side by side, so work is faster, clearer, and less fragmented. Millions of individuals, small teams, and large companies run their work on Notion. Notinos (our employees) are customer zero in bringing this future of work to life. We care about craft, building things that last, and the belief that great work is still fundamentally human. Our goal isn’t to ship the next feature. Each and every team of Notinos is working to set the standard for how humans work together in the AI era. From building a business’s system of record to making and managing AI agents to automating away the busy work, we care deeply about giving our customers more time for their life’s work. About The Role: The Solutions Consultant Manager is the person who makes our GTM motion real on the ground. As an in-region leader directly managing a team of Solutions Consultants, you'll own your team's full commercial output—new logo, expansion, and renewals—and be accountable for both the results and the quality of execution that produces them. This isn't a traditional pipeline-management role. The best SC Managers are coaches first: they know what a great first meeting looks like, can watch a live build and tell a rep exactly what to change, and build the operating rhythm and inspection cadence that makes consistent execution possible across the team. If you're a builder who loves developing people as much as winning deals—and you want to lead a regional team in a go-to-market model that's genuinely new—this is the role. What You'll Achieve: Own the commercial performance of your team across new logo ARR, expansion ARR, and UBP outcomes—accountable for both the headline numbers and the quality of execution that drives them Coach SCs on the GTM builder motion: what great looks like in a first meeting (workflow diagnosis, current

RestAIGoTally
D
📍 Australia; Tokyo, Japan· Full-time
✓ Quality checkedCompany trend -100%

As Datadog’s in-house product experts, the Technical Escalation Engineering (TEE) team plays a critical role in driving our global success. We enable our customers, from the world’s most innovative startups to the largest enterprises. Through deep technical expertise, relentless problem-solving, and exceptional customer engagement, we educate, guide, and troubleshoot, delivering high-impact solutions that shape the customer experience. Whether through hands-on technical call, in-depth fact findings meeting, or complex investigations, we set the gold standard for technical excellence and customer advocacy. As part of our TEE team, you’ll tackle the most challenging technical problems, collaborate directly with Engineering and Product to refine and evolve our platform, and mentor teams worldwide, elevating the technical bar at every level. As part of the Technical Escalation Engineering (TEE) team, you’ll operate at the heart of Datadog’s ecosystem, working at the intersection of Technical Solutions, Engineering, Product, and our Customers. Every challenge you take on will directly impact the performance, scalability, and success of both our clients and our platform. You’ll be in an environment that moves fast, challenges you daily, and rewards curiosity, ownership, and technical excellence. This is your chance to shape the future of observability and security, driving innovation, mentoring teams, and influencing product direction while witnessing your expertise make an immediate and lasting impact. At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them. What You’ll Do: Develop deep technical expertise and continuously learn as the product evolves. Investigate complex escalations, lead high-stakes technical calls, and drive solutions for our most critic

V
📍 Tokyo, Japan, Japan· Full-time
✓ Quality checked

At Vanta, our mission is to help businesses earn and prove trust. We believe that security should be monitored and verified continuously, and we empower companies to practice better security and prove it with ease. Vanta has a kind and talented team, and while some have prior security experience, many have been successful at Vanta without it. As a Solutions Engineer for New Markets, you’ll be leading the technical discussion with our key prospects & customers in Japan, guiding customers toward clarity, feasibility, and alignment on the end-to-end solution. You’ll be an integral part of the Sales team, working both pre and post-sales to ensure technical fit and create innovative solutions for our customers. You will also serve as a bridge between our product development team and our customers, utilizing your strong communication skills to deliver pointed and actionable feedback that our product teams might use to ensure Vanta gets 1% better every day. This role will be based in our Tokyo, Japan office with a hybrid working model. What you’ll do as a Solutions Engineer at Vanta: Partner with pre and post sales to identify, qualify and drive net new, expansion and renewal opportunities Develop a deep understanding of our product capabilities, integrations, configurations messaging, partner ecosystem, and competitive landscape. Build and maintain strong technical partnerships with our customers via engaging product demonstrations, trials, and other communications Develop a trusted advisor relationship with key accounts, customer stakeholders, and executive sponsors that may lead to renewals, expansion, and advocacy Influence Vanta’s strategy and product priorities to drive adoption and retention by being the voice of the customer Cultivate an environment of teamwork, openness, creativity, and continuous improvement Work cross-functionally to resolve customer business issues and work toward mutual goals Develop processes and workflows that allow us to build and scale

AWSAzureLinuxRest
V
📍 Tokyo, Japan, Japan· Full-time
✓ Quality checked

At Vanta, our mission is to help businesses earn and prove trust. We believe that security should be monitored and verified continuously, and we empower companies to practice better security and prove it with ease. Vanta has a kind and talented team, and while some have prior security experience, many have been successful at Vanta without it. As a Solutions Engineer for New Markets, you’ll be leading the technical discussion with our key prospects & customers in Japan, guiding customers toward clarity, feasibility, and alignment on the end-to-end solution. You’ll be an integral part of the Sales team, working both pre and post-sales to ensure technical fit and create innovative solutions for our customers. You will also serve as a bridge between our product development team and our customers, utilizing your strong communication skills to deliver pointed and actionable feedback that our product teams might use to ensure Vanta gets 1% better every day. This role will be based in our Tokyo, Japan office with a hybrid working model. What you’ll do as a Solutions Engineer at Vanta: Partner with pre and post sales to identify, qualify and drive net new, expansion and renewal opportunities Develop a deep understanding of our product capabilities, integrations, configurations messaging, partner ecosystem, and competitive landscape. Build and maintain strong technical partnerships with our customers via engaging product demonstrations, trials, and other communications Develop a trusted advisor relationship with key accounts, customer stakeholders, and executive sponsors that may lead to renewals, expansion, and advocacy Influence Vanta’s strategy and product priorities to drive adoption and retention by being the voice of the customer Cultivate an environment of teamwork, openness, creativity, and continuous improvement Work cross-functionally to resolve customer business issues and work toward mutual goals Develop processes and workflows that allow us to build and scale

AWSAzureLinuxRest
C
📍 Japan· Full-time
✓ Quality checkedCompany trend -100%

Who are we? Cohere is the leading security-first enterprise AI company. We build cutting-edge foundation AI models and end-to-end products that are designed to solve real-world business problems. We’re training and deploying frontier models for enterprises who are building AI systems. We believe that our work is instrumental to the widespread adoption of AI and we are looking for folks that want to be part of that. We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. Cohere is a team of researchers, engineers, designers, and more, who are all passionate about their craft. We are a global technology company headquartered in Toronto with key offices in London, New York City, San Francisco, Montreal, Paris, Berlin and Seoul. Join us! About North: North is Cohere's cutting-edge AI workspace platform, designed to revolutionize the way enterprises utilize AI. It offers a secure and customizable environment, allowing companies to deploy AI while maintaining control over sensitive data. North integrates seamlessly with existing workflows, providing a trusted platform that connects AI agents with workplace tools and applications. Why This Role? This role offers a unique opportunity to shape how enterprises harness the power of AI in real-world applications. As a bridge between our core North product and our clients’ engineering teams, you’ll be at the forefront of solving complex problems and securely integrating AI into critical sectors such as finance, healthcare, and telecommunications. Our esteemed clients include industry leaders like RBC, Dell, and LG CNS. We are seeking engineers who deeply care about customers and want to work at the cutting edge of Agentic AI. Note: between 20 - 40% travel anticipated In this role, you will: Lead end-to-end deployment of North in private cloud and on-premises environments, including planning, configuration, testing, and r

AWSAzureGCPKubernetes
F
📍 Japan· Full-time
✓ Quality checkedCompany trend -100%

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: Flexport is insourcing operations in Japan — one of the world's most quality-driven and relationship-led freight markets. To stand up our in-house Tokyo operations team, we are seeking a Senior Operations Developer: a deeply experienced freight forwarding operator who will help us build the local team, establish the right vendor relationships, and accelerate the velocity of our insourcing initiative. Japan is a market where seniority and trust take precedence in business dealings, and where local relationships with carriers, CFS providers, and drayage partners are difficult and slow to build from the outside. As Senior Operations Developer, you will use your existing network and operational expertise to dramatically shorten that ramp time — laying the foundation for a Tokyo operations function that supports a projected ~150 FCL, ~30 LCL, and ~44 Air shipments per month by year-end 2026. You will: Establish and strengthen Flexport's relationships and operating arrangements with key local vendors in Japan, including CFS, drayage providers, ocean carriers, and customs partners. Lead the sourcing, screening, and hiring of the local Tokyo operations tea

NR
📍 Japan· Full-time
✓ Quality checkedCompany trend -100%

We are a global team of innovators and pioneers dedicated to shaping the future of observability. At New Relic, we build an intelligent platform that empowers companies to thrive in an AI-first world by giving them unparalleled insight into their complex systems. As we continue to expand our global footprint, we're looking for passionate people to join our mission. If you're ready to help the world's best companies optimize their digital applications, we invite you to explore a career with us! Your Opportunity We are seeking a proactive and detail-oriented Associate HRBP to join our team in Tokyo. In this role, you will be responsible for the day-to-day HR operations and provide essential support across the entire employee lifecycle. You will work closely with the local management team to ensure a positive work environment while maintaining compliance with Japanese labor standards. This role is critical in ensuring a positive employee experience and supporting our growth in the Japanese market. Beyond compliance, you will act as a cultural bridge and a dedicated local resource, ensuring our Tokyo team feels connected to our global mission while fostering a collaborative and effective team environment. This is an excellent opportunity for an HR professional looking to grow their career in a dynamic, international environment. Key Responsibilities Performance Management Partners with HRBP to advise managers and employees on all aspects of the New Relic performance management process both informal and formal. Provides guidance to the business on the appropriate solutions while taking into account New Relic’s policies as well as local laws and regulations. Support on the content of written and verbal informal performance feedback, coaching plans, and/or behavioral/formal improvement plans Employee Relations (ER) Conducts ER investigations as a lead and/or support aligned with New Relic’s policies as well as local laws and regulations. Re

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