Backend Api Engineer Jobs

About Paytm Europe Merchants deserve better from their payments provider: fairer pricing, faster settlement, easier tools, and support from a partner that understands their business. Paytm Europe Payments S.A., backed by One97 Communications Limited, one of India's largest fintech groups, is building a merchant payments business in Europe. We are starting with Luxembourg and are currently in the early stages of shaping our product, go-to-market approach, merchant outreach, and local market understanding. We are looking for motivated interns who are curious, proactive, and excited to be part of building something from the ground up. About the Internship Duration: 6 months Location: Luxembourg Type: Internship As a Market Intelligence Intern, you will help Paytm Europe better understand Luxembourg's merchant market: visiting local businesses, speaking with merchants, collecting information on how they accept payments today, and helping the team spot opportunities. This is a hands-on role, split between the field visits and desk research. What You'll Be Doing ● Visit merchants across Luxembourg: restaurants, cafés, retail shops, convenience stores, fuel stations, and other small businesses. ● Ask merchants how they currently accept payments, which provider or card machine they use, and what works well and what does not. ● Record findings in a structured format: merchant name, location, business type, payment method, provider, and key pain points. ● Support desk research on Luxembourg's payments market: local providers, pricing models, card machines, and merchant reviews. ● Identify common challenges: payment costs, settlement delays, onboarding friction, hardware or reporting issues. ● Explore where AI or tech tools could help merchants: marketing, invoicing, inventory, reporting, loyalty, scheduling. ● Write findings into simple weekly summaries for the team. ● Coverage areas: Luxembourg City, Kirchberg, Cloche d'Or, Esch-sur-Alzette, Differdange, Dude

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This is Adyen Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. Terminal (POS) Certification Expert The IPP Security & Certifications team owns the certification portfolio that keeps Adyen's in-person payments infrastructure compliant and approved to operate. That spans PCI certifications across our hardware and software, and EMV certification of the payment kernels and applications running on our terminals worldwide. This role sits at the center of our Level 2 certification work. Adyen develops its own L2 kernels (contact & contactless), and you will own their certification end to end: coordinating type approval testing with our external certification lab, analyzing test results, and translating findings into clear, actionable reports for our kernel developers to work from. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. What you will do Adyen develops its own L2 payment kernels, which sit at the core of every in-person transaction we process. You will own the technical preparation and execution of Level 2 kernel certification , ensuring our kernels meet EMVCo type approval requirements as well as the contact and contactless specifications of Visa, Mastercard, Amex, Discover, JCB, UnionPay, existing local payment method & p

This is Adyen Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. Senior Procurement Manager - Data Centers We are looking for a fast learner and hands-on Procurement Manager to join Adyen's Procurement team, a dynamic global team within our Finance function. The goal of the team is to contribute to Adyen’s 10x ambition through sustainable commercial decisions, risk mitigation, contract and vendor management, ultimately empowering stakeholders to deliver their strategies. You will work in the data center category, alongside another category manager and a supply chain manager, but as Adyen grows, and the Procurement team with it, this scope might change and increase in the future. What you'll do Act as a business partner to stakeholders such as Infrastructure, Data Center Engineering, Legal and Sustainability, delivering value and enabling their strategies. Lead and initiate commercial negotiations, including but not limited to contract renewals and setting up new agreements. Be responsible for the supplier selection process, RFx and screening. Work with the Infrastructure team on roadmaps, including our DC expansion plans. Do vendor monitoring on performance and contractual agreements. Be tracking and reporting on industry trends. Build and maintain relationships with key vendors. Who you are 7+ years of relevant experience, including category management or sourcing. Deep knowledge and exper

This is Adyen Adyen is the financial technology platform of choice for leading companies. By providing end-to-end payments capabilities, data-driven insights, and financial products in a single global solution, Adyen helps businesses achieve their ambitions faster. With offices around the world, Adyen works with the likes of Facebook, Uber, H&M, eBay, and Microsoft. To maintain our momentum, we need people to join us in finding new ways of solving our unique challenges - people like you. For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. APAC AML/CFT Compliance Lead A key part of building our business is ensuring we do it with sustainable outcomes, compliant with regulations. Trust from all stakeholders is a key enabling factor to make Adyen successful in the long term. To achieve this, Adyen has organized a mature Second Line function that partners with the business to cut through financial crime risk complexities and power sustainable growth. Our Anti-Money Laundering (AML) Compliance team and framework are at the core of this. Within the global AML Compliance team, we are looking for an experienced professional located in Singapore and with a proven track record in AML Compliance. This role is created to help build Adyen’s business operations in Singapore and the rest of the Asia-Pacific (APAC) region. In this role, you will be responsible for managing Adyen’s internal and external regulatory compliance obligations for the Singapore Branch. The successful candidate will also act as the Money Laundering Reporting Officer for Singapore, serving as the point of contact for regulators and authorities. Moreover, we expect this role to s

At Breeze, we're building the AI-powered infrastructure layer for global commerce, making it radically simpler for businesses to sell, get paid, and operate across markets. We go far beyond traditional payment processing. Breeze combines global payments, AI, stablecoins, and a Merchant of Record-like model to take on the complexity businesses typically manage themselves, including compliance, risk, fraud, chargebacks, reconciliation, and customer support. Our goal is simple: let businesses focus on building and selling great products while Breeze handles the complexity behind getting paid. Backed by Sequoia Capital , Multicoin Capital , and The Chainsmokers , Breeze is a successful, rapidly growing, and exceptionally well-capitalized company. We have the runway to think long term while remaining early enough that every person joining today can have a meaningful impact on what we build. Overview We’re hiring a Treasury Operations Manager to join our team! You’ll be at the center of how money moves through our business. From owning merchant settlements, managing liquidity across our banking and custody network, and making sure payouts happen accurately and on time across every currency and entity we operate in. This is a hands-on role with real ownership and real-time decision-making. You’ll position cash ahead of market opens, make critical funding decisions, execute wires and on-chain transfers under dual control, and jump in to investigate when a settlement doesn’t land where it should. And you won’t just run the operation, you’ll help build what comes next. You’ll take workflows that rely on spreadsheets and tribal knowledge and turn them into scalable, repeatable processes that can keep pace with a growing payments business. If you’ve worked in treasury or payment operations within payments, banking, fintech, or crypto and love moving fast, solving problems, and building better systems as you go, you’ll feel right at home here. What You'll Do Own merchant settlem

Role Summary Pfizer Commercial Oncology is introducing the world to the next era of cancer care. With a growing portfolio of novel therapies, industry-leading R&D, and a goal of delivering eight breakthroughs by 2030 across major cancer types, we're translating cutting-edge science into market-shaping impact. Here, you'll partner with exceptional colleagues across scientific, medical, and manufacturing teams, backed by advanced digital and AI-enabled infrastructure and the authority to accelerate medicines from discovery to delivery. Guided by our values of courage, excellence, equity, and joy, you'll have the opportunity to stretch your skills and build a career that evolves with you—across teams, roles, and the Pfizer enterprise. Join us to make history — for patients, for their families, for the future. The Senior Oncology Account Specialist (SOAS) will have a variety of responsibilities, ranging from promoting Pfizer’s product portfolio to health care providers and specialists, to educating members of the healthcare community regarding the appropriate use of Pfizer products, to calling on accounts and organized customers to help improve patients’ experience with Pfizer products, as well as the overall quality of patient care delivered. The SOAS plays a critical role in increasing Pfizer’s brand with high-value target customers by linking an insightful assessment of the account and/or business landscape with a strong understanding of Pfizer’s products and resources. BASIC QUALIFICATIONS BA/BS Degree from an accredited institution BA/BS Degree from an accredited institution OR an associate’s degree with 8+ years of experience; OR a high school diploma (or equivalent) with 10+ years of relevant experience. Ability to travel domestically and stay overnight as necessary Valid US driver’s license and driving record in compliance with company

ROLE SUMMARY Pfizer Commercial Oncology is introducing the world to the next era of cancer care. With a growing portfolio of novel therapies, industry-leading R&D, and a goal of delivering eight breakthroughs by 2030 across major cancer types, we're translating cutting-edge science into market-shaping impact. Here, you'll partner with exceptional colleagues across scientific, medical, and manufacturing teams, backed by advanced digital and AI-enabled infrastructure and the authority to accelerate medicines from discovery to delivery. Guided by our values of courage, excellence, equity, and joy, you'll have the opportunity to stretch your skills and build a career that evolves with you—across teams, roles, and the Pfizer enterprise. Join us to make history — for patients, for their families, for the future. At Pfizer Oncology, we are committed to “Outdo Cancer” by advancing transformative medicines wherever we can make a profound difference in the lives of patients. Today, Pfizer Oncology has an industry leading pipeline that includes the combined legacy Pfizer and Seagen portfolio across breast, genitourinary (GU) including both prostate and bladder, hematology-oncology and thoracic therapeutic areas. The primary purpose of this position will be to provide comprehensive day-to-day administrative support to the US Prostate Franchise Lead and to support the overall Franchise business. The Administrative Assistant will report to the US Prostate Vice President. In this role, the Administrative Assistant will be responsible for (but not limited to) heavy calendar management, coordination of meetings and events, development of agendas and meeting reports, slide development for select meetings, and requests and assembly of briefing materials, arranging travel and expense report preparation. As a working professional, he/she will be expected to handle tasks independently and in a proactive manner. <

🚀 About WRITER WRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI. Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI. 📐 About the role We are looking for a visionary and execution-oriented AI transformation lead to serve as a high-impact partner for our most strategic Fortune 100 accounts. In this role, you’ll be the architect of change, moving beyond simple software implementation to help the world's largest organizations fundamentally rethink how they work. You’ll sit at the intersection of business strategy and cutting-edge technology, translating the power of the WRITER platform into measurable P&L impact and helping executives navigate the shift to an AI-first operating model. This is a rare opportunity to build the playbook for enterprise AI transformation. You won’t just be managing accounts; you’ll be driving the next industrial revolution by helping C-suite leaders move from AI experimentation to full-scale value realization. Your work will directly influence WRITER's product roadmap and help define how the world’s biggest brands use superintelligence to expand human capacity. Thi

🚀 About WRITER WRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI. Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI. 📐 About the role We are looking for a visionary and execution-oriented AI transformation lead to serve as a high-impact partner for our most strategic Fortune 100 accounts. In this role, you’ll be the architect of change, moving beyond simple software implementation to help the world's largest organizations fundamentally rethink how they work. You’ll sit at the intersection of business strategy and cutting-edge technology, translating the power of the WRITER platform into measurable P&L impact and helping executives navigate the shift to an AI-first operating model. This is a rare opportunity to build the playbook for enterprise AI transformation. You won’t just be managing accounts; you’ll be driving the next industrial revolution by helping C-suite leaders move from AI experimentation to full-scale value realization. Your work will directly influence WRITER's product roadmap and help define how the world’s biggest brands use superintelligence to expand human capacity. Thi

🚀 About WRITER WRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI. Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI. 📐 About the role We are looking for a visionary and execution-oriented AI transformation lead to serve as a high-impact partner for our most strategic Fortune 100 accounts. In this role, you’ll be the architect of change, moving beyond simple software implementation to help the world's largest organizations fundamentally rethink how they work. You’ll sit at the intersection of business strategy and cutting-edge technology, translating the power of the WRITER platform into measurable P&L impact and helping executives navigate the shift to an AI-first operating model. This is a rare opportunity to build the playbook for enterprise AI transformation. You won’t just be managing accounts; you’ll be driving the next industrial revolution by helping C-suite leaders move from AI experimentation to full-scale value realization. Your work will directly influence WRITER's product roadmap and help define how the world’s biggest brands use superintelligence to expand human capacity. Thi

🚀 About WRITER WRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI. Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI. 📐 About the role We are looking for a visionary and execution-oriented AI transformation lead to serve as a high-impact partner for our most strategic Fortune 100 accounts. In this role, you’ll be the architect of change, moving beyond simple software implementation to help the world's largest organizations fundamentally rethink how they work. You’ll sit at the intersection of business strategy and cutting-edge technology, translating the power of the WRITER platform into measurable P&L impact and helping executives navigate the shift to an AI-first operating model. This is a rare opportunity to build the playbook for enterprise AI transformation. You won’t just be managing accounts; you’ll be driving the next industrial revolution by helping C-suite leaders move from AI experimentation to full-scale value realization. Your work will directly influence WRITER's product roadmap and help define how the world’s biggest brands use superintelligence to expand human capacity. Thi

🚀 About WRITER WRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI. Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI. 📐 About the role We are looking for a visionary and execution-oriented AI transformation lead to serve as a high-impact partner for our most strategic Fortune 100 accounts. In this role, you’ll be the architect of change, moving beyond simple software implementation to help the world's largest organizations fundamentally rethink how they work. You’ll sit at the intersection of business strategy and cutting-edge technology, translating the power of the WRITER platform into measurable P&L impact and helping executives navigate the shift to an AI-first operating model. This is a rare opportunity to build the playbook for enterprise AI transformation. You won’t just be managing accounts; you’ll be driving the next industrial revolution by helping C-suite leaders move from AI experimentation to full-scale value realization. Your work will directly influence WRITER's product roadmap and help define how the world’s biggest brands use superintelligence to expand human capacity. Thi

🚀 About WRITER WRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI. Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI. 📐 About the role We are looking for a visionary and execution-oriented AI transformation lead to serve as a high-impact partner for our most strategic Fortune 100 accounts. In this role, you’ll be the architect of change, moving beyond simple software implementation to help the world's largest organizations fundamentally rethink how they work. You’ll sit at the intersection of business strategy and cutting-edge technology, translating the power of the WRITER platform into measurable P&L impact and helping executives navigate the shift to an AI-first operating model. This is a rare opportunity to build the playbook for enterprise AI transformation. You won’t just be managing accounts; you’ll be driving the next industrial revolution by helping C-suite leaders move from AI experimentation to full-scale value realization. Your work will directly influence WRITER's product roadmap and help define how the world’s biggest brands use superintelligence to expand human capacity. Thi

🚀 About WRITER WRITER is where the world's leading enterprises orchestrate AI-powered work. Our vision is to expand human capacity through superintelligence. And we're proving it's possible – through powerful, trustworthy AI that unites IT and business teams together to unlock enterprise-wide transformation. With WRITER's end-to-end platform, hundreds of companies like Mars, Marriott, Uber, and Vanguard are building and deploying AI agents that are grounded in their company's data and fueled by WRITER's enterprise-grade LLMs. Valued at $1.9B and backed by industry-leading investors including Premji Invest, Radical Ventures, and ICONIQ Growth, WRITER is rapidly cementing its position as the leader in enterprise generative AI. Founded in 2020 with office hubs in San Francisco, New York City, Seattle, Austin, Chicago, and London, our team thinks big and moves fast, and we're looking for smart, hardworking builders and scalers to join us on our journey to create a better future of work with AI. 📐 About the role This is where security meets innovation at enterprise scale. As a staff security engineer, applications at WRITER, you'll be building the security foundations that protect the AI systems powering some of the world's most recognizable brands. You'll work at the intersection of application security, AI infrastructure, and developer enablement—partnering with engineering teams to embed security into every line of code while ensuring our platform remains both powerful and trustworthy. The opportunity is massive: you'll help define how enterprise AI applications are secured, from threat modeling our LLM architectures to building automated security controls that scale across our growing platform. This isn't about saying "no"—it's about finding creative ways to say "yes, and here's how we do it securely." You'll tackle challenges that most security engineers never encounter: securing AI agents, protecting training data pipelines, and designing controls for systems tha