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Linux System Administrator Jobs

746 active opportunities · Updated for October 2026

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PE
1mo ago

Title: Technical Lead- QA About Us: Paytm is India's leading mobile payments and financial services distribution company. Pioneer of the mobile QR payments revolution in India, Paytm builds technologies that help small businesses with payments and commerce. Paytm’s mission is to serve half a billion Indians and bring them to the mainstream economy with the help of technology. Expectations/ Requirements · Should have experience in Web & Mobile Testing (Android / iOS) and Device testing methodologies. · Analyzing business requirements to determine the test strategy covered by manual testing. · Must have strong knowledge of the programming language (Java). · Must have worked on automation scripts and able to establish an automation framework · Must have experience in Maven, Jenkins, TestNG · Experience of Selenium WebDriver is preferred · Basic concept of database testing. · Familiarity with both Linux and Windows environments. · Knowledge of the BDD framework or cucumber framework. · Knowledge of API Testing tools. · Should have knowledge of JIRA. · Experience with working in Agile methodology. Superpowers/ Skills that will help you succeed in this role · High level of drive, initiative and self-motivation · Ability to take internal and external stakeholders along · Understanding of Technology and User Experience · Love for simplifying · Growth Mindset · Willingness to experiment and improve continuously Why join us · A collaborative output driven program that brings cohesiveness across businesses through technology · Improve the average revenue per use by increasing the cross-sell opportunities · A solid 360 feedback from your peer teams on your support of their goals · Respect, that is earned, not demanded from your peers and manager Compensation: If you are the right fit, we believe in creating wealth for you .With envi

javagitlinux
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M
8 days ago

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Senior Software Engineer Overview Mastercard’s Network & Digital Payments group creates meaningful digital payment experiences for consumers, merchants, issuers, and partners at global scale. The Global Product Engineering team builds foundational payment solutions that are secure, resilient, scalable, and operationally reliable. This role is for a Senior Software Engineer who will contribute to the design, development, validation, automation, and operability of high-quality software solutions. The ideal candidate brings strong software engineering fundamentals, hands-on Java development experience, and a quality-first mindset, with the ability to build automation frameworks, contribute to application design, improve engineering practices, and support production readiness. Role As a Senior Software Engineer, you will independently execute key elements of software engineering projects and processes by applying strong technical knowledge, engineering best practices, and problem-solving skills. You will contribute to building and maintaining scalable software solutions, with a focus on testability, automation, performance, security, resiliency, and operational excellence. Key Responsibilities • Design, develop, and maintain high-quality software components, automation frameworks, and engineer

javakubernetesgit
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Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Lead Software Engineer - Java Are you an experienced software engineer who enjoys solving complex technical challenges and helping others build better solutions? As a Lead Software Engineer, you will design, build, and operate secure, scalable, and resilient technology that supports important payment services. You will combine hands-on development with technical leadership and work closely with teams across product, operations, architecture, infrastructure, risk, and customer-facing functions. Mastercard Payment Services: In Mastercard Payment Services, you will contribute to critical European payment clearing and settlement services. This includes real-time and batch clearing, instant payments, participant-facing services, liquidity and settlement capabilities, reporting, and related payment infrastructure. You will help ensure these services are reliable, secure, and resilient by applying strong engineering practices, automation, production ownership, and continuous improvement. What you will do: • Design, build, integrate, and improve secure, scalable applications and services. • Take ownership of complex service issues and coordinate resolution across teams. • Work with product partners and stakeholders on priorities, trade-offs, and technical roadmaps. • Improve delivery quality through a

javareactdocker
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Our Purpose Mastercard powers economies and empowers people in 200&#43; countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Senior Software Engineer (Java) Job Description Summary Who is Mastercard? Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all. Overview • The Decision Management program enables intelligent decision-based products through streaming analytics with the ability to govern these decisions and manage their outcomes with business agility. • This program leverages business rules & AI engines, a streaming big data cluster, an in-memory data grids, APIs, & UIs to deliver real time decisions at global scale • This person will be responsible for mentoring the team as well as stay hands on. We are looking for a Senior Software Developer to join our DMP team in Vancouver office.<

javasqlkubernetes
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C
10 days ago

We’re building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health®, you’ll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in everything we do. Join us and be part of something bigger – helping to simplify health care one person, one family and one community at a time. The Release Engineer is responsible for implementing and supporting automated software delivery processes that enable reliable, secure, and repeatable deployments across development, test, non-production, and production environments. This role serves as a technical bridge between Software Engineering, Quality Engineering, Infrastructure, and Operations teams to improve deployment speed, stability, and operational efficiency. The Release Engineer is responsible for implementing and supporting automated software delivery processes that enable reliable, secure, and repeatable deployments across development, test, non-production, and production environments. This role serves as a technical bridge between Software Engineering, Quality Engineering, Infrastructure, and Operations teams to improve deployment speed, stability, and operational efficiency. Key Responsibilities Develop, support, and maintain automated CI/CD pipelines to streamline application delivery. Standardize build, release, and deployment processes across applications and platforms. Establish repeatable, auditable, and traceable release management practices to ensure deployment consistency and compliance. Manage and support Git-based source control, branching strategies, and release workflows. Integrate automated testing, quality gates, security controls, and compliance checks into deploym

pythonawsazure
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S
10 days ago

About Supabase Supabase is the Postgres development platform, built by developers for developers. We provide a complete backend solution including Database, Auth, Storage, Edge Functions, Realtime, and Vector Search. All services are deeply integrated and designed for growth. About the Role We’re looking for an experienced, fluent Japanese speaking Database Support Engineer to join our Support Team and help developers unblock complex issues, build more reliably, and get the most out of the Supabase platform. You’ll work closely with customers and engineering, helping us improve product quality and developer experience based on real-world usage. This role is ideal for someone who thrives in async, fast-paced environments and is excited about building developer tools that scale to millions. What You’ll Be Responsible for In this role, you’ll: Investigate and resolve advanced customer issues across Postgres, Auth, RLS, Storage, Realtime, Edge Functions, and client libraries. Provide consultative, proactive advice to optimize workloads, avoid common pitfalls, and tailored advice to our most advanced users. Reproduce bugs, isolate root causes, propose workarounds, and escalate to engineering with solid repro steps. Ask smart, targeted questions that turn incomplete reports into actionable cases. Communicate clearly and empathetically with customer users of all levels—especially during high-impact or time-sensitive situations. Spot patterns across tickets and recommend improvements to docs, tooling, and the product itself. Mentor junior team members and help raise the overall bar for support quality. You Might Be a Good Fit If You You have 6+ years in technical support, backend engineering, SRE, or similar. You know PostgreSQL deeply—autovacuum behavior, WAL growth, long-running transactions, table bloat, and other internals. You’re strong in high-performance SQL and query optimization. You’re comfortable troubleshooting complex setups, including multi-tenant schema patte

REMOTEsqlpostgresqlaws
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M
10 days ago

Our Purpose Mastercard powers economies and empowers people in 200&#43; countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Lead Software Engineer - Java Are you an experienced software engineer who enjoys solving complex technical challenges and helping others build better solutions? As a Lead Software Engineer, you will design, build, and operate secure, scalable, and resilient technology that supports important payment services. You will combine hands-on development with technical leadership and work closely with teams across product, operations, architecture, infrastructure, risk, and customer-facing functions. Mastercard Payment Services: In Mastercard Payment Services, you will contribute to critical European payment clearing and settlement services. This includes real-time and batch clearing, instant payments, participant-facing services, liquidity and settlement capabilities, reporting, and related payment infrastructure. You will help ensure these services are reliable, secure, and resilient by applying strong engineering practices, automation, production ownership, and continuous improvement. What you will do: • Design, build, integrate, and improve secure, scalable applications and services. • Take ownership of complex service issues and coordinate resolution across teams. • Work with product partners and stakeholders on priorities, trade-offs, and technical roadmaps. • Improve delivery quality through a

javareactdocker
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R
Remote
📍 EMEA• Remote
11 days ago

About Remote Remote is solving modern organizations’ biggest challenge – navigating global employment compliantly with ease. We make it possible for businesses of all sizes to recruit, pay, and manage international teams. With our core values at heart and future focused work culture, our team works tirelessly on ambitious problems, asynchronously, around the world. You can find Remoters working from 6 different continents (Antarctica left to go!) and all of our positions are fully remote. With Innovation as one of the core values, we have built Automation and AI capabilities into the requirements for every role. We encourage every member of the Remote team to bring their talents, experiences and culture to the table to help us build the best-in-class HR platform. If you are energetic, curious, motivated and ambitious, be part of our world. Apply now and define the future of work! What this job can offer you Remote's SRE team exists so that our engineers can move quickly and our customers get a product that stays up. The team owns Kubernetes, AWS, PostgreSQL, CI infrastructure, our observability stack and the reliability practices that sits on top of all of it. We are looking for a Team Leader to run that team. This is a 60% IC, 40% leadership role. You will own the career development of your reports, steer the teams focus using judgment against the company goals, and you will be the spokesperson for the team across engineering. You will also stay close enough to the technical work to set direction with credibility and to know when something is going wrong before it is escalated to you. Reliability practice at Remote is maturing rather than mature. Our SLO framework is live on its first few teams and needs to reach the rest, there is real work to do on how we balance operational load against project delivery. If you want a team where the foundations are in place and the interesting problems are still open, this is that team. What you bring People leadership Yo

REMOTEpythonjavanode.js
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M
11 days ago

Our Purpose Mastercard powers economies and empowers people in 200&#43; countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential. Title and Summary Senior Software Engineer Who is Mastercard? We work to connect and power an inclusive, digital economy that benefits everyone, everywhere, by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships, and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. We cultivate a culture of inclusion for all employees that respect their individual strengths, views, and experiences. We believe that our differences enable us to be a better team – one that makes better decisions, drives innovation, and delivers better business results About the Role Senior Software Engineers at Mastercard design and code artificial intelligence, cloud, and machine learning platforms that provide mission-critical insights to many of the world’s leading organizations and governments. As a Senior Software Engineer, you will deliver these products and solutions with speed and agility as part of a small team. This will involve developing high-performing, highly scalable software solutions and products for some of the world’s top brands. Specific tasks vary depending on the project and the busi

javasqlpostgresql
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L
12 days ago

Are you looking for an opportunity to help solve one of today's biggest business challenges? AI is changing the pace of business, and organizations everywhere are struggling to help their workforce, partners, and customers keep up. At Litmos, we're building the Learning Acceleration Platform that helps organizations build human capability faster—and we're looking for people who are passionate about making a meaningful impact for customers while growing alongside a collaborative, people-first team. Litmos is the Learning Acceleration Platform that helps organizations build capability faster, adapt at the speed business changes, and scale learning to anyone, anywhere. Combining an intuitive platform, AI-powered capabilities, trusted content, expert services, and a broad ecosystem of integrations, Litmos helps organizations accelerate workforce productivity, improve customer adoption and retention, enable high-performing partners, and reduce organizational risk through continuous learning. Organizations such as Hewlett Packard Enterprise, Graco, Sabre, and Russell Mineral Equipment trust Litmos to accelerate learning across their workforce, partners, and customers. Today, more than 11K customers with 30 million learners across 150 countries and 37 languages use Litmos to build the capabilities their organizations need to succeed. Backed by Francisco Partners, one of the world's leading technology investment firms, we're investing in the future of learning—and the people who are building it. Learn more at www.litmos.com . About the Role We are looking for a senior, self-directed SOC Analyst to join our lean global security operations team based in Pune. As the sole security operations resource during non-US business hours, you will own the full spectrum of alert triage, incident investigation, and response for your shift. This role requires someone who can function as both an L2 investigator and an L3 responder depending on the situation, without rel

pythonawsazure
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W
12 days ago

WPP is the trusted growth partner for the world’s leading brands. We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and expert strategic counsel in a single company – powered by exceptional talent and our agentic marketing platform, WPP Open, to help our clients navigate change, capture opportunity and deliver transformational growth. We work with the world's most valuable brands and have global reach across 100+ markets, with deep local expertise. Our people are the key to our success. We're committed to fostering a culture of creativity, belonging and continuous learning, attracting and developing the brightest talent, and providing exciting career opportunities that help our people grow. For more information, visit WPP.com. Why we're hiring: This role sits at the intersection of production operations, workflow engineering and automation delivery. The Production Workflow Engineer translates real production requirements into reliable scripted, low-code and no-code workflow solutions that improve throughput, reduce manual effort and support consistent delivery across global production environments. Working under the direction of the Engineering Management to deliver workflow solutions, maintain operational stability and support business transformation initiatives, the role will bring engineering expertise for the implementation, support and continuous improvement of production workflow platforms. You will support production workflow environments where business-critical processes depend on a mix of commercial workflow platforms, scripted automation, integration services, file movement tools and low-code or no-code configuration. The engineer is expected to understand both the operational production process and the technical mechanisms that enable it, ensuring workflow changes are safe, supportable and aligned to produc

javascriptpythongit
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Razorpay is one of India’s leading full-stack financial technology companies, powering the way businesses move, manage, and grow money. Founded in 2014 by Harshil Mathur and Shashank Kumar with a simple vision - to simplify payments for Indian businesses - we’ve since grown into a fintech powerhouse driving India’s digital payment revolution. Razorpay powers millions of businesses with a smarter, scalable stack that goes beyond transactions to help them truly build and grow. From building AI-native agentic payments, to AI-assisted fraud detection and real-time risk intelligence to automated reconciliation, smart payouts, and predictive financial insights, we are embedding intelligence across our stack to make money movement faster, safer, and more efficient. In close collaboration with ecosystem partners - including banks, networks, regulators - we are pioneering industry-first solutions that are shaping the next era of fintech Across India, Singapore and Malaysia, our products span everything from seamless checkouts to payroll automation - powering a fintech ecosystem that’s redefining how money moves across Asia. Today, that ecosystem supports everyone from early-stage startups to some of India’s largest enterprises, enabling them to accept, process, and disburse payments at scale while expanding into new ways of managing money more efficiently. Our scale speaks volumes: Razorpay processes $180+ billion in annualized transactions, powering leading businesses like Airbnb, Facebook, WhatsApp, Airtel, CRED, BookmyShow, Zomato, Swiggy, Lenskart, Mirae Asset Capital markets, Indian Oil, National Pension Scheme - and over 100 of India’s unicorns. With strong roots in India and growing operations in Southeast Asia, we are shaping the next chapter of financial technology across the region. We are backed by global investors including GIC, Peak XV Partners (formerly Sequoia Capital India & SEA), Tiger Global, Ribbit Capital, Matrix Partners, MasterCard, and Salesforce V

pythonmysqlaws
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F
FalconX
📍 Bengaluru• Full-time
16 days ago

Who are we? FalconX is a pioneering team of operators, investors, and builders committed to revolutionizing institutional access to the crypto markets. Operating at the intersection of traditional finance and cutting-edge technology, FalconX addresses the industry's foremost challenges: Navigating the digital asset market can be complex and fragmented, with limited products and services that support trading strategies, structures, and liquidity found in conventional financial markets. As a comprehensive solution for all digital asset strategies from start to scale, FalconX operates as the connective tissue empowering clients with seamless navigation through the ever- evolving cryptocurrency landscape. Senior Software Engineer - Risk Location: Bengaluru (Onsite) Impact You’ll architect and build the next-generation risk solutions for FalconX and its clients. FalconX is the institutional gateway to digital asset markets. FalconX processes more than $1T+ in trading volume across spot and derivative instruments, has financed $2.5B+ in loan originations and is the 1st CFTC-registered swap dealer focused on cryptocurrency derivatives. You will evolve FalconX’s risk technology to be best-in-class. You will work on cutting-edge technology with the right balance of speed, accuracy and reliability. Well-reputed financial institutions and crypto firms will trust and rely on your solutions for their day-to-day work. You will help unlock increased business potential and opportunities for FalconX and our clients. Responsibilities Develop, maintain and enhance FalconX’s proprietary risk management tools, infrastructure, risk data, and processes. Architect and build scalable, robust, performant risk solutions for institutional customers and internal teams. Work closely with multiple members of the risk team to develop, maintain and improve the risk management stack. Coach and mentor teammates on supporting and maintaining FalconX’s risk solutions. Requirements Degree in Compu

pythonawsgit
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**English version below** Doit être local à Montréal Vous souhaitez travailler dans le domaine de la technologie au sein d'une banque d'investissement? Nous recherchons un Développeur Python expérimenté , doté d’une solide expérience des systèmes distribués à grande échelle et de Kubernetes , pour rejoindre une équipe dynamique chez l’un de nos clients. Nous offrons l’opportunité de relever des défis techniques stimulants tels que : La conception et l’exploitation de plateformes distribuées à faible latence pour le traitement de grands volumes de données de trading en temps réel. La mise en place de capacités élastiques permettant de gérer d’importants volumes de données, y compris les pics de charge. Le développement et la modernisation d’outils destinés à la gestion des ressources cloud, afin d’accélérer la mise sur le marché ( time-to-market ) de nouvelles fonctionnalités. À propos de mtrois : Depuis 2010, mtrois aide ses clients à résoudre leurs défis commerciaux et technologiques. Nous sommes un cabinet de conseil en technologie et en affaires, avec une main-d'œuvre mondiale qui réalise des projets IT et business majeurs pour certaines des plus grandes institutions financières au monde. Services principaux : Conseil et accompagnement Services managés Programme Alumni Graduate Programme Alumni Pro Nous avons une présence mondiale et sommes experts dans la fourniture de services de qualité exceptionnelle à notre clientèle, couvrant les domaines suivants : Risque, Réglementation & Conformité ; Produits fournisseurs ; Support applicatif ; Développement applicatif ; Cybersécurité & Sécurité de l'information ; Science des données et DevOps. Notre programme Expert offre aux professionnels expérimentés un accès à des postes de haut niveau dans les secteurs de la technologie, de la finance, de l’aviation et de l’assurance. Rejoignez-nous pour travailler sur des projets technologiques de pointe, allant des plateformes de trading internationales aux applications c

pythonsqlkubernetes
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**English version below** Doit être local à Montréal Vous souhaitez travailler dans le domaine de la technologie au sein d'une banque d'investissement? Nous recherchons une personne pour rejoindre une équipe dynamique en tant qu’ Ingénieure Fiabilité de Site (Site Reliability Engineer) pour l’un de nos clients. Le Site Reliability Engineering (SRE) est une discipline orientée production, axée sur l’amélioration de la disponibilité des services systèmes, de l’observabilité, de l’évolutivité, de la performance et de la fiabilité des produits technologiques, en appliquant de solides principes d’ingénierie logicielle et en adoptant les technologies et outils les plus récents. Nous serions ravis de vous rencontrer si vous : Vous intéressez aux systèmes distribués et au travail sur des services hautement évolutifs, fiables et à grande échelle. Aimez évoluer dans un environnement dynamique et n’avez pas peur de changer les choses pour les améliorer. Appréciez les nouveaux défis technologiques et la résolution de problèmes complexes. Croyez qu’une équipe qui collabore efficacement est véritablement plus intelligente que la personne la plus brillante qui la compose. Aspirez à évoluer en tant que personne, coéquipier·e et ingénieur·e. Faites preuve de détermination, de motivation et d’un profond sens des responsabilités. À propos de mtrois : Depuis 2010, mtrois aide ses clients à résoudre leurs défis commerciaux et technologiques. Nous sommes une société de conseil en technologie et en affaires avec une main-d'œuvre mondiale qui réalise des projets commerciaux et informatiques significatifs dans certaines des plus grandes organisations de services financiers du monde. Services principaux Consulting et Conseil Services gérés Programme de diplômés Alumni Programme Alumni Pro Nous avons une présence mondiale et sommes experts dans la fourniture d'une qualité exceptionnelle à notre base de clients, offrant des services de conseil dans les domaines du risque, de la réglementa

pythonmongodbdocker
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