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Senior Software Engineer - Core Jobs

3171 Job Offers

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Senior Software Engineer
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Join Microsoft in Vancouver as a Senior Software Engineer. Work on impactful Azure projects, directly shaping core observability services nearing GA. This technical role blends hands-on coding in C#/Java/Python with strategic customer engagement and on-call duties. Drive production reliability an...
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Canada , Vancouver
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114400.00 - 203900.00 CAD / Year
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Microsoft Corporation
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Senior Software Engineer - Network Engineer
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Join Microsoft's Cloud & AI organization as a Senior Network Engineer in Redmond. Design and secure Azure network infrastructure, leveraging automation with Python and Bicep. This role requires deep cloud networking expertise and a passion for building life-changing, secure innovations.
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United States , Redmond
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119800.00 - 234700.00 USD / Year
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Microsoft Corporation
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Senior Software Engineer
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Join our Barcelona team as a Senior Software Engineer on the core C&E platform. Design and own scalable backend systems, data pipelines, and APIs that power customer segmentation and personalization. We seek an engineer experienced in SaaS architecture and high-throughput systems. Enjoy a hybrid ...
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Spain , Barcelona
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Not provided
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Bsport
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Senior Software Engineer
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Join Microsoft's Cloud & AI Security team in Redmond as a Senior Software Engineer. Design and scale secure cloud services using C++, C#, Python, or Java. Drive technical deliverables and leverage telemetry for live-site engineering in a customer-focused role.
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United States , Redmond
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119800.00 - 234700.00 USD / Year
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Microsoft Corporation
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Senior Software Engineer
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Join our team in Pisa, Italy, as a Senior Software Engineer. Develop next-generation Model-Based Design (MBD) tools for simulation, code generation, and AI integration. We seek an expert in Java, Python, and Model-Driven Engineering (MDE) with AI/LLM framework experience. Collaborate with PhDs on...
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Italy , Pisa
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50000.00 - 65000.00 EUR / Year
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Randstad
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Senior Software Engineer
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Join Microsoft AI Monetization as a Senior Software Engineer in Redmond. Design and build scalable, privacy-preserving backend systems and data pipelines using C# or Java. Integrate secure data collaboration platforms like Azure Confidential Compute to power next-generation advertising measuremen...
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United States , Redmond
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119800.00 - 234700.00 USD / Year
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Microsoft Corporation
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Senior Software Engineer
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Join Microsoft's Azure Data team in Vancouver as a Senior Software Engineer. Develop industry-leading products like Power BI, Fabric, and Cosmos DB to build the data platform for the AI era. Utilize your expertise in C#, Java, Python, or similar to architect scalable, full-stack solutions. This r...
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Canada , Vancouver
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114400.00 - 203900.00 CAD / Year
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Microsoft Corporation
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Senior Software Engineer, Query Processing
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Join Firebolt's Munich R&D team as a Senior Software Engineer in Query Processing. Design and build our high-performance, distributed C++20 query engine and storage layer. You will work on cutting-edge projects like vectorized execution, open table formats, and AI integration. Requires 5+ years o...
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Germany , Munich
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120000.00 - 150000.00 EUR / Year
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Firebolt
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Senior Software Engineer
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Join our team as a Senior Software Engineer to build a leading cloud-based research platform. You will design and maintain features using PHP, Laravel, and Vue.js in a remote-first model. We offer competitive compensation, flexible hours, and offices in Rzeszów.
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Poland , Rzeszów
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Edvantis
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Senior Software Engineer – Clinical Data Foundation
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Join our team in Hyderabad as a Senior Software Engineer for the Clinical Data Foundation. You will design and maintain scalable software using Python, React.js, and big data tech like Databricks. This role requires 8-12 years' experience, Agile methodology expertise, and offers work with clinica...
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India , Hyderabad
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Amgen
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Senior Software Engineer - Java
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Join our Warsaw team as a Senior Java Engineer. Design and build scalable, API-driven backend services using Spring Boot. You will own complex, CRUD-based systems end-to-end in a production environment. We seek 5-7 years of Java expertise with Docker/Kubernetes exposure.
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Poland , Warsaw
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Mastercard
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Senior Software Engineer
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Join a senior team building a new digital product from the ground up. This 0→1 role requires 5+ years of product experience, strong backend skills, and Flutter interest. Enjoy end-to-end ownership, pragmatic architecture, and comprehensive benefits in Eden Prairie.
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United States , Eden Prairie
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165000.00 - 175000.00 USD / Year
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Robert Half
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Senior Software Engineer - mainframe development
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Join Mastercard's Mainframe Services team in Ballerup as a Senior Software Engineer. You will design and modernize critical COBOL, JCL, and DB2 applications on z/OS, ensuring global transaction reliability. This role requires 5+ years of mainframe experience and offers work on cutting-edge modern...
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Denmark , Ballerup
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Mastercard
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Senior Software Engineer - COBOL
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Join our Danish Clearing team as a Senior Software Engineer. Maintain and develop critical clearing services using your COBOL, DB2 SQL, and mainframe expertise. Collaborate in an Agile team in Ballerup, driving improvements and mentoring colleagues. Fluent English and Danish are required.
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Denmark , Ballerup
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Mastercard
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Senior Software Engineer - AI Platform
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Join our team as a Senior AI Software Engineer in Spain. Implement and integrate cutting-edge LLMs and GenAI APIs to enhance real-world applications. We seek strong Python skills and hands-on RAG, prompt engineering, and CI/CD experience. Enjoy remote work, relocation support, health insurance, a...
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Spain
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Fever
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Senior Software Engineer
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Join our Engineering team as a Senior Software Engineer in Spain. Design, build, and own scalable services using RESTful APIs and relational databases. We value clean code, CI/CD, and offer remote work, relocation support, and great benefits.
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Spain
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50000.00 - 65000.00 EUR / Year
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Fever
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Senior Backend Software Engineer
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Join Kensho, S&P Global's AI innovation hub, as a Senior Backend Software Engineer. Design and develop customer-facing RESTful APIs, turning business requirements into technical plans. Enjoy top benefits like unlimited PTO, 100% paid medical premiums, and generous 401(k) matching in Cambridge or ...
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United States , Cambridge; New York
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150000.00 - 225000.00 USD / Year
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Kensho Technologies
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Senior Software Engineer
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Join Uber's Delivery Data Solutions team in Bangalore as a Senior Software Engineer. Design and own scalable data platforms, pipelines, and canonical datasets that power analytics and ML. Leverage your expertise in Java/Python/Go, Spark, and large-scale distributed systems to ensure data quality ...
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India , Bangalore
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Uber
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Senior Software Engineer II
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Join Confluent as a Senior Software Engineer II to architect our critical Stream Governance platform. You will design and deliver secure, highly available backend services using Java, Go, or Python in a cloud-native environment. This remote role offers equity, robust benefits, and the chance to l...
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197400.00 - 232000.00 USD / Year
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Confluent
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Senior Software Engineer
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Join YASH Technologies in Pune as a Senior Software Engineer. Leverage your 4+ years of Java and Full Stack expertise with React.js and AWS. Drive innovation in an inclusive, agile environment with flexible work arrangements and a supportive corporate culture.
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India , Pune
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YASH TECHNOLOGIES CONSULTING INC.
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About the Senior Software Engineer - Core role

Explore Senior Software Engineer – Core jobs and discover a pivotal career at the heart of technology innovation. A Senior Software Engineer in a Core capacity is a seasoned professional responsible for designing, building, and maintaining the fundamental, business-critical systems and services that power modern applications. This role is central to an organization's technical infrastructure, focusing on creating robust, scalable, and high-performance platforms that serve as the backbone for other products and features. Professionals in these jobs move beyond feature development to solve deep architectural challenges, ensuring the entire ecosystem is reliable, efficient, and secure.

Typical responsibilities for a Senior Core Software Engineer involve architecting and implementing scalable, cloud-native systems and distributed computing solutions. They write clean, maintainable, and thoroughly tested code with a strong emphasis on performance, reliability, and fault tolerance. A key part of the role is designing and optimizing data storage and retrieval mechanisms, often working with relational and non-relational databases. These engineers actively collaborate with cross-functional teams, including product management, DevOps, Site Reliability Engineering (SRE), and quality assurance, to define technical roadmaps and operational excellence. They are also tasked with mentoring junior engineers, conducting code reviews, and establishing best practices for the entire engineering organization.

The typical skill set and requirements for these high-impact jobs are comprehensive. Candidates generally possess 5+ years of progressive software development experience, with deep proficiency in one or more backend-oriented languages such as Go, Java, C#, or Python. A strong foundation in computer science fundamentals—data structures, algorithms, and system design—is essential. Practical expertise with modern cloud platforms (AWS, Azure, GCP), containerization (Docker), and orchestration (Kubernetes) is standard, as is experience with microservices architecture and API design. A security-first mindset and understanding of DevOps principles, including CI/CD pipelines and infrastructure as code, are highly valued. Beyond technical acumen, successful Senior Core Engineers demonstrate exceptional problem-solving abilities, a passion for elegant and scalable design, and the leadership skills to drive complex projects from conception to deployment. If you are seeking jobs where you build the foundational technology that enables everything else, a Senior Software Engineer – Core position represents the pinnacle of backend engineering challenges and opportunities.

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