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Senior Software Engineer - Core Jobs

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Senior Software Engineer
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Senior Software Engineer sought to design and build secure, air-gapped distributed database services for Microsoft’s sovereign cloud. Requires a Bachelor's in CS, 4+ years coding in C, C++, C#, Java, JavaScript, or Python, and an active U.S. Top Secret/SCI clearance with Polygraph. Based in Redmo...
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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 - M365 Copilot App
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Senior Software Engineer needed for Microsoft’s M365 Copilot App Platform team in Redmond, WA. You will lead middle-tier service design, develop APIs, and enhance backend infrastructure for AI-powered experiences across web, Windows, and Mac. Requires a Bachelor’s in CS and 4+ years coding in C#,...
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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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Senior Software Engineer sought to architect Azure’s next-generation Deployment Platform in Hyderabad, India. You will design and deliver highly available distributed cloud services, automating provisioning for Azure customers. Requires 7+ years in C, C++, C#, Java, JavaScript, or Python, plus 3+...
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India , Hyderabad
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Microsoft Corporation
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Senior Software Engineer - Communications Platform (Backend)
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Join Uber's Communications Platform as a Senior Backend Engineer in San Francisco or Sunnyvale. Architect and build highly scalable, mission-critical systems powering real-time and offline communications for millions of users. Requires 4+ years of experience, proficiency in Python, Go, or Java, a...
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United States , San Francisco, California; Sunnyvale, California
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202000.00 - 224000.00 USD / Year
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Uber
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Senior Software Engineer - Application Security
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Uber seeks a Senior Software Engineer for Application Security in Seattle to build autonomous systems that automate vulnerability detection and exploit validation. You will design secure AI implementations, leverage LLMs and agents, and develop security automation across Uber’s microrepositories....
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United States , Seattle
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202000.00 - 224000.00 USD / Year
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Uber
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Senior Software Engineer C++
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Senior Software Engineer C++ role in Chennai, India. Design and deliver high-performance backend systems using modern C++ (C++20, Boost, STL). Requires 8+ years of C++ development, Unix/Linux expertise, and CI/CD skills. Join global teams to build optimized, reliable components with exposure to D...
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India , Chennai
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Randstad
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Senior Embedded Software Engineer
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Senior Embedded Software Engineer sought in Warsaw to design, implement, and validate high-quality embedded software for industrial printers. Requires 7+ years of experience, advanced C++, Linux, and Agile/Scrum skills. Join a collaborative team driving innovation in print technology with opportu...
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Poland , Warsaw
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Dover Precision Components
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Senior Software Engineer - Applications
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Senior Software Engineer - Applications: Build and scale high-throughput backend services and messaging infrastructure for healthcare platforms. Leverage Ruby on Rails, JavaScript, and PostgreSQL to design reliable APIs and distributed systems. Drive technical ownership of complex features, from ...
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United States
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60.00 - 80.00 USD / Hour
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Signify Technology
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Senior Software Developer Engineer in Test
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Senior SDET role in Bengaluru, India, driving quality across Zuora’s Order, Billing, and Payments ecosystem. Requires 8+ years in test automation, Java OOP expertise, and AI-driven tool proficiency. You will develop frameworks, influence product quality, and collaborate across teams. Benefits inc...
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India , Bengaluru
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Zuora
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Senior Software Engineer
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Join Microsoft’s EngOps as a Senior Software Engineer in Atlanta, GA. Design scalable, AI-powered solutions for the Microsoft Cloud, enhancing reliability and customer trust. Requires a BS in CS + 4 years coding in C++, Java, or Python, with expertise in distributed systems and agile development....
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United States , Atlanta
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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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Senior Software Engineer sought by LGT, the world’s largest family-owned private banking group, to join the Software Engineering team in Melbourne or Sydney. You will customize the Avaloq Core Platform, manage the codebase, and drive automated testing. Requires extensive Avaloq development experi...
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Australia , Melbourne; Sydney
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LGT Gruppe Holding AG
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Senior Software Engineer Staff - Clearance Required
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Senior Software Engineer Staff sought by Lockheed Martin in Glen Burnie, MD to lead cyber security software development. Requires 14+ years SWE experience, a Bachelor’s in CS, and an active security clearance with polygraph. Design complex algorithms, integrate systems, and mentor teams. Enjoy wo...
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United States , Glen Burnie
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TieTalent
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(Senior) Software Engineer
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Medius seeks a (Senior) Software Engineer to join our Tunis team, driving Supplier Management capabilities. You will lead complex initiatives using .NET/C# and React, ensuring scalable, high-quality solutions. This role demands 5+ years of backend/full-stack experience, strong architecture skills...
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Tunisia , Tunis
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Medius
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Senior Software Engineer – Radiotherapy Positioning & Monitoring
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Senior Software Engineer sought for Brainlab’s R&D team in Munich, Germany. You will develop ExacTrac Dynamic, a high-precision radiotherapy positioning system using C++ and full-stack skills. Join an agile, international team to impact cancer treatment globally. Benefit from 30 vacation days, a ...
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Germany , Munich
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Brainlab
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Full-Stack Senior Software Engineer, GenAI Data Products and Platform (VP)
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Join Citi as a VP Full-Stack Senior Software Engineer to build 'Citi Assist', a GenAI assistant for global employees. You’ll own end-to-end features using Python, TypeScript, and React, working with data pipelines and cloud infrastructure (OpenShift/Kubernetes). Based in London, this role offers ...
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United Kingdom , London
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Citi
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Software Engineer Senior
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Amentum seeks a Senior Software Engineer to support the Space Force Range Contract in Melbourne, FL. You will design, develop, and test complex software for new and existing systems. Requires a STEM Bachelor’s degree, 8+ years of experience, and proficiency in Python, JavaScript, Windows, and Lin...
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United States , Melbourne
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135000.00 - 150000.00 USD / Year
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Amentum
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Senior Software Engineer
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Senior Software Engineer – Firefox Monitor. Build cloud-native Node.js/TypeScript systems at the intersection of security and privacy. Lead backend development, own GCP/AWS infrastructure, and optimize PostgreSQL at scale. Join Mozilla to protect millions from data breaches with top benefits and ...
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United States; Canada
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Mozilla
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Senior Digital Twin Software Engineer
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Senior Digital Twin Software Engineer sought to design and build core services, SDKs, and high-performance 3D runtime components for immersive digital twins. Requires 5+ years full-stack experience with Java, C#, C++, Python, or TypeScript/React, plus API design and systems integration skills. Ba...
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United States , Austin; Mountain View; Warren
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General Motors
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Senior Software Engineer
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Senior Software Engineer needed to lead embedded software development for GM’s Infotainment and Software Defined Vehicle solutions in Mountain View, CA. Requires 10+ years in Linux/Android, expertise in C, C++, Java, and system architecture. Drive OTA integration, agile development, and cross-fun...
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United States , Mountain View
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158000.00 - 241000.00 USD / Year
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General Motors
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Senior Software Engineer, CoreAI Workload Engines
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Senior Software Engineer, CoreAI Workload Engines – Redmond, WA. Optimize large-scale GPU inference for OpenAI and LLMs like Anthropic, Mistral, and Cohere. Drive performance improvements in C++, Python, and PyTorch for Azure’s global AI fabric. Join a team shipping trillions of inferences daily ...
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United States , Redmond
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119800.00 - 304200.00 USD / Year
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Microsoft Corporation
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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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