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Senior Software Developer Jobs (On-site work)

62 Job Offers

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Senior Software Developer (.NET/C#)
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Join 3Shape as a Senior .NET/C# Developer in Copenhagen to build cutting-edge patient engagement solutions for global dental health. You’ll own the full software lifecycle, design B2B/B2C APIs, and leverage Azure in a new, technically focused team. Enjoy a vibrant international environment, daily...
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Denmark , Copenhagen
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Not provided
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3Shape
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Senior Software Developer
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Senior Software Developer role in Toronto, Canada. Requires 10+ years in large-scale web applications, Java, and SQL, plus 5+ years of RESTful API expertise. You will translate specs into tested code, troubleshoot technical issues, and support migrations. Earn a competitive rate with potential fo...
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Canada , Toronto
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554.83 - 590.41 CAD / Day
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Randstad
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Senior Software Developer
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Senior Software Developer sought for an enterprise contract in Toronto, leading GIS-driven application design and engineering. You will bridge 3-tier architectures with spatial platforms, developing scalable web-mapping services using ArcGIS, Python (ArcPy), and .NET. This onsite role demands exp...
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Canada , Toronto
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Randstad
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Senior Software Developer - CRM
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Senior Software Developer – CRM needed for an 11-month contract in Toronto. You will design and implement Oracle Siebel IP18+ solutions, focusing on Open UI, EIM/EAI integration, and OBIEE/PowerBI reporting. Requires 3+ years of Siebel experience, certification, and expertise in HTML5, CSS, jQuer...
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Canada , Toronto
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543.70 - 579.46 USD / Day
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Randstad
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Senior Software Developer
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Senior Software Developer needed for a 7-month onsite contract in Toronto. Leverage 10+ years of Java, Oracle/SQL, and REST API expertise to build large-scale web applications. Must know JWT, OAuth 2.0, and SSL. Responsibilities include coding, unit testing, and troubleshooting. Rate: $554.83–$59...
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Canada , Toronto
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Not provided
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Randstad
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Senior Level Software Developer
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Senior Level Software Developer needed in St. Louis for U.S. citizens with an active TS/SCI clearance. Requires a BS in Computer Science or related field plus 8+ years of experience in Java, JavaScript, or Python, micro-services, and cloud-native development (AWS/Azure). You will modernize applic...
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United States , St. Louis
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DCS Corporation
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Senior Software Developer
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Senior Software Developer needed for a 15-month onsite contract in North York. Leverage 10+ years of Cognos 11.x expertise to design, develop, and support 40+ Panorama Enhanced Analytic Reports. Must have public sector healthcare experience and knowledge of OPS Enterprise Architecture. Earn a com...
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Canada , North York
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554.83 - 590.41 CAD / Day
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Randstad
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Senior Software Developer - CRM
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Senior Software Developer - CRM role in North York, Canada, blending advanced Siebel CRM configuration with enterprise BI and data analytics. Requires 10+ years Siebel expertise, IP18+, integration with Adobe AEM/J2EE, and proficiency in PowerBI, SQL, and Azure Data Stack. You’ll lead CRM develop...
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Canada , North York
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478.19 - 515.08 CAD / Day
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Randstad
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Senior Java Software Engineer – Developer
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Senior Java Software Engineer sought by Boeing to join the Advanced Ground Architecture team in Herndon, VA, Seal Beach, CA, El Segundo, CA, or Colorado Springs, CO. Requires an active Top Secret clearance, 5+ years of Java, C++, Angular/ReactJS, and Agile experience. Lead DevSecOps, debug comple...
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United States , Herndon; Seal Beach; El Segundo; Colorado Springs
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Boeing
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Senior Software Developer - CRM
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Senior Software Developer - CRM needed for a 7-month onsite contract in Toronto. You will configure and support complex Oracle Siebel Public Sector solutions, integrating with Siebel EAI, Web Services, and BI Publisher. Requires 10+ years of hands-on Siebel experience and expertise in troubleshoo...
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Canada , Toronto
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555.49 - 591.05 CAD / Day
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Randstad
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Senior Software Developer
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Senior Software Developer with 5+ years of enterprise experience sought for a Toronto-based role. You will design and extend Microsoft Dynamics 365 CE and F&O, building integrations and scalable data flows using C#, JavaScript, and Power Platform. Key requirements include expertise in Dataverse, ...
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Canada , Toronto
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Randstad
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Senior Software Developer - ETL
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Senior Software Developer – ETL needed in Toronto to lead Azure data lakehouse migration for the OPGT Modernization program. You will design automated pipelines in Azure Synapse, integrate Dynamics 365 CE/F&O data, and migrate documents to OpenText. Requires 5+ years ETL experience, Azure Synapse...
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Canada , Toronto
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Randstad
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Senior Software Developer - ETL
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Senior Software Developer – ETL needed in Toronto to lead Azure data lakehouse migration for the OPGT Modernization program. You will design automated pipelines in Azure Synapse, integrate Dynamics 365 CE/F&O data, and migrate documents to OpenText. Requires 5+ years ETL experience, Azure Synapse...
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Canada , Toronto
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Randstad
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Senior Software Developer - ReactJs (VOIS)
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Senior ReactJS Developer sought to build scalable, secure web applications in Cairo, Egypt. You’ll drive full-stack development, mentor peers, and shape digital solutions using React, PWA, and modern JavaScript. Requires 4+ years’ experience, strong frontend skills, and collaborative teamwork. Be...
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Egypt , Cairo
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Vodafone
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Senior Software Developer - Full Stack
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Senior Full Stack Developer needed for a 10-month contract in Toronto, Canada. You will build and govern a scalable Design System using React, Angular, and Next.js. Key requirements include expertise in Figma, WCAG/AODA compliance, REST APIs, and OAuth. This role offers the chance to lead CI/CD p...
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Canada , Toronto
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565.97 - 601.35 CAD / Day
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Randstad
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Senior Software Developer
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Senior Software Developer role in Toronto, Canada. You will lead the development of high-performing applications, optimizing code across multi-tier J2EE platforms and cloud analytics. Mastery of Oracle databases, complex SQL, and Microsoft Databricks dashboards is essential. This position offers ...
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Canada , Toronto
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Randstad
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Senior Software Developer - Full Stack
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Senior Full Stack Developer sought in Toronto to lead enterprise web architecture for the DDR project. Requires 10+ years in J2EE, Spring Framework, and DevOps with IBM UrbanCode. Build high-performance React frontends and resilient RESTful/SOAP APIs. Drive automated deployment and full-stack imp...
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Canada , Toronto
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Randstad
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Senior Software Developer
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Senior Software Developer needed for an onsite role in Des Moines, Iowa. This permanent position offers a chance to build and integrate AI-driven solutions using SQL, Python, and C# in a brand-new office. Ideal for experienced backend or full-stack engineers with 7+ years of expertise. Enjoy a $1...
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United States , Des Moines
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120000.00 USD / Year
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Robert Half
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Senior Software Developer
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Senior Software Developer sought for a dynamic Noida-based team. Leverage 7-10 years of experience and deep Java 8 expertise to design scalable applications using Spring, Hibernate, and microservices. Collaborate on high-quality solutions, mentor juniors, and drive architectural decisions. Compet...
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India , Noida
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Tech Mahindra
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Senior Software Engineer (.NET Full Stack Developer)
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Senior Software Engineer (.NET Full Stack Developer) sought by Wells Fargo in Bengaluru, India. Leverage 4+ years of experience in .NET 8, Python, Angular, and SQL to lead complex initiatives. Design and deploy cloud-native solutions using Docker, Kubernetes, and OpenShift, while driving event-dr...
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India , Bengaluru
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Not provided
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Wells Fargo
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About the Senior Software Developer role

Explore senior software developer jobs and discover a pivotal career at the intersection of deep technical expertise and strategic leadership. A senior software developer is far more than just an experienced coder; they are a cornerstone of the engineering team, responsible for designing robust systems, guiding technical direction, and mentoring less experienced colleagues. This role typically involves taking ownership of significant components or entire applications, ensuring they are scalable, maintainable, and aligned with business objectives.

Professionals in these roles generally shoulder a comprehensive set of responsibilities. They architect and implement complex software solutions, making critical decisions on technologies, frameworks, and design patterns. A key duty is writing high-quality, efficient, and secure code while establishing and enforcing coding standards and best practices across the team. They lead the full software development lifecycle, from requirement analysis and system design through to deployment, monitoring, and iterative enhancement. Collaboration is central, as they frequently liaise with product managers, business stakeholders, and other engineering teams to translate business needs into technical specifications. Furthermore, senior developers are expected to troubleshoot and debug intricate system issues, optimize application performance, and proactively advocate for process and technological improvements. Mentoring junior and mid-level developers, conducting code reviews, and contributing to a culture of continuous learning are also hallmarks of the position.

The typical skill set for senior software developer jobs is both broad and deep. Mastery of one or more core programming languages (such as Java, C#, Python, JavaScript, or Go) and their associated ecosystems is fundamental. Equally important is a strong grasp of software architecture principles, including microservices, domain-driven design, and API design (REST, GraphQL). Experience with modern development practices like Agile/Scrum, DevOps, CI/CD pipelines, and cloud platforms (AWS, Azure, GCP) is commonly required. Proficiency with database technologies, both relational and non-relational, and knowledge of containerization tools like Docker and Kubernetes are standard expectations. Beyond technical prowess, successful senior developers possess exceptional problem-solving abilities, effective communication skills for explaining complex concepts to diverse audiences, and strong project management capabilities to drive initiatives to completion. While requirements vary, most positions seek candidates with a bachelor’s degree in computer science or a related field (or equivalent experience) and a minimum of 5-8 years of progressive hands-on development experience, including demonstrable leadership in technical projects.

Ultimately, senior software developer jobs represent an opportunity to have an outsized impact on a company's technology and product trajectory. It is a career path for those who are passionate about building excellent software, leading by example, and driving innovation from within the engineering organization.