Senior Level Senior Fullstack Developer Jobs
Senior level senior fullstack developer jobs put experienced engineers in charge of architecture decisions, end-to-end system ownership, and the technical direction of the teams and products they lead. Openings are concentrated across Technology & Software, Consulting & Professional Services, and Investment & Asset Management, with 34% remote or hybrid availability, and employers like Citi, Anthropic, and BNY hiring at this level now.
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Senior Full Stack .NET GIS Developer ArcGIS Pro
Location: New York, NY - onsite for the first 3 months, hybrid thereafter
Schedule: Monday-Friday, 9:00 AM-5:00 PM ET, up to 35 billable hours per week
Engagement: Long-term consulting assignment, anticipated through March 31, 2028
Interview Requirement: Candidates must be available for an in-person interview at 120 Broadway in New York City.
Position Overview
Peer Consulting Resources is seeking a Senior Full Stack .NET GIS Developer to support a major application modernization initiative for the New York City Department of City Planning. This role will lead and contribute to the redesign of a data-maintenance platform using Microsoft .NET, C#, SQL Server, Azure, and ESRI ArcGIS technologies. The selected consultant will design and build full-stack solutions, extend ArcGIS Pro editing capabilities, integrate GIS data with enterprise applications, and guide other developers through implementation and knowledge transition.
Key Responsibilities
- Design, develop, test, and implement full-stack solutions using C#, VB.NET, ASP.NET, .NET Core, .NET 9.0, Entity Framework, MVC, JavaScript frameworks, and SQL Server.
- Lead and participate in application architecture, system design, coding, integration, release, and production support activities across the SDLC.
- Design, develop, and enhance ESRI ArcGIS Pro applications and custom extensions for editing linear and point-based spatial features.
- Build custom GIS tools, scripts, and workflows using ArcGIS Maps SDK for .NET, Python, ArcPy, Arcade, and ModelBuilder.
- Develop and optimize relational and spatial database structures, queries, and data-access components for performance, integrity, and usability.
- Build scalable cloud solutions using Azure services such as Azure App Service, Azure SQL Database and Azure Functions.
- Develop and integrate RESTful APIs and connect GIS solutions with enterprise systems and third-party platforms.
- Process, analyze, convert, validate, and maintain spatial data from multiple sources, including quality assurance and data updates.
- Collaborate with business stakeholders, interface designers, project managers, and technical teams to refine requirements and deliver user-centered solutions.
- Guide application developers, participate in code reviews, troubleshoot complex issues, and promote architecture, security, and development best practices.
- Create and maintain technical designs, workflows, support documentation, and user guides, and conduct knowledge-transfer sessions.
Senior Full Stack .NET GIS Developer ArcGIS Pro
Location: New York, NY - onsite for the first 3 months, hybrid thereafter
Schedule: Monday-Friday, 9:00 AM-5:00 PM ET, up to 35 billable hours per week
Engagement: Long-term consulting assignment, anticipated through March 31, 2028
Interview Requirement: Candidates must be available for an in-person interview at 120 Broadway in New York City.
Position Overview
Peer Consulting Resources is seeking a Senior Full Stack .NET GIS Developer to support a major application modernization initiative for the New York City Department of City Planning. This role will lead and contribute to the redesign of a data-maintenance platform using Microsoft .NET, C#, SQL Server, Azure, and ESRI ArcGIS technologies. The selected consultant will design and build full-stack solutions, extend ArcGIS Pro editing capabilities, integrate GIS data with enterprise applications, and guide other developers through implementation and knowledge transition.
Key Responsibilities
- Design, develop, test, and implement full-stack solutions using C#, VB.NET, ASP.NET, .NET Core, .NET 9.0, Entity Framework, MVC, JavaScript frameworks, and SQL Server.
- Lead and participate in application architecture, system design, coding, integration, release, and production support activities across the SDLC.
- Design, develop, and enhance ESRI ArcGIS Pro applications and custom extensions for editing linear and point-based spatial features.
- Build custom GIS tools, scripts, and workflows using ArcGIS Maps SDK for .NET, Python, ArcPy, Arcade, and ModelBuilder.
- Develop and optimize relational and spatial database structures, queries, and data-access components for performance, integrity, and usability.
- Build scalable cloud solutions using Azure services such as Azure App Service, Azure SQL Database and Azure Functions.
- Develop and integrate RESTful APIs and connect GIS solutions with enterprise systems and third-party platforms.
- Process, analyze, convert, validate, and maintain spatial data from multiple sources, including quality assurance and data updates.
- Collaborate with business stakeholders, interface designers, project managers, and technical teams to refine requirements and deliver user-centered solutions.
- Guide application developers, participate in code reviews, troubleshoot complex issues, and promote architecture, security, and development best practices.
- Create and maintain technical designs, workflows, support documentation, and user guides, and conduct knowledge-transfer sessions.
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Top Industries Hiring
- Technology & Software40
- Consulting & Professional Services9
- Investment & Asset Management6
- Science & Research3
- Electronics & Hardware3
Senior Level Senior Fullstack Developer Jobs: Frequently Asked Questions
How do I get a senior level senior fullstack developer job?
Employers hiring at the senior level look for engineers who have owned production systems end-to-end, made architectural decisions under real constraints, and mentored others through technical problems. Demonstrating that you have led cross-functional initiatives, driven technical roadmaps, and left measurable improvements in codebases gives you a clear edge. A portfolio of meaningful system design work matters more at this stage than raw years of experience.
Which companies hire senior level senior fullstack developers?
Companies hiring senior level senior fullstack developers right now include Citi, Anthropic, and BNY, based on current listings on Migrate Mate as of September 2026. Hiring at this level covers high-growth product companies, enterprise technology organizations, and well-funded startups that need engineers who can own the stack and scale it.
Are there remote senior level senior fullstack developer jobs?
Yes, remote and hybrid arrangements are common at the senior level. About 34% of senior level senior fullstack developer openings are remote or hybrid as of September 2026, reflecting how strongly technology employers have maintained flexible work options for experienced engineers who can operate independently across distributed teams.
What makes a senior fullstack developer role senior level?
Senior level roles go well beyond writing features. They require owning the full lifecycle of a system, making architectural trade-offs, setting technical standards for a team, and contributing to engineering strategy. Mentoring mid-level engineers and reviewing designs for correctness and scalability are standard expectations. The distinction from mid-level work is scope and accountability, not just technical complexity.
Which industries hire the most senior level senior fullstack developers?
Senior level senior fullstack developer roles concentrate in Technology & Software, Consulting & Professional Services, and Investment & Asset Management, based on current listings on Migrate Mate as of September 2026. These sectors drive demand because they rely on complex, high-availability platforms where senior engineers are needed to set the architectural foundation and lead the teams building on top of it.