Staff Software Developer

JLL empowers you to shape a brighter way.

Our people at JLL are shaping the future of real estate for a better world by combining world class services, advisory and technology for our clients. We are committed to hiring the best, most talented people and empowering them to thrive, grow meaningful careers and to find a place where they belong. Whether you’ve got deep experience in commercial real estate, skilled trades or technology, or you’re looking to apply your relevant experience to a new industry, join our team as we help shape a brighter way forward.

Staff Software Developer – JLL

As a Staff Software Developer at JLL, you will lead the design and implementation of complete features spanning React frontend, C# backend services, database layer, and deployment pipeline. This senior technical role requires you to discover problems, determine their criticality, and drive your own projects to successful conclusion while mentoring junior engineers. You'll design and build scalable geospatial solutions leveraging the ArcGIS stack, set up end-to-end Dev Sec Ops  processes, and take leadership roles in large projects.

Working closely with Product Managers and business stakeholders in fast iteration cycles, you'll leverage AI coding assistants and enterprise software agents to rapidly develop production-quality code while maintaining the highest quality standards.

• Lead solution design and independently create solutions for ill-defined or complex problems that cross domains, considering interactions with other systems and future maintenance
• Design and build scalable geospatial solutions leveraging the ArcGIS stack to surface enterprise data, optimizing spatial data workflows and query performance
• Set up end-to-end solution structure, Dev Sec Ops  tooling and processes using Octopus Deploy and cloud technologies while taking leadership roles in large projects
• Leverage AI coding assistants and enterprise software agents to rapidly develop, test, and iterate on production-quality code with strong ability to review, validate, and debug AI-generated outputs
• Own quality assurance through comprehensive testing approaches including unit testing, system integration testing, and user acceptance testing, developing robust tests to cover all relevant cases
• Triage complicated failures and drive to resolution independently, helping others with their troubleshooting and root cause analysis
• Mentor junior engineers on proper standards and techniques to improve their accuracy and efficiency while providing ongoing support to applications used within the organization

• 8+ years of professional software engineering experience
• Hands-on experience with modern LLM APIs across multiple providers, including prompt engineering, tool use/function calling, structured outputs, and context engineering
• Strong ability to review, validate, and debug AI-generated code with strong engineering judgment to know when to trust AI output and when to intervene
• ArcGIS JS development and integration experience
• Solid understanding of backend systems, microservice architectures, and distributed systems in Python, Node.js, Java, Go, or C#
• Experience designing and maintaining RESTful or gRPC APIs
• Solid experience with a major cloud platform (AWS, Azure, or GCP)
• Experience with relational databases (PostgreSQL, MySQL) and No
  
  SQL databases (MongoDB, DynamoDB)
• Working knowledge of CI/CD, infrastructure-as-code, and containerization (Terraform, Docker, Kubernetes)

• Experience building or deploying LLM-enabled systems, AI agents, or agent orchestration frameworks
• Experience designing evaluation and testing frameworks for AI/agent-generated outputs
• Familiarity with enterprise AI/agent platforms and tool ecosystems
• Front-end experience with React, Angular, or Vue.js for internal tools and dashboards
• Experience in Commercial Real Estate, Research, Financial Services, or other data-intensive domains
• Experience modernizing legacy systems or migrating platforms to cloud-native architectures

–  CAD per year

This range represents the…