• Lead full-stack architecture and implementation for a cloud-hosted federal platform • Collaborate with cross-functional teams — UX designers, product managers, DevSecOps engineers to deliver production-quality code in a SAFe Agile environment • Drive engineering excellence through automated testing, code reviews, and mentorship that meets stringent federal quality metrics (zero Sev 1/2 defects, <5 Sev 3 per component) • Design and implement full-stack features for complex federal operational workflows • Build and maintain frontend interfaces that deliver on UX designs with high fidelity • Develop backend services, integrations, and data pipelines supporting legacy system migration and retirement • Mentor team members, conduct code reviews, and drive engineering best practices

Role Description Working with high-profile clients around the world, you will deliver solutions that solve complex problems with evolving data and advanced algorithms. You will use modern technologies and cloud services AWS and Azure to deliver cutting edge applications involved in 24/7/365 active operations. To this end, you must have high ownership and be committed to solving production issues whenever they arise. Arcadis has an extremely collaborative environment where teams work together across multiple disciplines to achieve the best outcomes possible. Everyone is committed to delivering highly stable and quality driven software products that impact people's lives. - Feature driven development in a remote collaborative team environment. - Design, develop, unit test, and maintain secure applications and services across a variety of private and public sector clients around the world. - Interface with external data sources using a large variety of protocols. - Perform peer-reviews of solution designs, architectures, and related code. - Leverage cloud services provided by Azure or AWS to host and deliver all services. - Implement ITS device-level protocols to support integration with the inSIGHT Advanced Transportation Management System (ATMS). - Develop new microservices to meet new functional needs of the system, handling design and software architecture roles. Qualifications - Minimum 15 years software development experience. - Practical experience with low-level protocol implementations for devices and/or IoT. - Experience with protocols for ITS field devices including NTCIP, TMDD, Modbus, and SNMP. - Practical knowledge and experience with C++, C, or other low-level languages. - Strong understanding of the full software development life cycle, including best practices. - Understanding of distributed systems and service-oriented architectures. - Experience delivering and maintaining customer facing production systems. - Experience with SQL database queries, optimization, and design. - Experience with SCADA systems. - Bachelor's Degree in Computer Science or related field. Requirements - Provide senior-level software development experience, with emphasis on back-end systems design and development. - Implement ITS device-level protocols to allow for new device types or new functionality to be incorporated into the inSIGHT ATMS software. - Create new software microservices as needed to provide new functionality into the core of the system. - Design services to communicate with field devices across various network topologies. - Devise the appropriate software design and architecture for new back-end services providing core functionality to the inSIGHT ATMS system. - Define automated unit tests to ensure quality and correctness of service logic. - Optimize the data storage and retrieval to the inSIGHT ATMS database. - Work with ATMS operations staff as well as client technical staff as needed to investigate protocol-related issues with devices and to assist with integration and acceptance testing of new device or protocol implementations. Technical Leadership - Provide technical expertise as needed to other software developers on the team. - Perform code reviews and provide guidance on pull requests for device services. - Review and advise on effort estimates and feature requests from clients with respect to new or expanded device integration. - Mentor staff to grow the core competency of the team for device service development and protocol implementation capabilities. Benefits - Medical, dental, and vision insurance. - EAP (Employee Assistance Program). - 401K. - STD (Short-Term Disability) and LTD (Long-Term Disability). - AD&D (Accidental Death & Dismemberment) insurance. - Life insurance. - Paid parental leave. - Reward & recognition program. - Optional benefits including wellbeing benefits, adoption assistance, and tuition reimbursement. - Nine paid holidays and 15 days PTO that accrue per year. - The salary range for this position is $xxx,xxx - $xxx,xxx. Actual salaries will vary and are based on several factors, such as experience, education, budget, internal equity, project, and location.

• Designing and developing cutting-edge web applications and API experiences • Working with modern React and Node.js to create secure and efficient solutions • Leveraging AWS services to build robust cloud-based systems • Implementing end-to-end testing with Cypress • Participating in code reviews and mentoring junior engineers

• Design, develop, and support complex enterprise integrations using Boomi (iPaaS) within hybrid on‑premise and Microsoft Azure cloud environments. • Develop and maintain data integration workflows leveraging Microsoft SQL Server and Transact‑SQL, including stored procedures, data transformations, and performance optimization for high‑volume transactional systems. • Build, configure, and support Microsoft Azure integration services, including Azure Logic Apps, Integration Accounts, and API-driven workflows for B2B and application integrations. • Design and implement EDI integrations, including mapping, trading partner onboarding, document validation, and secure data exchange. • Develop and enhance integration components using C# / .NET technologies, including custom services, APIs, and middleware components supporting integration flows. • Collaborate with business analysts and stakeholders to translate functional requirements into scalable integration and data solutions. • Perform advanced data analysis and troubleshooting across SQL Server, Boomi, and Azure platforms, ensuring data accuracy, integrity, and system performance. • Optimize integration performance through efficient SQL query design, indexing strategies, and data flow optimization. • Participate in solution architecture design sessions, ensuring alignment with enterprise integration and cloud strategies. • Conduct code reviews and enforce standards for integration design, SQL development, and application code quality. • Develop and maintain technical documentation, including integration architecture diagrams, data flow mapping, and deployment procedures. • Provide Level 2 support and participate in incident resolution for integration, database, and EDI-related issues.