About Us: Datacor is the leading provider of software solutions, including ERP, CRM, Asset Tracking, Simulation and Formulation, to the process manufacturing space. We are on a mission to better equip the industry with software solutions and move it forward by building thoughtful, intuitive products that solve our customers’ most difficult problems. We are passionate about serving our customers and helping them use data as a competitive advantage. Our customers make products that extend and sustain lives by sanitizing, fertilizing, beautifying, cleaning, and recycling the world we live in. We at Datacor help our customers make those products you use every day more safely, cost effectively and more efficiently through our technology platforms and applications. GoldSim, a Datacor company, is the world leader in dynamic simulation software for water resources, environmental systems, and complex engineering problems. Our customers use GoldSim to model some of the most challenging questions in engineering and science from managing critical water supplies to assessing the long-term safety of environmental systems.  We are looking for a Lead Software Engineer who brings deep technical expertise, strong initiative, and a passion for building software that lasts. In this role you will help shape the next generation of our simulation platform and push the boundaries of what engineering simulation can do.  The Role  As a Lead Software Engineer, you will provide technical leadership across the core subsystems of our simulation platform. You will guide architectural decisions, champion modern engineering practices, lead the delivery of complex features, and safeguard the long-term health of the codebase. You will operate with significant autonomy and act as a trusted expert in your domain.  What You'll Do  Architecture & Modernization  * Shape the architecture of core platform subsystems, including UI frameworks, calculation engines, file systems, APIs, and licensing.  * Evaluate design options, weigh trade-offs, and ensure long-term performance, scalability, security, and maintainability.  * Drive consistency in design patterns and engineering standards across the codebase.  Execution & Delivery  * Own the technical delivery of features from initial design through release.  * Translate business and product requirements into technical specifications.  * Lead investigations into complex bugs, performance issues, and cross-module interactions.  Quality & Support  * Conduct code reviews and coach engineers on writing maintainable, scalable code.  * Partner with QA on test strategy and provide technical analysis during triage.  * Serve as an escalation point for the Support team on advanced technical issues.  Collaboration & Knowledge Sharing  * Contribute technical input during roadmap planning and surface technical-debt concerns.  * Collaborate on QA automation efforts and CI/CD pipeline improvements.  * Document designs and share knowledge across the team.  * Partner with the founding engineer to document and scale institutional knowledge to enable future team growth  What You'll Bring  Required  * Bachelor's degree in Computer Science or a related field, or equivalent practical experience.  * 5+ years of experience in desktop software development.  * Proficiency in modern C++ (C++14 or later).  * Experience developing Windows applications with Visual Studio (2019 or later).  * Experience working in large, legacy codebases with established patterns.  * Strong debugging and critical-thinking skills for complex, multi-module systems.  * Ability to communicate technical concepts clearly to Product Managers, QA, Support, and engineering peers.  * Experience with AI-assitedassisted development tools (Claude Code, Cursor, Copilot)  Preferred  * Familiarity with Microsoft Foundation Classes (MFC) for Windows UI development.  * Experience with large, multi-component build systems and automation.  * Experience with modern licensing platforms (e.g., FlexNet).  * Experience with modern numerical libraries.  * Understanding of Windows system administration and desktop deployment.  * Experience porting C/C++ code to modern C++ and 64-bit and other major modernization projects.  * Experience with object serialization and structured data formats (e.g., XML, JSON).  * Understanding of COM, including interfaces, IDL, COM DLLs, and registration.  * Experience with relational databases (e.g., ODBC).  * Interest in applying ML to simulation  Why GoldSim  Join a team where your work directly shapes software that engineers and scientists rely on around the world. You'll take on meaningful technical challenges, enjoy real autonomy, and help define the future of a product with a global reputation for excellence. We have offices across the US where you have the opportunity to come in as you would like including one in Seattle.  EOE Statement: Datacor is an Equal Opportunity Employer and does not discriminate on the basis or race, color, religion, sex, national origin, age, disability, veteran status, or any other protected characteristic.  Use of AI During Interviews:  At Datacor, we value thoughtful problem-solving and authentic perspectives. To ensure a fair and consistent evaluation process, we ask that candidates do not use generative AI tools or outside assistance during live interviews unless explicitly stated otherwise. We're interested in hearing your experience, your approach, and how you think through challenges.