Senior C++ Developer

We are seeking a Senior C++ Developer to design, optimize, and maintain high-performance Microsoft Office COM Add-Ins, with a focus on scalability, real-time data processing, and seamless user experience within Excel.

Responsibilities

• Develop, maintain, and optimize Microsoft Office COM Add-Ins on Windows using C++ and JavaScript (NodeJS)
• Analyze performance bottlenecks in handling large datasets, such as 50k+ formulas or real-time data streams, and implement optimization strategies
• Apply best practices and innovative solutions to improve the scalability, speed, and usability of the add-in
• Collaborate with the team to design and implement new features for the COM Add-In application, and ensure thorough testing and quality assurance
• Conduct detailed performance analysis, including profiling and debugging, and propose solutions to enhance stability and speed
• Work on real-time data integration and ensure efficient handling of high-frequency updates
• Communicate technical solutions effectively to internal stakeholders and external clients
• Engage in technical discussions, gather requirements, and ensure alignment between development and business goals
• Participate actively in a distributed team environment, and leverage remote collaboration tools to stay connected and productive

Requirements

• 5+ years of experience with C++ programming, particularly for developing and maintaining COM Add-Ins
• Experience with JavaScript, particularly for client-side scripting and enhancing user interactivity within Excel
• Understanding of Microsoft Office APIs and the architecture for COM Add-In development, especially in Excel
• Demonstrated experience handling large datasets, formula-heavy spreadsheets, and/or real-time data processing
• Proven ability to optimize performance, improve scalability, and enhance responsiveness in applications dealing with substantial workloads
• Experience with debugging, profiling tools, and performance tuning, with specific experience analyzing Excel-related performance highly desirable
• Knowledge of asynchronous programming and multi-threading techniques to handle real-time data updates
• Excellent analytical and problem-solving skills combined with a proactive approach to identifying and solving issues
• Strong verbal and written communication skills with the ability to explain complex technical concepts to both technical and non-technical stakeholders
• Experience working effectively in distributed teams using collaboration tools
• Proficiency in English at a B2+ level

Nice to have

• Background in financial services, fintech, or a similar domain involving large-scale data and formula-heavy computations
• Familiarity with advanced Excel functionalities, such as VBA macros
• Knowledge of integrating real-time data streams, such as from APIs or external trading systems, into Microsoft Office Add-Ins
• Proficiency with version control systems such as Git and experience implementing CI/CD pipelines for deployment
• Familiarity with Web technologies used in Office Add-Ins, including Office.js
• Knowledge of best practices for usability, testing, and debugging in distributed applications

Benefits

We gather like-minded people:

• Top tech minds driving innovation in AI, cloud and digital platform modernization
• Supportive team and agile, startup-like culture
• Hybrid by design mode and opportunity to work remotely within Poland
• Chance to work abroad for up to 60 days annually
• Business-driven relocation opportunities

We provide growth opportunities:

• Career development programs
• Thought leadership, mentoring, soft skills and well-being programs
• Certification (Anthropic, Gemini, GCP, Azure, AWS)
• English classes

We cover it all:

• Stable pay
• Participation in the Employee Stock Purchase Plan with a 15% discount
• Benefits package (health insurance, multisport, shopping vouchers)
• Referral bonuses up to $2,000
• Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
• Corporate, social and well-being events

Please, note:

• Benefits listed above are available to employees only
• We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
• We will reach out to selected candidates exclusively