Senior C++ Developer

Responsibilities

• Develop, maintain, and optimize Microsoft Office COM Add-Ins on Windows using C++ and JavaScript (NodeJS).
• Analyze performance bottlenecks in large datasets, including 50k+ formulas and real-time data streams, and implement optimization strategies.
• Apply best practices and innovative solutions to improve add-in scalability, speed, and usability.
• Collaborate on the design and implementation of new COM Add-In features, ensuring thorough testing and quality assurance.
• Conduct performance analysis, profiling, and debugging; propose solutions that improve stability and speed.
• Integrate real-time data efficiently and handle high-frequency updates.
• Communicate technical solutions to internal stakeholders and external clients.
• Participate in technical discussions, gather requirements, and align development with business goals.
• Work actively in a distributed team using remote collaboration tools.

Requirements

• 5+ years of C++ programming experience, particularly developing and maintaining COM Add-Ins.
• JavaScript experience, particularly client-side scripting and improving user interactivity in Excel.
• Understanding of Microsoft Office APIs and COM Add-In architecture, especially for Excel.
• Experience handling large datasets, formula-heavy spreadsheets, and/or real-time data processing.
• Ability to optimize performance, scalability, and responsiveness for substantial workloads.
• Experience with debugging, profiling tools, and performance tuning; Excel-related performance analysis is highly desirable.
• Knowledge of asynchronous programming and multithreading for real-time data updates.
• Strong analytical and problem-solving skills and a proactive approach to resolving issues.
• Strong written and verbal communication skills, including explaining complex technical concepts to technical and non-technical stakeholders.
• Experience working effectively in distributed teams using collaboration tools.
• English proficiency at 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 functionality, including VBA macros.
• Knowledge of integrating real-time data streams from APIs or external trading systems into Microsoft Office Add-Ins.
• Git experience and experience implementing CI/CD deployment pipelines.
• Familiarity with Office Add-In web technologies, including Office.js.
• Knowledge of usability, testing, and debugging best practices for distributed applications.

We offer

• Innovative AI, cloud, and digital platform modernization work in a supportive, agile, startup-like culture.
• Hybrid work and the opportunity to work remotely within Poland.
• Opportunity to work abroad for up to 60 days annually.
• Business-driven relocation opportunities.
• Career development programs, thought leadership, mentoring, soft-skills and well-being programs.
• Certification opportunities in Anthropic, Gemini, GCP, Azure, and AWS.
• English classes.
• Stable pay.
• Employee Stock Purchase Plan participation with a 15% discount.
• Benefits package including health insurance, multisport, and shopping vouchers.
• Referral bonuses up to $2,000.
• Offices with entertainment and relaxation zones, table tennis, football, free snacks, coffee, and more.
• Corporate, social, and well-being events.

Please note

• Listed benefits are available to employees only.
• Contractors are welcome; B2B cooperation terms are agreed individually.
• Only selected candidates will be contacted.