Senior C++ Developer

We are seeking a Senior C++ Developer to join our global team working on client connectivity trading systems and FIX-based platforms. You will contribute to a multi-year initiative to modernize existing connectivity platforms, collaborating with analysts, developers, and business stakeholders across the globe. This role involves solving challenging architectural problems, enhancing system performance, delivering client-driven functionality, and ensuring compliance with market regulations, while helping the team embrace a DevOps ethos with continuous integration and continuous delivery. This role offers a hybrid model, with 3 days per week working from the client's office in Kraków or Wrocław, Poland. Responsibilities Spend 80-90% of your time performing direct development-related activities such as coding, design, configuration management, releases, and post-implementation supportContribute to architectural decisions as part of a global team solving complex technical problemsModernize existing client connectivity trading platforms, including A4, A4FIX, FIXAJ, and BlueDirectDeliver technical projects to enhance system performance and throughputWork on client-driven projects to add new functionality and ensure compliance with market regulationsDrive the team's transformation toward a DevOps ecosystem with CI/CD practicesCollaborate closely with analysts, developers, and business stakeholders across multiple regionsProvide post-implementation support and ensure system reliability Requirements 5+ years of hands-on experience with C++, including multi-threading, STL, and templatesProficiency in data structures, casting, pointers, socket programming, and algorithmsDevelopment experience in a financial environment working on order management systems, FIX protocol, and order-state handlingBackground in programming within Linux/Unix environmentsExpertise in building high-performance, high-availability, low-latency, transaction-oriented distributed systems with high throughput and capacityKnowledge of the equity trading environment, ideally across a multi-regional capacityExcellent communication skills and the capability to explain highly complex functional and non-functional topics to IT and business stakeholdersEnglish proficiency at an Upper-Intermediate level (B2) or higher Nice to have Prior experience working on a client connectivity systemFamiliarity with Java, including Core Java, Collections, and ReflectionCapability to handle Level 3 (DEV) support in a pressurized production environment We offer We gather like-minded people:Top tech minds driving innovation in AI, cloud and digital platform modernizationSupportive team and agile, startup-like cultureHybrid by design mode and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities:Career development programsThought leadership, mentoring, soft skills and well-being programsCertification (Anthropic, Gemini, GCP, Azure, AWS)English classesWe cover it all:Stable payParticipation in the Employee Stock Purchase Plan with a 15% discountBenefits package (health insurance, multisport, shopping vouchers)Referral bonuses up to $2,000Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and moreCorporate, social and well-being eventsPlease, note:Benefits listed above are available to employees onlyWe are open for working with Contractors. Terms of B2B cooperation agreements are agreed individuallyWe will reach out to selected candidates exclusively EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.