Role Description We are looking for a software developer with the following qualifications: - 5+ years of professional software development experience. - Advanced English is required. - Successful completion of a four-year college degree is required. - Extensive experience with Kotlin and Java for backend development. - Strong background in object-oriented programming and software design principles. - Proven experience building scalable backend services and APIs. - Hands-on experience working with frontend frameworks such as React, Vue, or Angular. - Demonstrated experience using TypeScript (preferred) or JavaScript for frontend development. - Deep experience in designing and developing full-stack applications. - Practical experience integrating frontend and backend systems. - Solid understanding of RESTful APIs and microservices architecture. - Familiar with modern frontend development practices and responsive design. - Knowledgeable in performance optimization and scalable system design. - Ability to work through new and difficult issues and contribute to libraries as needed. - Ability to create and maintain continuous integration and delivery of applications. - Forensic attention to detail. - A positive mindset and a can-do attitude. - Experience working on Agile / Scrum teams. - Meaningful experience working on large, complex systems. - Ability to take extreme ownership over your work. - Ability to identify with the goals of FullStack's clients. - Ability to consistently work 40 hours per week. Qualifications - 5+ years of professional software development experience. - Advanced English is required. - Successful completion of a four-year college degree is required. - Extensive experience with Kotlin and Java for backend development. - Strong background in object-oriented programming and software design principles. - Proven experience building scalable backend services and APIs. - Hands-on experience working with frontend frameworks such as React, Vue, or Angular. - Demonstrated experience using TypeScript (preferred) or JavaScript for frontend development. - Deep experience in designing and developing full-stack applications. - Practical experience integrating frontend and backend systems. - Solid understanding of RESTful APIs and microservices architecture. - Familiar with modern frontend development practices and responsive design. - Knowledgeable in performance optimization and scalable system design. - Experience working on Agile / Scrum teams. - Meaningful experience working on large, complex systems. Requirements - Ability to work through new and difficult issues and contribute to libraries as needed. - Ability to create and maintain continuous integration and delivery of applications. - Forensic attention to detail. - A positive mindset and a can-do attitude. - Ability to take extreme ownership over your work. - Ability to identify with the goals of FullStack's clients. - Ability to consistently work 40 hours per week. Benefits - Competitive pay. - 100% remote work. - The ability to work with leading startups and Fortune 500 companies. - Continuing education opportunities. - Opportunity to grow and expand your career.

Role Description We are hiring BASE24-eps developers with hands-on experience in building interfaces. The ideal candidate has experience in developing and implementing Base24-eps interfaces including Mastercard interface, scheme updates, BIN changes, authorization enhancements, EMV updates, and compliance-driven system modifications. - Develop, enhance, and maintain BASE24-eps applications for new interface development including Mastercard interface. - Development involves building new interfaces for authorization, switching, routing, and settlement. - Implement Visa, Mastercard, Amex, or other card scheme mandates, and ensure compliance across system components. - Integrate, test, and support payment interfaces (ISO8583, host interfaces, third-party processors, gateways, fraud systems). - Examine scheme bulletins and translate requirements into technical changes within BASE24-eps modules. - Troubleshoot authorization issues, transaction declines, routing faults, and system-level processing errors. - Support end-to-end testing: certification testing, mandate validation, regression cycles, and cutover activities. - Coordinate with cross-functional teams: QA, infrastructure, production support, and client stakeholders. - Prepare technical documentation, release notes, and deployment procedures as needed. Qualifications - 6+ years of hands-on experience with BASE24-eps (AFT, OLF, ONL, TLF modules, device handlers, and related components). - Strong experience implementing card scheme mandates (Visa, Mastercard, Amex, JCB, Discover, etc.). - Solid understanding of payment message formats, including: - ISO 8583 - Proprietary scheme formats - Host Interface specifications - APIs - Proficiency in C++, Mainframe, Linux, MQ or XPNET. - Experience in real-time transaction systems and high-throughput payment platforms. - Knowledge of authorization flows, EMV processing, issuer/acquirer concepts, interchange processing, and settlement. - Strong analytics and debugging skill with ability to trace complex transaction paths. - Ability to work independently in distributed and remote teams. - Excellent communication skill for interacting with scheme partners and client stakeholders. Preferred Qualifications - Experience with mandate certification, scheme migrations, or large-scale mandate rollouts. - Knowledge of POS, ATM, eCommerce, or tokenization transaction flows. Benefits - Comprehensive wellness benefits including health checks, telemedicine, insurance with top-ups, elder care, partner coverage or new parent support via flexible work. - Opportunity to work on cutting-edge projects in tech and engineering with industry leaders. - Ability to create solutions to overcome societal and environmental challenges.

Role Description We are seeking a talented and motivated individual to join our dynamic team in a remote capacity. This position offers the opportunity to work on innovative projects and contribute to impactful software solutions. - Design, develop, and maintain high-quality software applications. - Collaborate with cross-functional teams to define, design, and ship new features. - Write clean, scalable, and efficient code while adhering to best practices. - Conduct code reviews and provide constructive feedback to team members. - Debug and resolve technical issues as they arise. Qualifications - Proven experience in full-stack development, with proficiency in JavaScript, HTML, and CSS. - Experience with frameworks such as React, Node.js, or Angular. - Strong understanding of database management and APIs. - Ability to work independently and manage multiple tasks effectively. - Excellent communication and teamwork skills. Requirements - Experience with cloud platforms like AWS or Azure. - Familiarity with DevOps practices and tools. - Knowledge of Agile methodologies. - Experience in security best practices in software development. Benefits - Salary: 140000 - 250000 USD Per annum

• Develop and maintain server-side applications using Node.js • Build responsive and dynamic front-end interfaces using Vue.js • Design and consume RESTful APIs and microservices • Collaborate with cross-functional teams including UI/UX designers, QA, and DevOps • Write clean, scalable, and well-documented code • Optimize applications for maximum speed and scalability • Implement security and data protection best practices • Debug, troubleshoot, and upgrade existing applications • Participate in code reviews and ensure coding standards • Work in Agile/Scrum environments and contribute to sprint planning