Senior Frontend Engineer

Develop and maintain scalable, high-performance frontend applications using React and Next.jsCollaborate with Product, Design, and Backend teams to deliver seamless user experiencesIntegrate APIs and backend services into the frontendParticipate in architecture discussions, sprint planning, and code reviewsEnsure responsive design, accessibility, and cross-browser compatibilityContribute to continuous improvement of engineering processes and product quality5+ years of professional software engineering experience with strong focus on frontend developmentSolid experience with React (Next.js is a plus)Strong proficiency in TypeScript and JavaScriptExperience integrating APIs into web applicationsFamiliarity with backend concepts and relational databases (Postgres)Understanding of responsive design, accessibility, and cross-browser compatibilityExcellent communication skills and collaborative mindsetEnglish level: AdvancedWILL BE A PLUSExperience with other frontend frameworks (Vue, Angular)Knowledge of Node.js or NestJSExperience with performance optimization and frontend build toolsERSONAL PROFILEStrong problem-solving skillsCollaborative and communicative team playerDetail-oriented with focus on quality and user experienceValues: Proactive, adaptable, innovative mindsetAre you ready to shape the future of financial technology with cutting-edge frontend solutions? Join Sigma Software as a Senior Frontend Engineer and work on mission‑critical systems that power global payment processing. This role offers the opportunity to collaborate with talented engineers, product managers, and designers to deliver exceptional user experiences.We are hiring for a senior-level position — Remote work mode, open to candidates worldwide. Employment type: Full-time. At Sigma Software, you’ll be part of a team that values innovation, scalability, and quality. Why join us? You’ll work on high-impact projects, influence architecture decisions, and contribute to a platform used by businesses worldwide. CUSTOMER Our customer is a leading SaaS provider in the FinTech industry, specializing in AI-native revenue platforms for finance and accounting teams. Their solutions cover subscription management, billing, and revenue operations for companies of all sizes. With a strong focus on compliance, scalability, and integration with multiple payment gateways, they help businesses streamline financial processes and accelerate growth. PROJECT The project involves enhancing and maintaining core payment processing systems, integrating with multiple payment gateways, and ensuring the stability, scalability, and compliance of financial transaction pipelines and APIs. You’ll work closely with cross-functional teams, contributing ideas and influencing architecture. Key Technologies: React, Next.js, TypeScript, JavaScript, APIs, Postgres, Node.js/NestJS (optional), Vue, AngularOriginally posted on Himalayas