Senior Full-Stack (React+Node.js) Engineer

N-iX is looking for Senior Full-Stack (React+Node.js) Engineer to join the team Over 1.5 million customers and more than a billion people in over 180 countries use Customer solutions to accelerate the process of doing business and simplify people’s lives. With intelligent agreement management, Client unleashes business-critical data that is trapped inside of documents. Until now, these were disconnected from business systems of record, costing businesses time, money, and opportunity. Using our product companies can create, commit, and manage agreements. Team Overview Our unified, widget‐based front-end platform that powers Intelligent Agreement Management (IAM) experiences across creation, sending, signing, and management—bringing consistent, modern UX to our most visible product surfaces. It standardizes how teams build UI via a shared shell and micro‐frontend architecture, with robust utilities and CI/CD that publish versioned widgets to our global CDN for reliable, high‐scale delivery. Engineers on our Team work at a meaningful scale—building experiences used by 1.7 million organizations—and integrate agreement‐centric AI to turn contracts into intelligent workflows. Joining our Team means shaping platform patterns, performance, and observability that accelerate how online signature works across the company. Our product also enable federal‐grade workloads without sacrificing developer velocity. Engineers here tackle secure‐by‐default patterns for identity, data handling, and observability—building on zero‐trust principles, strict network segmentation. You’ll design for high availability in constrained environments, optimize performance with privacy, and leverage automated compliance guardrails in CI/CD to ship with confidence. If you enjoy solving hard platform problems—telemetry without PII, resilient rollouts, deterministic builds, and least‐privilege runtime sandboxes. Responsibilities: Build and enhance a widget-based micro-frontend architecture, ensuring consistency, reusability, and high performance across multiple product surfaces. Develop shared platform services, frameworks, and tooling that enable engineering teams to efficiently deliver modern user experiences at scale. Drive platform reliability, observability, and performance by implementing monitoring, telemetry, automated testing, and resilient deployment strategies. Collaborate closely with product, design, security, and engineering teams to establish best practices, architectural standards, and developer experience improvements. Implement secure-by-default solutions following zero-trust principles, least-privilege access models, network segmentation, and compliance requirements for enterprise and regulated environments. Contribute to CI/CD pipelines, automated compliance controls, and global release processes to ensure reliable, high-quality delivery of platform components and micro-frontends. Requirements: 5+ years of development experience Proficient with TypeScript and the React framework Proficient in building reusable front-end components Proficient with front-end testing libraries Proficient with Express and NodeJS, Next JS Experience delivering a SaaS product Be open minded, forward thinking, and passionate about great software Experience with the entire software development lifecycle, including version control, build process, testing, and code release Experience with data modeling or schema languages, such as XML Schema or JSON Schema Agile and Test-driven development methodologies Availability to work within the following schedule: 14:00 – 22:00 CET Experience with ADO (Bonus) Experience with micro-frontend frameworks Experience building/consuming RESTful or gRPC web-services Strong communication skills, particularly in an asynchronous environme English level - Upper-Intermediate + We offer*: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits *not applicable for freelancers