Senior JavaScript/Node.js Developer, FinTech

Sigma Software Group

Node.js expert developing large-scale software solutions for a rapidly growing FinTech company. Collaborating in a team and ensuring high quality throughout development phases.

Posted 5/30/2026full-timeRemote • 🇵🇱 PolandSeniorWebsite

Tech Stack

Tools & technologies

AWSGraphQLJavaScriptMicroservicesNode.jsReactTypeScript

About the role

Key responsibilities & impact

Design and implement large-scale software solutions and components using multiple technologies, with a primary focus on Node.js and ReactJS
Maintain a consistently high level of quality throughout all stages of the development
Communicate effectively to collaborate closely with the team and gain full context for complex tasks
Follow the best engineering practices, as well as company and client guidelines
Play supervisory, advisory, and coaching roles for less-experienced engineers on the team
Promote clean code, as well as design patterns and principles

Requirements

What you’ll need

Over 5 years of experience in Back-end software development
At least 3 years of experience with TypeScript
Over 4 years of experience working with Node.js
Experience with AI Agentic systems and MCP (Model Context Protocol) integrations
Strong experience in designing distributed and secure systems
Good Front-end development skills
Good understanding of microservices architectures
Experience in designing, building, and maintaining APIs
Experience in building and consuming REST and/or GraphQL APIs
Familiarity with DevOps practices
Strong experience working with AWS
Good knowledge of testing best practices
At least an Upper-Intermediate level of English.

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account Sigma Software Group Website LinkedIn All Job Openings 1001 - 5000 employees Founded 2002 🎮 Gaming 📡 Telecommunications Software Development
Gaming
Telecommunications Sigma Software Group is a multinational company, established in 2002, that specializes in providing high-quality software development, graphic design, testing, and support services. The company focuses on delivering solutions across various industries such as automotive, telecommunications, aviation, advertising, gaming, banking, real estate, and healthcare. Sigma Software values professional growth, offers remote work opportunities worldwide, and caters to world-renowned clients like AstraZeneca, Scania, and SAS. The company emphasizes a culture of continuous education, mentorship, and flexible work environments, making it a preferred workplace for IT specialists aiming to work on complex solutions utilizing cutting-edge technologies. Sigma Software is committed to innovative solutions and engineering the future while also contributing to social causes such as charitable work in Ukraine. Senior JavaScript/Node.js Developer, FinTech 🔥 34 minutes ago 🇵🇱 Poland – Remote ⏰ Full Time 🟠 Senior 🔙 Backend Engineer AWS GraphQL JavaScript Microservices Node.js React TypeScript Apply Now Find Hiring Managers Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
Design and implement large-scale software solutions and components using multiple technologies, with a primary focus on Node.js and ReactJS
Maintain a consistently high level of quality throughout all stages of the development
Communicate effectively to collaborate closely with the team and gain full context for complex tasks
Follow the best engineering practices, as well as company and client guidelines
Play supervisory, advisory, and coaching roles for less-experienced engineers on the team
Promote clean code, as well as design patterns and principles 🎯 Requirements
Over 5 years of experience in Back-end software development
At least 3 years of experience with TypeScript
Over 4 years of experience working with Node.js
Experience with AI Agentic systems and MCP (Model Context Protocol) integrations
Strong experience in designing distributed and secure systems
Good Front-end development skills
Good understanding of microservices architectures
Experience in designing, building, and maintaining APIs
Experience in building and consuming REST and/or GraphQL APIs
Familiarity with DevOps practices
Strong experience working with AWS
Good knowledge of testing best practices
At least an Upper-Intermediate level of English. Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score Similar Jobs Senior Backend Engineer, TypeScript 🔥 23 minutes ago Software Mind 1001 - 5000 🤖 Artificial Intelligence ☁️ SaaS 📡 Telecommunications Website LinkedIn All Job Openings Senior Backend Engineer developing high-load backend services using TypeScript and Node.js for international projects. Collaborating in cross-functional teams to ensure robust data architecture and governance. 🇵🇱 Poland – Remote 💰 Private Equity Round on 2020-12 ⏰ Full Time 🟠 Senior 🔙 Backend Engineer Distributed Systems GRPC JavaScript Kafka Microservices Node.js Postgres TypeScript Senior Full-stack Software Engineer, Nest.js/Node.js, React 🔥 23 minutes ago Software Mind 1001 - 5000 🤖 Artificial Intelligence ☁️ SaaS 📡 Telecommunications Website LinkedIn All Job Openings Senior Full-stack Software Engineer developing JavaScript and React solutions for global clients at Software Mind Poland. Collaborating with Scrum teams on greenfield projects with a focus on performance and scalability. 🇵🇱 Poland – Remote 💰 Private Equity Round on 2020-12 ⏰ Full Time 🟠 Senior 🔙 Backend Engineer JavaScript Jest Microservices Postgres React Redux TypeScript Java Developer 🔥 3 hours ago Kainos 1001 - 5000 Website LinkedIn All Job Openings Java Developer responsible for developing high quality solutions for Workday customers. Collaborating with cross-functional teams and contributing to innovative AI projects. 🇵🇱 Poland – Remote 💰 Venture Round on 1986-04 ⏰ Full Time 🟡 Mid-level 🟠 Senior 🔙 Backend Engineer Angular AWS Azure Cloud Hibernate Java NoSQL Spring SQL TypeScript Software Engineer III, Backend - Orchestration 🔥 13 hours ago Primer 51 - 200 💳 Fintech Website LinkedIn All Job Openings Backend Engineer designing and delivering backend services for payment orchestration systems. Focusing on reliability, performance, and collaborating with a high-calibre team. 🇵🇱 Poland – Remote ⏰ Full Time 🟡 Mid-level 🟠 Senior 🔙 Backend Engineer Distributed Systems Senior Software Engineer, Java/Python 🔥 17 hours ago Emergn 501 - 1000 Website LinkedIn All Job Openings Senior Software Engineer at Emergn responsible for designing and deploying Javascript applications. Working within a global team to solve real business challenges with modern technologies. 🇵🇱 Poland – Remote ⏰ Full Time 🟠 Senior 🔙 Backend Engineer AWS Django Docker Java JavaScript Microservices Postgres Python Spring Boot SpringBoot Terraform View More Backend Engineer Jobs 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

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Hard Skills & Tools

Node.jsReactJSTypeScriptAI Agentic systemsModel Context Protocoldistributed systemssecure systemsmicroservices architecturesAPIsREST

Soft Skills

communicationcollaborationsupervisoryadvisorycoachingclean code promotion