CrawlJobs Logo

Senior Node.js Developer

inoxoft.com Logo

Inoxoft

Location Icon

Location:
Ukraine

Category Icon
Category:
IT - Software Development

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided
Save Job
Save Icon
Apply Position

Job Description:

We are looking for a Senior Node.js Developer to join our team and play a key role in building and scaling high-performance backend services. You will be responsible for designing and developing robust, scalable APIs and distributed systems, ensuring seamless data flow and system efficiency.

Job Responsibility:

  • Design and implement scalable backend services and APIs using Node.js
  • Optimize data storage and retrieval using MongoDB
  • Deploy, manage, and optimize services on AWS (ECS, Lambda, SQS, API Gateway)
  • Lead architectural decisions for high-scale, complex systems, ensuring they align with both immediate needs and future scalability
  • Work closely with frontend engineers, DevOps, and product teams to deliver well-engineered solutions
  • Write clean, optimized, well-documented code and contribute to code reviews
  • Guide and mentor junior developers, helping them grow their technical expertise
  • Continuously improve system efficiency, scalability, and security

Requirements:

  • 5+ years of backend development experience using Node.js and Express.js
  • Strong proficiency in Node.js, MongoDB and different AWS services (ECS, Lambda, SQS, API Gateway)
  • Proven ability to design, maintain, and optimize complex systems
  • Strong skills in writing optimized, efficient, and high-performance code
  • Experience working with distributed systems and microservices architecture
  • Ability to navigate complex codebases, identify improvements, and iteratively enhance system performance
  • Strong problem-solving skills and the ability to translate business requirements into scalable, maintainable solutions
  • Experience with event-driven architectures and messaging systems
What we offer:
  • Flexible working hours
  • 25 paid days off and 10 sick/medical leaves
  • Additional paid days off for personal events like marriage and childbirth
  • Maternity/Paternity leaves
  • Skills Evaluations and promotions are based on Corporate Matrix
  • Discount program
  • Self-development budget per year
  • Referral bonuses
  • Corporate events and gifts
  • Learning events and mentorship opportunities
  • Speaking Clubs
  • PE accounting and support

Additional Information:

Job Posted:
December 09, 2025

Icon
View All Jobs In This Company
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Senior Node.js Developer

Senior Node.js Backend Developer

At A-SAFE DIGITAL, we are a dynamic and innovative tech company driving the glob...
Location
Location
Spain , Málaga
Salary
Salary:
Not provided
asafe.com Logo
A-SAFE GROUP
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum 5 years of professional experience as a Node.js Backend Developer with a proven track record
  • Extensive experience with TypeScript
  • Strong command of Node.js and asynchronous programming
  • Experience with popular Node.js frameworks like Express
  • Proficiency in designing and optimizing database schemas (e.g., MongoDB, MySQL, PostgreSQL)
  • Knowledge of container technologies (Docker) and orchestration tools (Kubernetes)
  • Familiarity with microservices architecture and serverless computing
  • Solid understanding of CI/CD pipelines and version control systems
  • Excellent problem-solving and communication skills
  • Ability to thrive in a collaborative and fast-paced work environment
Job Responsibility
Job Responsibility
  • Design, develop, and maintain efficient and scalable backend services using Node.js and TypeScript
  • Collaborate with front-end developers, product managers, and other stakeholders to deliver integrated solutions
  • Implement and maintain database structures and optimize queries for better performance
  • Work with modern frameworks and tools, ensuring code quality and adherence to best practices
  • Conduct code reviews to ensure high standards and mentor junior team members
  • Implement and maintain RESTful APIs and other communication protocols
  • Stay up to date with emerging industry trends and technologies to propose innovative solutions
What we offer
What we offer
  • Competitive salary
  • Hybrid work model: 2 days in-office / 3 days remote
  • Flexible hours with early Friday finishes
  • Real opportunities for growth and professional development
  • Office perks: swimming pool, ping-pong table, coffee and tea
  • Fulltime
Read More
Arrow Right
New

Senior Full Stack (Node.js + React.js) Developer

Location
Location
Salary
Salary:
Not provided
peiko.space Logo
Peiko
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Successful experience of Backend & Frontend development
  • Commercial work experience of 4+ years or more on projects with React.js and Node.js
  • Deep knowledge of Redux
  • Excellent knowledge of JavaScript
  • Knowledge of CI/CD
  • Knowledge of MongoDB
  • Experience working with AWS services
  • Upper-Intermediate English (a high level of proficiency is required, as there will be communication with the team and the client)
Job Responsibility
Job Responsibility
  • Work on new features, develop both backend and frontend parts using Node.js, React.js, and other technologies as needed
  • Writing high-quality code, supporting existing functions
  • Collaboration with the engineering team to develop and launch new features
  • Suggesting product quality improvement
  • Communication with the client and the team (in English)
What we offer
What we offer
  • Full remote work or at your choice
  • Work in a strong team
  • Transparent processes
  • Interesting and difficult tasks and projects
  • Competitive salary
  • The possibility of training and development within the company: payment of specialized courses, participation in conferences
  • We have corporate English language training + we are an international company, so you still have the opportunity to practice English at work
  • Social package (paid vacation and sick leave)
  • Merch and welcome box await you, we give employees gifts, equipment, Apple Watch, MacBook and more
  • At Peiko, you have confidence and stability, support, respect, trust, teamwork, care for each employee
Read More
Arrow Right
New

Senior Full Stack Developer (Node.js/Vue.js)

We are an IT company, JATAPP, creating products that are used by millions of use...
Location
Location
Worldwide
Salary
Salary:
Not provided
jatapp.com Logo
JatApp
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Deep knowledge of Vue.js 3 (Composition API): reactivity, state management (Pinia/Vuex), routing, SSR/Nuxt
  • Performance optimization skills (lazy loading, hydration, code splitting)
  • Experience with component architecture, working with design systems and Storybook
  • Confident knowledge of HTML5, CSS3/SASS, responsive design
  • Experience with TypeScript
  • Deep knowledge of Node.js (Express or Nest.js) - REST API / GraphQL development
  • Working with PostgreSQL/MySQL (ORM,Injections, Full text search, CAP)
  • Experience with AWS (S3, DynamoDB, Lambda, EC2, CDN)
  • Experience implementing authorization and authentication (JWT, OAuth)
  • Unit/e2e testing experience
Job Responsibility
Job Responsibility
  • Developing and maintaining web products as well as funnels with a focus on speed, conversion, and stable operation of payment systems (Paddle, Stripe, CheckoutChamp, etc.)
  • Building a flexible technical infrastructure
  • Developing integration with external services — payment, analytics, marketing, and content platforms
  • Using AI both in the product (content, personalization, image processing) and in development — to automate, test, and accelerate delivery
  • Optimizing performance, UX, and technical stability of web solutions
  • Collaborating with the product and analytics team to build fast and measurable experiments
What we offer
What we offer
  • Mental and Physical Health: health care is a must, so at JATAPP we will cover health insurance for you
  • Benefits Cafeteria: choose what you like most — sports, food delivery, home office supplies — and we will cover your expenses under available budget
  • Knowledge sharing: such events are our way to grow together. We gather to discuss new trends, share our own insights, and elevate one another
  • Remote-First Culture: it’s up to you whether to work remotely or at our coworking space
  • Personal Equipment Policy: no tech troubles — you’ll get a MacBook and everything you need for comfortable and efficient work
  • Learning and Development Opportunities: it's a real pleasure for us to watch you learn, so we're happy to cover your learning and development costs, as well as English courses. Besides this, everyone in JATAPP gets access to the Projector Library
  • Community of like-minded people: at JATAPP you will work in a team of like-minded people who are ready to launch a product, run a marathon, or climb Hoverla together
  • Creative freedom: we encourage initiative and creative thinking, so with us, you can be yourself and have the freedom of professional expression
  • Legal & Finance Support: we cooperate with the best financiers and lawyers who will be ready to help solve any of your questions upon request
  • Time-off Policy: 20 vacation days per year, 5 days for sick leave without medical confirmation, unlimited sick leaves with a doctor's note, 3 personal days, and 2 days off for special events or occasions
  • Fulltime
Read More
Arrow Right
New

Full Stack Developer Senior

We're on the lookout for a Full Stack Dev Senior to take our Product Team to the...
Location
Location
Spain , Valencia; Madrid
Salary
Salary:
35000.00 - 51750.00 EUR / Year
shakersworks.com Logo
Shakers
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 4+ years of professional development experience
  • Bachelor’s degree in Computer Science, Telecommunications Engineering, Mathematics or a closely related STEM field
  • Real experience building full stack applications with Node.js, Next.js, Vue/Angular, or similar
  • Proven experience designing RESTful APIs, microservices, and event-driven systems (Kafka)
  • Hands-on with Hexagonal Architecture, DDD, SOLID, and Clean Code practices
  • Familiarity with AWS services (EC2, S3, CloudFront, Lambda)
  • Strong understanding of web security best practices (authentication, authorization, data encryption)
  • Experience with quality and security tooling (JWT, OAuth, SonarQube, Kiuwan)
  • Highly proactive
  • Excellent communicator and team player
Job Responsibility
Job Responsibility
  • Architect, build and maintain scalable, reliable backend services in Node.js (e.g. NestJS) and server-side applications with Next.js
  • Design and implement microservices architectures and event-driven pipelines (Kafka or similar)
  • Partner with UI/UX designers to build responsive, high-quality pixel-perfect frontends using React, Vue, or Angular, and integrate with our RESTful and GraphQL APIs
  • Optimize load times, bundle sizes, and user interactions
  • Champion our “Shakers Agile” methodology—own your GitLab workflow, write tests, enforce CI/CD best practices, and automate where it makes sense (AWS EC2/S3/CloudFront/Lambda)
  • Apply Hexagonal Architecture, Domain-Driven Design (DDD), Clean Code, and SOLID principles
  • Implement authentication/authorization (JWT, OAuth), enforce data protection, and integrate code-quality/security tools (SonarQube)
What we offer
What we offer
  • Wellness programs
  • Gym access
  • English classes
  • Medical insurance
  • Organic fruit
  • Free caffeine and theine
  • Quarterly bonus based on performance & potential and Shakers global results
  • Fulltime
Read More
Arrow Right
New

Senior Crypto Developer

We are seeking a talented and driven Senior Crypto Developer to join our dynamic...
Location
Location
Salary
Salary:
Not provided
gamdom.com Logo
gamdom
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of backend development experience, including significant work with Node.js and TypeScript
  • Strong understanding of blockchain fundamentals, especially UTXO vs. account-based models
  • Hands-on experience with Ethereum, Bitcoin, and L2s (e.g., Arbitrum, Optimism, Polygon)
  • Familiarity with Web3 libraries such as ethers.js, web3.js, and experience interacting with RPC APIs
  • Deep understanding of secure wallet management practices and MPC technology
  • Proficiency in front-end development using React and Web3 provider integrations
  • Experience in designing high-availability systems and real-time transaction infrastructure
  • Strong emphasis on security, performance, and scalability
  • Excellent documentation and communication skills
Job Responsibility
Job Responsibility
  • Own backend micro-services in Node.js/TypeScript that interface with multiple blockchains, following clean-architecture and test-driven development principles
  • Run and optimize bitcoin-core (BTC/LTC) nodes, manage UTXO sets, fee estimation, mempool monitoring, and wallet RPCs for high-volume deposit and withdrawal flows
  • Build and maintain Ethereum transaction pipelines using ethers.js - handle ERC-20/ERC-721 token transfers, reorgs, transaction signing/broadcasting, and nonce management
  • Integrate additional L1/L2 networks by abstracting blockchain-specific logic behind a unified service layer, enabling rapid support for new tokens and chains
  • Leverage Fireblocks or similar MPC/custodial APIs to manage secure wallet operations, policy enforcement, and multi-signature approval flows
  • Develop and maintain frontend Web3 wallet integrations (e.g., MetaMask, WalletConnect, Ledger) using TypeScript/React, delivering seamless UX and real-time transaction feedback
  • Build scalable deposit & withdrawal infrastructure, including queueing systems, idempotent webhooks, reconciliations, wallet sweeps, address management, and fee optimization
  • Embed security and compliance features, KYT screening, whitelisting, secrets management, and rate-limiting into application code and CI/CD pipelines
  • Monitor blockchain health and system performance establish SLAs, create alerting systems, implement incident response plans, and lead post-mortems
  • Document APIs, architecture decisions, and operational runbooks
What we offer
What we offer
  • A dynamic and supportive work environment
  • Opportunities for professional growth and development in a rapidly evolving industry
  • Competitive salary and performance-based incentives
  • The chance to work with a passionate team in the forefront of blockchain innovation
Read More
Arrow Right
New

Senior Backend Developer

PixelPlex is hiring an experienced Backend Developer to the Web department.
Location
Location
Salary
Salary:
Not provided
pixelplex.io Logo
PixelPlex
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • At least 5 years of development experience
  • Experience in developing microservices applications
  • Knowledge of standards and principles for building application architecture
  • At least 3 years of experience in developing Node.js applications
  • knowledge and experience working with Nest.js would be a plus
  • Experience working with PostgreSQL and a good understanding of database architecture principles
  • Experience working with message brokers (RabbitMQ, Kafka)
Job Responsibility
Job Responsibility
  • Development of backend for crypto wallets, crypto explorers, and other blockchain-related applications
  • Development of backend for mobile applications (interaction with blockchain)
  • Work in a team of 3-6 people using established methodologies (Scrum or Waterfall)
  • Designing application architecture
  • Maintaining project technical documentation
  • Fulltime
Read More
Arrow Right
New

Senior Fullstack Developer

As a Senior Fullstack Developer, you will be a key contributor to our core produ...
Location
Location
Portugal
Salary
Salary:
4650.00 - 5800.00 EUR / Month
fundraiseup.com Logo
Fundraise Up
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 7+ years of professional fullstack development experience
  • Deep understanding of modern JavaScript (event loop, closures, promises, prototypes)
  • Expert-level proficiency with React and its ecosystem (familiarity with Vue is a plus)
  • Strong backend expertise with Node.js (experience with Koa or NestJS is highly preferred)
  • Experience with Webpack configuration, performance optimization, and profiling
  • A keen eye for detail and a high sense of ownership and accountability for your work
Job Responsibility
Job Responsibility
  • Design, build, and maintain resilient frontend and backend features using React and Node.js
  • Develop our core products, including donation checkouts, embeddable widgets, and donor/partner portals
  • Architect and develop system components that scale across millions of monthly transactions
  • Write clean, well-documented, and thoroughly testable code
  • Drive architecture and technical design discussions to find elegant solutions to complex problems
  • Mentor peers by conducting thoughtful code reviews and providing constructive feedback
  • Partner with product managers and designers to clarify requirements and shape the roadmap
  • Proactively identify and resolve bugs, performance bottlenecks, and optimization opportunities
What we offer
What we offer
  • 31 days off
  • 100% paid telemedicine plan
  • Home Office Setup Assistance: the company offers assistance with purchasing furniture (office chair, office desk, monitor) and other items to create a comfortable workspace
  • English learning courses
  • Relevant professional education
  • Gym or swimming pool
  • Co-working
  • Remote working
  • Stock options
  • Fulltime
Read More
Arrow Right
New

Senior Fullstack Developer

As a Senior Fullstack Developer, you will be a key contributor to our core produ...
Location
Location
Armenia
Salary
Salary:
Not provided
fundraiseup.com Logo
Fundraise Up
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 7+ years of professional fullstack development experience
  • Deep understanding of modern JavaScript (event loop, closures, promises, prototypes)
  • Expert-level proficiency with React and its ecosystem (familiarity with Vue is a plus)
  • Strong backend expertise with Node.js (experience with Koa or NestJS is highly preferred)
  • Experience with Webpack configuration, performance optimization, and profiling
  • A keen eye for detail and a high sense of ownership and accountability for your work
Job Responsibility
Job Responsibility
  • Design, build, and maintain resilient frontend and backend features using React and Node.js
  • Develop our core products, including donation checkouts, embeddable widgets, and donor/partner portals
  • Architect and develop system components that scale across millions of monthly transactions
  • Write clean, well-documented, and thoroughly testable code
  • Drive architecture and technical design discussions to find elegant solutions to complex problems
  • Mentor peers by conducting thoughtful code reviews and providing constructive feedback
  • Partner with product managers and designers to clarify requirements and shape the roadmap
  • Proactively identify and resolve bugs, performance bottlenecks, and optimization opportunities
What we offer
What we offer
  • 31 days off
  • 100% paid telemedicine plan
  • Home Office Setup Assistance: the company offers assistance with purchasing furniture (office chair, office desk, monitor) and other items to create a comfortable workspace
  • English learning courses
  • Relevant professional education
  • Gym or swimming pool
  • Co-working
  • Remote working
  • Stock options
  • Fulltime
Read More
Arrow Right
Welcome to CrawlJobs.com –
Your Global Job Discovery Platform
At CrawlJobs.com, we simplify finding your next career opportunity by bringing job listings directly to you from all corners of the web. Using cutting-edge AI and web-crawling technologies, we gather and curate job offers from various sources across the globe, ensuring you have access to the most up-to-date job listings in one place.
Jobs by Category
Art and Entertainment Jobs Banking Jobs Call Center Jobs Construction Jobs Consulting Jobs Customer Service Jobs Education Jobs Energy Jobs Finance Jobs Gastronomy Jobs Health and Beauty Jobs Hospitality and Tourism Jobs Human Resources Jobs Insurance Jobs IT - Administration Jobs IT - Software Development Jobs Legal Jobs Logistics Jobs Manufacturing Jobs Marketing, Digital Marketing, SEO, SEM Jobs Media Jobs Nursing Jobs Office Administration Jobs Pharmacy Jobs Physical Work Jobs Public Relations Jobs Public Sector Jobs Purchasing Jobs Quality Control Jobs Real Estate Jobs Research and Development Jobs Sales Jobs
Job Positions Jobs by Country
United States Jobs United Kingdom Jobs India Jobs Australia Jobs Canada Jobs Poland Jobs Ireland Jobs Spain Jobs
Company
Blog About Us Contact
Follow Us
Facebook
X (Twitter)
LinkedIn
Instagram
© 2025 CrawlJobs Ltd. All Rights Reserved
Terms & Conditions Privacy Policy