CrawlJobs Logo
Fundraise Up Logo Fundraise Up · IT - Software Development

Fullstack Developer

Armenia 3800.00 - 5100.00 USD / Month · Job Posted June 30, 2026
Apply Position
Job Link Share

Job Description

As a Senior Fullstack Developer, you will be a key contributor to our core product, building and scaling features that are central to the donation experience for millions of users. You'll leverage your expertise in Node.js, React, and TypeScript to develop complex components—from dynamic donation widgets to data-driven admin dashboards—with a relentless focus on code quality, scalability, and user experience. This is an ideal opportunity if you love solving real-world problems at scale and want to grow within a mission-driven, high-impact engineering culture.

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
  • At Fundraise Up, AI is a default tool, not an experimental one. We expect every team member to actively use AI in their day-to-day work, identify where AI can change the shape of problems in their function, and grow their fluency as the tools evolve. You should already be using AI meaningfully in your work and understand where it adds value and how it can improve the way you operate

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

Nice to have

  • Experience with MongoDB, ClickHouse, or Elasticsearch
  • Familiarity with Docker, CI/CD pipelines, or cloud infrastructure
  • Contributions to open-source projects or a strong personal portfolio
  • Curiosity and a hypothesis-driven mindset
  • Ability to communicate complex analytical concepts to non-technical audiences
  • Detail-oriented with a strong sense of ownership
  • Comfort working in fast-paced, data-rich environments

What we offer

  • 31 days off
  • 100% paid telemedicine plan
  • Home Office Setup Assistance
  • English learning courses
  • Relevant professional education
  • Gym or swimming pool
  • Co-working
  • Remote working
Fundraise Up - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Fullstack Developer

8 matching positions

New

Fullstack Developer

As a Senior Fullstack Developer, you will be a key contributor to our core produ...
Location
Location
Serbia
Salary
Salary:
527000.00 - 691500.00 RSD / 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
  • Private medical insurance for the employee and their family
  • 20 paid vacation days per year
  • 15 paid public holidays per year
  • 5 company-paid sick leave days
  • English learning courses
  • Relevant professional education
  • Gym or swimming pool
  • Home Office Setup Assistance: the company offers assistance with purchasing furniture (office chair, office desk, monitor) and other items to create a comfortable workspace
  • Co-working
  • Remote working
  • Fulltime
Read More
Arrow Right
New

Fullstack Developer

As a Senior Fullstack Developer, you will be a key contributor to our core produ...
Location
Location
Turkey
Salary
Salary:
3800.00 - 5100.00 USD / 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
  • Actively use AI in their day-to-day work
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
  • Fulltime
Read More
Arrow Right
New

Fullstack Developer

Location
Location
Georgia
Salary
Salary:
10500.00 - 13800.00 GEL / 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
  • Fulltime
Read More
Arrow Right
New

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
  • Actively use AI in day-to-day work
What we offer
What we offer
  • Private medical insurance for the employee and their family
  • 22 paid vacation days per year
  • Up to 14 paid public holidays per year
  • 5 company-paid sick leave days
  • English learning courses
  • Relevant professional education
  • Gym or swimming pool
  • Home Office Setup Assistance
  • Co-working
  • €50 monthly allowance to cover internet and mobile phone expenses
  • Fulltime
Read More
Arrow Right
New

Fullstack Developer

We invite a Fullstack Developer to join our team. About us: On the market since ...
Location
Location
Latin America
Salary
Salary:
Not provided
noveogroup.com Logo
Noveo
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years fullstack JavaScript/TypeScript experience — strong TypeScript with Angular on the frontend and Node.js (NestJS preferred) on the backend
  • Proven experience designing and consuming REST APIs
  • familiarity with message brokers (RabbitMQ, Kafka) for asynchronous processing and data pipelines
  • Comfortable operating production systems: monitoring and alerting (Prometheus, Grafana, Datadog or similar), troubleshooting in a high-reliability environment
  • Solid testing culture (Jest, Playwright — unit, integration, E2E) and secure development practices (OWASP Top 10)
  • AI fluency: you’re an AI-first adopter — you use tools like Claude Code, Cursor, or Copilot extensively in your daily engineering workflow, and have opinions on how AI should reshape development and operations processes
  • Autonomous and able to onboard quickly — contractor context, structured onboarding provided
  • English required (strong B2 or higher)
  • Location: Latin America
Job Responsibility
Job Responsibility
  • Industrialize the product — review current processes and put AI-first processes in place across the product, working with the junior engineer in Paris and in collaboration with the US field teams
  • Fullstack JavaScript — build the product features of the platform: fleet management, device transfers, fleet detail and monitoring views (frontend + backend)
  • IoT end-to-end operations — collaborate with manufacturing and logistics to ensure smooth end-to-end IoT operations
  • US rollouts & monitoring — be present for customer rollouts during US hours
  • ensure monitoring and timely, quality delivery of existing and new formats
  • GenAI / agentic — contribute to the agentic evolution of the platform (ramping up from October with the senior engineer)
What we offer
What we offer
  • A competitive salary
  • Paid vacation and sick leave
  • Working on exciting projects with a team of professionals
  • Opportunities for learning and practicing new technologies
  • internal training
  • Participating in inner meetups and permanent experience exchange with colleagues
  • Well-defined development processes and methodologies
  • English and/or French language learning for free with internal teachers within working hours
  • Reimbursement of medical fees, massage, or sports
  • Fulltime
Read More
Arrow Right
New

Fullstack Developer

We're looking for a Full-Stack Developer to join our team and help build a multi...
Location
Location
Turkey , Ankara; İstanbul
Salary
Salary:
Not provided
amaris.com Logo
Amaris Consulting
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of professional software development experience
  • Strong TypeScript and Node.js skills
  • Experience with Next.js and React
  • PostgreSQL and ORM experience (Drizzle, Prisma, or similar)
  • Good understanding of Redis and queue/worker architectures
  • Experience designing and building REST APIs
  • Knowledge of JWT-based authentication and multi-tenant architectures
  • Experience with Socket.io or similar real-time technologies
  • Familiarity with Docker, Git, and monorepo workflows (pnpm/Turborepo)
Job Responsibility
Job Responsibility
  • Build and maintain REST APIs using Fastify
  • Develop dashboard features with Next.js (App Router)
  • Manage PostgreSQL schemas and database migrations
  • Implement background jobs and workflows using BullMQ
  • Develop third-party integrations (WhatsApp, Telegram, etc.)
  • Participate in code reviews and testing
  • Fulltime
Read More
Arrow Right
New

Fullstack Developer

We are looking for a Fullstack Developer to join a long-term contract opportunit...
Location
Location
United States , Southfield
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • At least 5 years of experience in application development, software analysis, or a closely related technical field
  • Strong hands-on experience with the Microsoft technology stack, including .NET, C#, .NET Framework, and Azure cloud services
  • Solid front-end development experience with React and JavaScript, including the ability to contribute to user interface improvements
  • Bachelor’s or master’s degree in information systems, business, or a related discipline, or equivalent practical experience
  • Working knowledge of software development best practices, structured delivery processes, and collaborative engineering methods
  • Experience using large language models and AI-assisted development tools, including prompt design, output evaluation, and structured response techniques
  • Familiarity with retrieval-augmented generation, grounding methods, agentic AI concepts, and common AI risks such as hallucinations, prompt injection, and data exposure
  • Strong communication, collaboration, and stakeholder engagement skills, with the ability to connect technical solutions to measurable business outcomes
Job Responsibility
Job Responsibility
  • Design, build, and enhance custom applications and websites using modern full-stack development practices across front-end and back-end environments
  • Partner with business analysts, project managers, relationship managers, and support teams to turn business goals into effective technical solutions
  • Strengthen development capabilities by introducing practical tools, frameworks, and engineering approaches that improve delivery quality and team efficiency
  • Contribute to architectural planning by helping integrate both new and existing development methods into broader application design strategies
  • Create and streamline automated development workflows while advancing the use of monitoring and application management solutions
  • Support planning and execution for application maintenance, performance oversight, and long-term support initiatives
  • Participate in change management activities tied to application enhancements, upgrades, and enterprise system integrations
  • Present project updates, technical recommendations, and support status clearly to IT leadership and business stakeholders
What we offer
What we offer
  • Medical
  • Vision
  • Dental
  • Life and disability insurance
  • 401(k) plan
  • Fulltime
Read More
Arrow Right

Fullstack Developer

As a Full Stack Developer, you'll play a critical role in designing, developing,...
Location
Location
Philippines , Makati City
Salary
Salary:
Not provided
jobs.360resourcing.co.uk Logo
360 Resourcing Solutions
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Minimum 3 years experience
  • Proficiency in Java and Spring Boot for backend development
  • Hands-on experience with JavaScript, TypeScript, and front-end frameworks (Angular)
  • Familiarity with Linux environments for application deployment and troubleshooting
  • Experience with API development and integration
Job Responsibility
Job Responsibility
  • Design & Develop High-Quality Applications – Build scalable, efficient, and secure software solutions using Java, Spring Boot, and modern front-end technologies
  • Collaborate & Innovate – Work with diverse developers, contribute ideas, and explore emerging Fintech solutions to drive innovation
  • Front-End Development – Develop dynamic user interfaces using JavaScript, jQuery, and Angular
  • Back-End Development – Implement robust APIs and business logic using Java, Spring Boot, and related backend technologies
  • Deployment & Cloud Integration – Deploy and support Java applications in Linux environments, and work with CI/CD pipelines
  • Financial & Trading Systems – Engage in Fintech, trading, and secure token solutions (e.g., Bitcoin, digital assets), understanding their business impact
  • DevOps & Cloud (AWS Preferred) – Explore AWS DevOps practices for automation and cloud deployment (a plus but not mandatory)
  • Collaborate & Innovate – Work with diverse developers, contribute ideas, leverage AI-assisted development tools responsibly, and explore emerging technologies and Fintech solutions to drive innovation and continuous improvement
What we offer
What we offer
  • Happiness & Well-Being – Say goodbye to Sunday dread! We prioritize work-life balance, ensuring a workplace where trust and respect thrive. With a hybrid setup (only 2x onsite per month), you have the flexibility to do your best work from where you thrive
  • Transparency & Trust – Open communication is at the heart of what we do. We foster a culture of clarity, accountability, and integrity, ensuring you always have a voice
  • Excellence & Growth – We are committed to continuous learning and innovation. With training, certifications, and career development opportunities, we support your professional growth every step of the way
  • Diversity & Inclusion – We embrace diverse perspectives, creating an empowering and inclusive workplace where everyone can contribute meaningfully
  • Collaboration & Impact – Work alongside industry leaders, developing high-frequency, low-latency trading applications that drive fairness and transparency in financial markets worldwide
Read More
Arrow Right