Jobs Fullstack

Project description

Project is a web application running and visualizing scientific experiments and mathematical models. It focuses on allowing users to visualize different graphical plots - hence Plotly is in the center of work.

Responsibilities

The purpose of this role is to design, build, and maintain robust, scalable, and production ready software. As a senior full stack developer, the role leads the development of backend services in Python and frontend interfaces in React according to UI/UX specifications, ensuring high reliability, strong engineering standards, and a seamless user experience. It also delivers high quality components across the stack, efficient CI/CD pipelines, resilient production deployments, and contributes to architectural decisions, continuous performance improvements, maintainability, usability, and clear technical documentation that strengthens overall platform robustness and team productivity.

Skills

Must have

The person must work with minimum supervision, probably with at least 5 years of experience.

Strong backend engineering in Python (API development, services, data workflows)

Frontend development expertise in React (components, state management, UI integration)

Solid experience with CI/CD pipelines

Solid experience in Linux command line

Proven track record operating and supporting production systems

Familiarity with AI augmented solutions, including RAG pipelines or multi agent architectures.

Strong testing practices and software engineering fundamentals

Ability to collaborate on architecture, code reviews, and cross functional technical decisions

Nice to have

Knowledge of OpenShift

Experience with AI tools (Lang chain, Lang graph, vector-databases, etc. )

Experience with document search applications

We are looking for a motivated Full Stack .NET Developer to work on both internal company products and commercial client projects. This position is ideal for candidates who are eager to grow professionally, take responsibility, and deliver high-quality results.

Requirements:

• Experience with ASP.NET MVC / ASP.NET Core
• Understanding of core concepts: OOP, OOD, Design Patterns
• Hands-on experience with React or Vue (Required!)
• Solid knowledge of CSS
• Basic understanding of SQL
• Familiarity with Unit and Integration testing
• English — Upper-Intermediate level
• Responsibility, attention to detail, and willingness to learn

Nice to have:

• Experience with Umbraco CMS
• Understanding of REST API
• Experience working with Git
• Basic knowledge of DevOps processes

Responsibilities:

• Develop and maintain commercial web applications
• Work on internal company projects
• Integrate front-end (React/Vue) with .NET back-end
• Work with MS SQL databases
• Write Unit and Integration tests
• Take part in technical discussions and team planning

We offer:

• Remote work in a comfortable environment
• Competitive salary based on knowledge and performance
• Full-time schedule (8 hours per day)
• Work with modern technologies: .NET Core, .NET, React/Vue
• Support and mentorship from experienced developers
• Honest and transparent management
• Growth opportunities through real tasks with different complexity levels

We are expanding the team and need a Senior JavaScript Fullstack Developer to work on a US-based product in the marketplace analytics space.

The product analyzes US marketplaces to track product sales volume and trends. You will focus on building a new application together with a senior US-based engineer, working in a paired setup.

RESPONSIBILITIES:

• Build and develop a new fullstack application using the JavaScript ecosystem

• Work in pair with a US-based senior engineer

• Collaborate with BA, Data Engineers, DevOps, PM, and Architect

• Take part in planning, architecture discussions, and delivery

• Integrate with data pipelines and ML-driven components

• Ensure performance, scalability, and reliability of the application

• Contribute to technical decisions and engineering practices

TECH STACK:

JavaScript (Node.js, React or similar), TypeScript, REST APIs, AWS, Docker

REQUIREMENTS:

• 4+ years of experience with React, TypeScript and Next.js

• 1.5+ years of experience with Node.js 

• Experience with cloud environments, preferably AWS will be a plus

• Understanding of data-heavy systems

• Experience working in distributed teams

• Strong communication skills in English (B2+ or higher)

WE OFFER:

• Flexible working format: fully remote, hybrid, or office-based (Lviv, Ukraine)

• A supportive and friendly work environment

• IT Club Loyalty membership

• Online English classes

• Long-term stable collaboration with established US client

• Private healthcare package

• Access to professional development tools and training

• Team-building activities and company perks

N-iX is a global software development company founded in 2002, connecting over 2,400+ tech professionals across 40+ countries. We deliver innovative technology solutions in cloud computing, data analytics, AI, embedded software,IoT, and more to global industry leaders and Fortune 500 companies. Join us to create technology that drives real change for businesses and people across the world.

Our client is a global UK-based financial services and investment banking organization developing an AI-powered document processing and automation platform used across multiple businesses within the wider banking group. The platform leverages modern cloud and AI technologies to transform legacy workflows, enhance data quality, and accelerate digital decision-making.

Position Overview:
 

We are looking for a Tech Lead Full Stack Engineer with strong hands-on engineering expertise leading agile software development teams. The ideal candidate will define and drive the technical strategy of the platform, guide engineers in delivering scalable and secure systems, and actively contribute to architectural decisions and solution design.

This role requires both strong technical depth and leadership capabilities, particularly in environments involving Google Cloud, microservices, APIs, Python and data-intensive processing.

The Tech Lead will work closely with product, architecture, data science, and engineering teams to ensure high-quality delivery and alignment with business outcomes.

Join Our Team & Earn Exciting Bonuses!
As a special incentive, we’re offering a Welcome Bonus of $3,000 USD for a new hire. Plus, if you refer a friend who gets hired, you’ll receive a Referral Bonus of $2000 USD!

Key Responsibilities:

• Define and communicate the technical vision, architecture, and engineering roadmap for the team and platform.
• Lead engineers, conduct code reviews, provide architectural guidance, and ensure adherence to engineering standards.
• Lead the technical delivery lifecycle from design and development to deployment and maintenance.
• Build scalable, high-performance microservices and UI and APIs using modern frameworks and cloud-native design principles.
• Oversee integration of AI components (E.g Google Cloud, Vertex AI, Gemini models, and LLM evaluation frameworks)
• Promote test-driven development, automate testing pipelines, and ensure robust, maintainable code.
• Work with product managers, architects, BAs, and business teams to translate business needs into technical solutions.
• Contribute to product strategy, identify technical opportunities, and propose improvements to shape future releases.
• Drive best practices for cloud infrastructure, security, observability, and performance optimization on Google Cloud.
   

Requirements:

• 8+ years of experience in software engineering with at least 3+ years in a Tech/Team Lead role.
• Strong background in software/platform/database design in data-heavy or distributed environments.
• Hands-on experience with microservices, React JS, and cloud-native architectures.
• Proficiency in Python.
• Solid Cloud experience (GCP is prefferable) 
• Hands-on experience building and integrating LLM pipelines, handling conversation memory, and long-running workflows
• Proficiency in RAG architectures with a focus on optimized search retrieval and scalable data indexing strategies
• Practical experience with AI output validation, automated evaluation strategies, and secure AI integration
• Experience with LLM observability, tracing (e.g., LangSmith, Langfuse), and token usage/cost optimization
• Experience implementing automated testing frameworks, CI/CD pipelines, and TDD/BDD practices.
• Strong understanding of software engineering principles: scalability, performance, reliability, observability.
• Proven experience leading engineering teams in agile delivery environments.
• Advanced English and excellent communication skills and ability to work with both technical and non-technical stakeholders.
   

Nice to Have:

• Prior exposure to document processing platforms, OCR, NLP, or workflow automation.
• Experience in financial services or other regulated industries.
• Familiarity with architectural frameworks (C4 modeling, DDD, event-driven systems).

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

N-iX is a global software development company founded in 2002, connecting over 2,400+ tech professionals across 40+ countries. We deliver innovative technology solutions in cloud computing, data analytics, AI, embedded software,IoT, and more to global industry leaders and Fortune 500 companies. Join us to create technology that drives real change for businesses and people across the world.

Our client is a global UK-based financial services and investment banking organization developing an AI-powered document processing and automation platform used across multiple businesses within the wider banking group. The platform leverages modern cloud and AI technologies to transform legacy workflows, enhance data quality, and accelerate digital decision-making.

Position Overview:
 

We are looking for a Tech Lead Full Stack Engineer with strong hands-on engineering expertise leading agile software development teams. The ideal candidate will define and drive the technical strategy of the platform, guide engineers in delivering scalable and secure systems, and actively contribute to architectural decisions and solution design.

This role requires both strong technical depth and leadership capabilities, particularly in environments involving Google Cloud, microservices, APIs, Python and data-intensive processing.

The Tech Lead will work closely with product, architecture, data science, and engineering teams to ensure high-quality delivery and alignment with business outcomes.

Join Our Team & Earn Exciting Bonuses!
As a special incentive, we’re offering a Welcome Bonus of $3,000 USD for a new hire. Plus, if you refer a friend who gets hired, you’ll receive a Referral Bonus of $2000 USD!

Key Responsibilities:

• Define and communicate the technical vision, architecture, and engineering roadmap for the team and platform.
• Lead engineers, conduct code reviews, provide architectural guidance, and ensure adherence to engineering standards.
• Lead the technical delivery lifecycle from design and development to deployment and maintenance.
• Build scalable, high-performance microservices and UI and APIs using modern frameworks and cloud-native design principles.
• Oversee integration of AI components (E.g Google Cloud, Vertex AI, Gemini models, and LLM evaluation frameworks)
• Promote test-driven development, automate testing pipelines, and ensure robust, maintainable code.
• Work with product managers, architects, BAs, and business teams to translate business needs into technical solutions.
• Contribute to product strategy, identify technical opportunities, and propose improvements to shape future releases.
• Drive best practices for cloud infrastructure, security, observability, and performance optimization on Google Cloud.
   

Requirements:

• 8+ years of experience in software engineering with at least 3+ years in a Tech/Team Lead role.
• Strong background in software/platform/database design in data-heavy or distributed environments.
• Hands-on experience with microservices, React JS, and cloud-native architectures.
• Proficiency in Python.
• Solid Cloud experience (GCP is prefferable) 
• Hands-on experience building and integrating LLM pipelines, handling conversation memory, and long-running workflows
• Proficiency in RAG architectures with a focus on optimized search retrieval and scalable data indexing strategies
• Practical experience with AI output validation, automated evaluation strategies, and secure AI integration
• Experience with LLM observability, tracing (e.g., LangSmith, Langfuse), and token usage/cost optimization
• Experience implementing automated testing frameworks, CI/CD pipelines, and TDD/BDD practices.
• Strong understanding of software engineering principles: scalability, performance, reliability, observability.
• Proven experience leading engineering teams in agile delivery environments.
• Advanced English and excellent communication skills and ability to work with both technical and non-technical stakeholders.
   

Nice to Have:

• Prior exposure to document processing platforms, OCR, NLP, or workflow automation.
• Experience in financial services or other regulated industries.
• Familiarity with architectural frameworks (C4 modeling, DDD, event-driven systems).

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

Requirements:

• 2+ years of commercial experience with PHP (Laravel, Composer)
• 3+ years of Shopify development experience
• Proven expertise with Shopify Plus (Apps, Shops, migrations, Liquid, GraphQL)
• Experience developing apps published on the Shopify Marketplace
• 2+ years of experience with JavaScript (TypeScript, React)
• Strong knowledge of HTML5, CSS3, JavaScript
• Experience with MySQL and Shopify API
• Proficiency with Git
• Hands-on experience in speed optimization and SEO
• Knowledge of Amazon integrations
   

Nice to have:

• Solid experience in adaptive/responsive and cross-platform design
• Experience with other e-commerce platforms
• Background in custom web applications development
• Familiarity with tools such as Gulp, Grunt, Webpack
   

Responsibilities:

• Develop, customize, and optimize Shopify stores
• Work with Shopify API and integrations
• Implement new features and troubleshoot issues
• Participate in the development of new projects on Shopify
• Support and maintain existing projects
• Influence development processes and suggest innovative solutions
• Build and maintain Shopify applications (e.g., connectors)
   

We Offer:

• Flexible work schedule
• Remote work opportunity (home office)
• Friendly team and supportive management
• Chance to work on impactful projects

Location: Remote

Compensation: Competitive, dependent on experience

Type: Full-Time (2+ Months, potential to extend)

Reports to: Managing Partner

About HELO Solutions

HELO Solutions is an AI consulting and product development company. We build production AI systems — agents, automation platforms, and intelligent workflows — for enterprise clients across industries including CPG, financial services, legal, and music. We also develop our own AI products. We are a small, high-output team that ships fast, operates with minimal bureaucracy, and holds a high bar for work that actually runs in production and gets used.

About the Role

We are hiring an AI Engineer who has built agents that are live in production at real companies — not demos, not prototypes that died after a pitch, not research projects. We need someone who has shipped agentic systems that enterprises depend on every day, and who understands the full lifecycle: scoping the business problem, designing the agent architecture, integrating with messy enterprise systems, building evaluation and monitoring, and keeping it running reliably.

This role sits across two priorities equally: building our internal multi-agent AI platform and delivering agent-based solutions directly to enterprise clients. You will work closely with our engineering team and the Managing Partner. You will have significant autonomy and direct impact on both the product and the business.

Responsibilities

• Design, build, and deploy AI agents and multi-agent systems that solve real business problems for enterprise clients.
• Architect and implement agent orchestration — coordination, handoffs, shared state, and communication between specialized agents within our multi-agent platform.
• Integrate agents with enterprise systems (ERPs, CRMs, accounting platforms, APIs) to execute workflows end-to-end in production environments.
• Build evaluation frameworks and production monitoring for deployed agents — logging agent decisions, tracking accuracy, cost, and latency, and implementing feedback loops.
• Work within client systems to understand existing workflows and translate messy business processes into agent-executable architectures.
• Identify and codify repeatable deployment patterns across engagements to accelerate future delivery.
• Maintain deep, current knowledge of LLM capabilities, agent frameworks, implementation patterns, and the evolving AI product development stack.
• Deliver technical artifacts including agent skills, sub-agents, API integrations, and supporting infrastructure that will be used in production workflows.

• Contribute to internal product development, shaping the architecture and capabilities of our platform alongside the engineering team.

   

Requirements

• Production agent experience — You have built AI agents that are currently running in production for real companies. You can point to systems you built that people use every day.
• Python proficiency — Strong programming skills with Python as your primary language. You ship clean, maintainable production code.
• LLM fluency — Deep working knowledge of prompt engineering, context window management, and model selection. You know when to use a smaller model vs. a frontier model and why.
• Enterprise integration experience — You have connected agents to real business systems: ERPs (Acumatica, NetSuite, SAP), CRMs (Salesforce, HubSpot), accounting platforms (QuickBooks, Xero), or comparable enterprise APIs.
• Evaluation and monitoring in production — You have built observability into agents. You know how to log agent decisions, track accuracy and cost, and build feedback loops that improve agent performance over time.
• Multi-agent orchestration — You have designed or built systems where multiple specialized agents coordinate, hand off tasks, and share state to accomplish complex workflows.
• High agency — You can take a messy business problem and turn it into a working agent architecture without hand-holding. You thrive in ambiguity and move fast with minimal direction.
• Portfolio / case study — You must be able to walk us through at least one agent system you built that is live and being used by a real company. We want to understand the business problem, your architecture decisions, and how it is performing.

Nice-to-Haves

• TypeScript, Java, or a strong second language beyond Python.
• Customer-facing or consulting experience — you have worked directly with clients or stakeholders to scope and deliver technical projects.
• Domain experience in financial services, CPG, legal, or the music industry.
• Cost optimization thinking — token management, caching strategies, model routing to keep agent operating costs viable for clients.
• Experience with workflow orchestration tools (Temporal, Airflow, Step Functions, or similar).

• Former technical founder or early-stage startup experience — you have worn many hats and shipped under resource constraints.

   

How to Apply

Send us your resume and a brief write-up of an agent system you built that is live in production. We want to know: What was the business problem? What was your architecture? How is it performing? If multiple people contributed, tell us which part was yours. Keep it concise — a few paragraphs is plenty.

What We Offer

• Remote-first, global team — work from anywhere.
• Direct impact — you will shape both our products and our client engagements from day one.
• Small team, no bureaucracy — decisions happen fast, your work ships fast.
• Exposure to diverse enterprise AI challenges across multiple industries and verticals.

• Competitive compensation dependent on experience.

   

HELO Solutions LLC is a Delaware-based company. We are an equal opportunity employer committed to building a diverse team.

Role Summary 

You are an AI-native full-stack developer who loves building things that actually work — fast, reliable, and beautiful. You’ll lead the technical development of client platforms, automation tools, and MX² — our proprietary AI-powered marketing product. 

From back-end architecture to front-end implementation, you’ll translate creative and strategic concepts into performant, scalable code. You understand that clean, efficient development drives business results, and you thrive where technology, marketing, and 
creativity intersect. 

You combine deep technical ability with curiosity, speed, and a maker mindset — using AI-assisted coding tools to deliver 10× output while maintaining precision and structure. 

Key Responsibilities 

Product & Platform Development 

• Develop, test, and maintain web applications and automation tools for clients and MX². 
• Build secure, scalable APIs and integrations (OpenAI, Meta, Google, CRM systems, analytics APIs, etc.). 
• Implement AI-driven features using OpenAI, LangChain, or similar frameworks. 
• Maintain clean repositories and enforce version control and documentation standards. 
• Translate Figma or design concepts into responsive, high-performance front-end experiences (React,Next.js, Tailwind, Webflow custom code). Vue.js, Nuxt.js is crucial to know.

AI Integration & Automation 

• Use GPT-based workflows and automation tools to accelerate development and testing. 
• Collaborate with the MX² team to evolve our AI-driven marketing platform architecture. 
• Integrate third-party APIs, webhooks, and AI services for marketing automation, analytics, and reporting. 
• Explore new AI coding assistants, QA automation, and deployment pipelines to boost efficiency. 

Performance & Reliability 

• Ensure platform stability, speed, and scalability across all environments.
• Conduct regular code reviews and implement automated testing. 
• Collaborate with QA and Project Management to guarantee smooth client deliveries. 
• Proactively detect and resolve bugs before client impact. 

Cross-Team Collaboration 

• Work closely with Design (UI/UX), Performance Media, and Data teams to bring digital products and dashboards to life. 
• Support campaign tracking implementation (GTM, GA4, Meta Pixel APIs). 
• Contribute to technical documentation, scoping, and sprint planning. 
• Provide guidance and mentoring for junior or freelance developers. 

Qualifications & Skills 
• Experience: 3+ years in full-stack development with JavaScript / TypeScript (Node.js, React, Next.js or similar). 
• AI Tooling: Hands-on experience with OpenAI API, LangChain, or automation frameworks (e.g., Zapier, Make, Vercel Functions). 
• Database & Infra: Familiar with Firebase, Supabase, PostgreSQL, and cloud deployment (Vercel, AWS, or GCP). 
• Version Control: Proficient with Git, GitHub, and CI/CD pipelines. 
• AI-Native Mindset: Uses GPT-5, Copilot, or Cursor IDE to accelerate coding and problem-solving. 
• Creative & Analytical: Understands design systems and marketing context; writes clean code with clarity and structure. 
• Mindset: Ownership, precision, and curiosity — you build like a founder, not a freelancer. 
 

Benefits & Perks 

• 21 Days Paid Holiday – Take time to recharge. 
• Paid Sick Leave – Health first, always. 
• Ongoing Education & Training – We’ll fund courses in AI development and automation that make you better. 
• Access to Cutting-Edge Tools – AI platforms, automation suites, and premium data tools to work smarter. 
• Creative Freedom & Responsibility – You have autonomy to build, experiment, and ship ideas fast. 

Our Culture: High-Performance, Low-Drama 

• Team-Oriented Wins: We succeed together; we fix problems, not blame people. 
• Creative Agility: Ideas are tested, not theorized. Data leads, creativity amplifies. 
• Remote but Connected: Structured communication and strong processes keep our team tight across borders. 
• Constant Improvement: Feedback is how we grow — individually and as a company. 

If you love building with AI, believe speed and quality can coexist, and want to code for impact rather than bureaucracy, you’ll fit right in at MX2.

 

Company Overview

BeomyTech is a dynamic technology company based in Israel, focused on the development of innovative solutions. Our projects require rapid prototyping, a high degree of flexibility in adopting new technologies, and the integration of artificial intelligence throughout the software development lifecycle.
 

Role Overview

We are seeking an experienced Full-Stack Engineer to work on end-to-end product development in an English-speaking team. The role involves building modern web applications and contributing to advanced AI-driven systems.

Technology Stack

• Frontend: Next.js, React, TypeScript
• Backend: Node.js, PostgreSQL, Drizzle ORM

• AI: LangChain, LangGraph, RAG, AI agents, vector databases

   

Requirements

• 5+ years of experience in full-stack product development
• Strong expertise in modern web technologies and backend systems
• Excellent English
• Proven experience working in an English-speaking team
• Ability to learn quickly, work autonomously, and maintain a high level of attention to detail

We are looking for a Senior Full-Stack Engineer to join a fast-growing product team working on a modern platform at the intersection of cybersecurity and AI.

This is a backend-focused full-stack role with strong ownership of features—from architectural decisions to production delivery. You will work in a startup environment where speed, autonomy, and engineering quality are equally important.
The product is already backed by significant investment and is entering an active growth stage.

This role is especially interesting because you will:
- work on a product at the intersection of AI and cybersecurity
- have high ownership and direct impact on product development
- contribute to complex, production-grade systems
- work with a modern tech stack in an engineering-driven environment
- influence architecture and technical decisions

     Benefits:

• Work on a cutting-edge product in the cybersecurity and AI domain
• High-impact role with real ownership over features and architecture
• Access to Udemy learning platform
• Flexible working schedule
• Remote-first collaboration

• Possibility of reservation (for Ukrainian specialists)

   

  Requirements:

• 6+ years of experience in software engineering
• Strong experience with Node.js and TypeScript
• Solid experience with React
• Experience building scalable backend systems and APIs
• Strong understanding of software architecture and system design
• Experience working with SQL databases (PostgreSQL preferred)
• Experience with complex CRUD workflows and data modeling
• Experience with complex CRUD workflows and data modeling
• Strong ownership and ability to drive features independently
• Nice to have:
• Experience with Python
• Experience with Fastify or NestJS
• Familiarity with Drizzle ORM
• Experience with Playwright and/or Jest
• Experience with cloud platforms (AWS / GCP)
• Experience with CI/CD pipelines (GitHub Actions, etc.)
• Docker / Kubernetes experience
• Background or interest in cybersecurity

Responsibilities:

• Own features end-to-end (backend-leaning full-stack)
• Develop and maintain APIs and backend services using Node.js
• Work with React on UI-related parts when needed
• Work with React on UI-related parts when needed
• Implement and optimize CRUD flows and database interactions
• Work with PostgreSQL, including schema design and migrations
• Contribute to AI-related integrations and features
• Ensure production readiness: debugging, monitoring, performance optimization
• Collaborate closely with engineers, team leads, and product managers
• Participate in code reviews and mentor other developers
   

About client:

An AI security and governance platform that protects enterprise data when staff interact with large language models and copilots. It offers need‑to‑know access control, an AI firewall with data loss prevention, and continuous monitoring to reduce the risk of sensitive information exposure through AI tools. The product also supports pre‑deployment “readiness” assessments and simulation to help organizations safely roll out AI assistants at scale.
 

About project:

An AI security platform that prevents data leakage in enterprise LLM and copilot usage. We build backend systems enforcing need-to-know access controls, AI firewalls, and real-time monitoring for production-scale deployments.

ABOUT JUPERRA

Juperra is a US healthcare marketplace connecting licensed caregivers — RNs, LPNs, CNAs — with families for in-home care.

We are a mobile-first, dual-sided platform with native Flutter apps (iOS + Android) for both caregivers and clients, featuring real-time booking, AI-powered matching, Socket.IO chat, Stripe payments, clinical documentation, and a full credentialing and background check pipeline.

We are a Delaware C-Corporation with a live production codebase and active integrations with Stripe, Twilio, Checkr, Persona, Nursys, Verisys, Sentry, and Thimble. The platform is already in active development with a working system and ongoing improvements.

Soft launch Q2 2026. Scaling through Q3 and beyond.

We are not looking for a contractor. We are looking for a builder.

THE OPPORTUNITY

This is a ground-floor role at a company solving a real problem in a $300B+ home care industry.

You will work directly with the Founder & CEO, own the full technical stack, and grow with the platform from launch through scale. The right person will not just write code — they will shape the product, influence architecture decisions, and become a core part of what Juperra becomes.

If you are talented, hungry, and looking to do the best work of your career on something that matters — this is it.

TECH STACK

Backend: Node.js / Express, PostgreSQL, MongoDB, Redis, Socket.IO, Firebase Auth + FCM

Mobile: Flutter / Dart — two apps (Caregiver app + Client/Connect app)

Cloud: AWS

Integrations: Stripe Connect, Twilio, Checkr, Persona, Nursys, Verisys, Sentry, Thimble

Admin Panel: Next.js / React

RESPONSIBILITIES

Own and extend the Node.js backend — REST APIs, real-time features, payment flows, credentialing and verification integrations

Build and improve Flutter features across both mobile apps

Integrate new third-party APIs as the platform grows

Maintain security best practices, write documentation, ensure code quality

Work directly with the CEO — fast decisions, no bureaucracy, real ownership

REQUIREMENTS

4+ years of full stack development experience

Strong Node.js / Express — REST API design, PostgreSQL, authentication flows

Flutter / Dart — production mobile apps on iOS + Android

Experience integrating third-party APIs (payments, verification, messaging)

Strong written English — clear async communication is essential

Available for at least 4 hours of US Eastern timezone overlap daily

NICE TO HAVE

Healthcare, HIPAA, or marketplace platform experience

Stripe Connect / payment escrow

Socket.IO real-time features

Gig economy or two-sided marketplace background

AWS deployment and DevOps experience

COMPENSATION

Compensation will be discussed based on experience and timing of engagement.

We are open to different structures (monthly, milestone-based, or long-term role) depending on the stage and the right candidate.

This is a long-term opportunity with strong growth potential as the platform scales.

WHAT WE OFFER

Ground-floor access to a platform being built to scale nationally

Direct collaboration with the Founder & CEO

High ownership and real impact on product and architecture

Long-term role — we are building a team, not hiring for a short project

The opportunity to build something people will truly depend on

HOW TO APPLY

Send your profile, GitHub, or portfolio links.

In a few sentences, tell us about your experience with Node.js and Flutter, and why this opportunity interests you.

We will conduct a technical interview followed by a paid test task before making an offer.

Project Description:

Project is a web application running and visualizing scientific experiments and mathematical models. It focuses on allowing users to visualize different graphical plots - hence Plotly is in the center of work.

Responsibilities:

The purpose of this role is to design, build, and maintain robust, scalable, and production ready software. As a senior full stack developer, the role leads the development of backend services in Python and frontend interfaces in React according to UI/UX specifications, ensuring high reliability, strong engineering standards, and a seamless user experience. It also delivers high quality components across the stack, efficient CI/CD pipelines, resilient production deployments, and contributes to architectural decisions, continuous performance improvements, maintainability, usability, and clear technical documentation that strengthens overall platform robustness and team productivity.

Mandatory Skills Description:

• The person must work with minimum supervision, probably with at least 5 years of experience.
• Strong backend engineering in Python (API development, services, data workflows)
• Frontend development expertise in React (components, state management, UI integration)
• Solid experience with CI/CD pipelines
• Solid experience in Linux command line
• Proven track record operating and supporting production systems
• Familiarity with AI augmented solutions, including RAG pipelines or multi agent architectures.
• Strong testing practices and software engineering fundamentals
• Ability to collaborate on architecture, code reviews, and cross functional technical decisions

Nice-to-Have Skills Description:

• Knowledge of OpenShift
• Experience with AI tools (Lang chain, Lang graph, vector-databases, etc. )
• Experience with document search applications

Languages:

English: B2 Upper Intermediate

Softwarium develops software for customers in the United States, Canada, and Norway across industries such as education, healthcare, energy, and security.
 

We’re looking for a Full Stack Engineer who doesn’t just deliver tasks, but takes ownership, works confidently with existing systems, and helps improve the product over time. This is a long-term product, not a short-term delivery — you’ll be involved in building, maintaining, and evolving it together with the team for our US Client.

Team: PM, 2 QA, 1 Devops, 11 Developers, Architect
Tech Stack: TS, React, Next.js, Vue.js, Nuxt.js, Node.js, Fastify, Azure Functions/AWS Lambda, GraphQL, Swagger, Docker, Playwright, CI/CD, SQL, and NoSQL.

Responsibilities:

• Develop and maintain full-stack features for a marketplace application using React, Next.js, and Node.js (TypeScript);
• Support and enhance existing frontend applications, ensuring performance, scalability, and maintainability;
• Design, implement, and maintain backend services using Azure Functions within a microservices architecture;
• Work with containerized applications, including maintaining and supporting existing Vue/Nuxt-based services;
• Handle request processing within containerized environments, including data flow management and caching strategies (e.g., Redis);
• Design and integrate APIs using REST and GraphQL, with proper documentation via Swagger/OpenAPI;
• Implement and maintain unit tests, and contribute to overall test coverage and quality;
• Collaborate with engineers through daily code reviews, providing and receiving constructive technical feedback;
• Ensure reliability and performance through proper logging, monitoring, and debugging of production issues;
• Work with existing systems, performing safe refactoring and maintaining backward compatibility;
• Collaborate with DevOps-managed infrastructure, ensuring smooth integration and deployment of services;
• Contribute to the continuous improvement of code quality, architecture, and development processes;
• Take ownership of features end-to-end, including development, support, debugging, and ongoing enhancements.
   

Requirements

• 4+ years of commercial experience in software development;
• Strong hands-on experience with TypeScript;
• Solid experience with React (Vue.js as a plus);
• Experience with SSR frameworks (Next.js and Nuxt.js);
• Experience building backend services with Node.js (TypeScript);
• Good understanding of API development (REST, GraphQL, Swagger, or OpenAPI);
• Experience working with microservice architecture;
• Hands-on experience with Azure Cloud (including Azure Functions, Event Grid, SQS); AWS background is also acceptable;
• Experience working with containerized applications (Docker);
• Familiarity with CI/CD pipelines;
• Understanding of authentication & authorization (OAuth2, tokens, cookies);
• Basic knowledge of caching and performance optimization;
• Experience with relational and NoSQL databases;
• Ability to write unit tests for own code;
• Experience with integration tests and working knowledge of Playwright E2E testing;
• Understanding of clean code principles (SOLID, maintainability);
• Experience working in a team: code reviews, collaboration, ownership;
• Comfortable using AI-assisted tools, with strong judgment to review, refine, and ensure code quality.
   

Nice to Have

• Experience with Fastify;
• Familiarity with the Azure ecosystem (Service Bus, etc.);
• Experience with Cosmos DB / DynamoDB;
• Basic understanding of system resilience patterns;
• Experience working with .NET / C# environments;
  
   

Working conditions:

✍️ B2B contract;

⚖️ Long-term cooperation;

🏠 Possibility to work remotely or in the office (Kyiv);

🚀 Learning & Development program: a team of senior developers, individual budget for professional development (trainings and events, certification);

💶 You can always count on paid vacation (20 working days), sick leave (5 paid days), and holidays.

Project Description
The project is a web application designed to run and visualize scientific experiments and mathematical models. A key focus is enabling users to create and interact with graphical plots, with Plotly as a central technology.

Responsibilities

• Design, build, and maintain robust, scalable, and production-ready software
• Lead development of backend services in Python
• Develop frontend interfaces in React according to UI/UX specifications
• Ensure high reliability, strong engineering standards, and seamless user experience
• Deliver high-quality components across the full stack
• Build and maintain efficient CI/CD pipelines
• Support resilient production deployments
• Contribute to architectural decisions and system design
• Drive continuous improvements in performance, maintainability, and usability
• Maintain clear and structured technical documentation

Mandatory Skills

• 5+ years of professional experience with ability to work independently
• Strong backend engineering experience in Python (APIs, services, data workflows)
• Frontend expertise in React (components, state management, UI integration)
• Solid experience with CI/CD pipelines
• Strong Linux command-line skills
• Proven experience supporting and operating production systems
• Familiarity with AI-augmented solutions (RAG pipelines, multi-agent architectures)
• Strong testing practices and software engineering fundamentals
• Ability to collaborate on architecture, code reviews, and cross-functional decisions

Nice-to-Have Skills

• Knowledge of OpenShift
• Experience with AI tools (LangChain, LangGraph, vector databases, etc.)
• Experience with document search applications

Languages

• English: B2 (Upper Intermediate)**

Project Description
The Carbon Capture Platform supports verification and management of CO₂ sequestration data from Carbon Capture and Storage operations. The system processes operational monitoring data, generates verifiable records, and enables creation of digital tokens representing stored CO₂.

At the initial stage, the team will analyze the existing platform, including architecture review, codebase assessment, and identification of technical issues, gaps, and risks.
Based on this, the team will address issues, improve stability and scalability, and implement enhancements. The scope also includes development of new features and onboarding of new customers, including integration with external systems such as SCADA.

The overall goal is to ensure reliable platform operation, support further development, and enable efficient integration of new users and data sources.

Responsibilities

• Analyze existing React-based UI and Node.js backend to identify performance, architectural, and integration issues
• Refactor and improve UI components and backend services to meet updated requirements and ensure scalability
• Implement new end-to-end features and enhancements based on customer needs
• Maintain and extend both client-facing interfaces and server-side logic for administrators, customers, and auditors
• Design and develop backend REST APIs and integrate them with frontend components and blockchain services
• Troubleshoot system and UI issues reported by users
• Participate in validation of workflows related to onboarding, reporting, and token management

Mandatory Skills

• 5+ years of full-stack development experience
• Strong experience with Node.js, React, and modern JavaScript/TypeScript
• Experience building data-driven web applications (from database to UI)
• Experience designing, building, and integrating REST APIs

Nice-to-Have Skills

• Experience building dashboards or operational interfaces
• Experience with blockchain wallets or Web3 libraries
• Familiarity with enterprise UI frameworks
• Experience working with complex data visualization
• Familiarity with enterprise architecture and AWS cloud

Languages

• English: B2 (Upper Intermediate)