Jobs Fullstack

The company shapes the future of autonomous AI agents for developers. Work with AI engineers to build tools that enhance coding workflows, automate tasks, and boost productivity.

Why join us?

Be a part of the next AI-powered development tools redefining software engineering. Collaborate with top-tier engineers and AI specialists. Solve complex challenges in a fast-paced, growing company. Enjoy a fun work environment and exciting opportunities as we rapidly expand. Gain exposure to cutting-edge tech while we expand weekly.

• Be a part of the next AI-powered development tools redefining software engineering.
• Collaborate with top-tier engineers and AI specialists.
• Solve complex challenges in a fast-paced, growing company.
• Enjoy a fun work environment and exciting opportunities as we rapidly expand.
• Gain exposure to cutting-edge tech while we expand weekly.

Responsibilities:

You’ll play a key role in designing and developing software, balancing backend and frontend development. Responsibilities include architecting scalable backend services, optimizing cloud-based solutions, and building interactive UI components and IDE plugins. Solve challenges like parsing large codebases, integrating AI assistants, and optimizing performance.

Requirements:

• 8+ years of full-stack engineering experience, with Strong backend and Strong frontend skills.
• Tech lead with at least 1 year of experience. 
• Experience with Redis and PostgreSQL
• Deep expertise in React, TypeScript, and modern Frontend and Backend architectures.
• Deep Experience with NodeJS
• Experience with AWS 
• Experience with AI-powered dev tools in day-to-day workflow.
• Experience working with CI/CD pipelines, automated testing, and modern development workflows.
• Experience with Infrastructure as Code (IAC) tools such as Terraform or Pulumi.
• Experience  in building interactive UI components and IDE plugins
• B2+ English Level 

About the job

The project is building one of the most complex online platforms in global e-commerce - a mission-critical system that processes millions of transactions annually for some of the world’s biggest brands. Our platform combines advanced algorithms, AI-driven decision-making, and distributed architectures across a broad spectrum of modern technologies.

We’re looking for a motivated Junior Full-Stack Engineer with commercial experience to join our R&D team. This is a great opportunity to grow your skills while contributing directly to a real-time, high-scale production system and learning from experienced engineers.

Responsibilities:

• Develop new features and maintain existing code across the backend and frontend parts of the system;
• Write clean, maintainable, and performance-driven code with guidance from senior engineers;
• Ensure code quality through unit and integration testing;
• Collaborate closely with developers, product managers, and designers to deliver product value;
• Continuously learn and improve your skills in building scalable backend services and user-facing applications;
• All of the above with the help of AI instruments provided by the company.

Requirements:

• 1+ years of commercial experience in backend development with Node.js (Typescript);
• Some hands-on experience with modern frontend frameworks (React will be a big plus, Angular, Vue, or similar);
• Understanding of databases and APIs;
• Eagerness to learn, collaborate, and grow in a team environment;
• Strong problem-solving skills and attention to detail;

Nice to have:

• Experience with Ruby on Rails;
• Experience with distributed systems or microservices environments;
• Exposure to messaging/event-driven architectures (Kafka, RabbitMQ);
• Familiarity with version control systems like Git;
• Interest in improving coding practices and learning new technologies.

Summary

Seeking a skilled developer to build and maintain a premium hedge fund intelligence platform.

• You'll combine Python/PostgreSQL ETL pipelines, REST APIs, AI tools (LLMs for data summarization & querying), and custom WordPress features to deliver interactive investor letters, reports, grids, and subscriber content for institutional-grade insights at retail prices.
• Several hours US Timezone (EST) Overlap
• Full-time or Part-time (30-40 hours/week)

About Project

A specialized online platform that serves as an institutional investor intelligence service focused on hedge funds, value investing, and related alternative investments. It provides "institutional-level" data and insights at more accessible (retail-friendly) prices.

Key Features and Content

• Investor Letters:
• Conferences & Events: Reports and notes from hedge fund conferences 
• Hidden Value Stocks: Quarterly newsletter/issues analyzing stock picks from top managers.
• News & Profiles: Articles on hedge fund strategies, emerging managers, activist investing, 13F filings, short-selling, and interviews
• Subscription Model: Paid membership for premium/ad-free access, exclusive insights, older archives, and deeper studies; free tier for some content.

Your Role

Build & maintain a premium investment intelligence platform (hedge fund data, letters, reports) using WordPress frontend + AI/data backend.

You will be the key technical builder and maintainer of the investment intelligence platform, combining backend data pipelines with a WordPress frontend. This hybrid role covers some data engineering, AI integration, and web development to deliver institutional-grade hedge fund/value investing insights to a growing subscriber audience. 

Responsibilities

• Audit and optimize WordPress and infrastructure for performance, security, and caching; handle subscriber access. 
• Build ETL pipelines for large financial data import/transformation (PostgreSQL, Python/Pandas/Airflow)
• Create REST APIs to serve data for dynamic tables, grids, and reports
• Develop WordPress custom plugins/themes/blocks for interactive data displays & subscriber features.
• Automate data workflows & iterate on user-facing features

Requirements

• 3+ years dev experience (full-stack or backend-heavy)
• Solid WordPress (custom plugins, REST API, optimization)
• Strong Python (ETL, APIs: FastAPI) + SQL (PostgreSQL)
• AWS Cloud Infrastructure, Serverless, Lambda. 
• JavaScript + frontend libs for tables/grids (DataTables/Chart.js)
• Hands-on AI integration (LLMs, prompt engineering, summarization/NLP)
• B2/C1 English with several hours of overlap with North America (EST).  
• Bonus: Financial data experience, Docker/cloud, hedge fund knowledge

Role Overview 

We are looking for a skilled Fullstack Developer to join our distributed team. You will be responsible for developing modern web applications using Next.js, React, and managing data via PostgreSQL and Microsoft SQL Server. 

Key Responsibilities 

- Build responsive UI components using ReactJS and Next.js App Router - Develop and maintain server-side functionality (e.g. API routes or server actions) 

- Design efficient schemas and write optimized queries in PostgreSQL and MSSQL 

- Collaborate with team members to ensure high-quality, timely delivery

- Follow best practices for performance, testing, and code quality 

Requirements - Must-Have 

- 5+ years of fullstack development experience 

- Strong knowledge of ReactJS and Next.js (App Router, SSR, API routes) - Experience with PostgreSQL and/or Microsoft SQL Server 

- Experience with ASP.NET (C#) 

- Familiarity with Git and modern CI/CD workflows 

- English proficiency (intermediate or above, spoken and written) 

Requirements - Nice-to-Have 

- Familiarity with RabbitMQ or similar messaging systems 

- Exposure to Docker or cloud platforms (e.g. Azure, AWS) 

- Testing experience (unit, integration - e.g., Jest, xUnit)

What We Offer 

- Fully remote work with flexible hours 

- Stable long-term opportunity with a friendly, global team 

- Exciting cloud-based projects using modern tech 

- Room for professional growth and learning

We're looking for a Middle+ Fullstack Developer - Next.js | React | React Query | NestJS | PostgreSQL
 

About us:
 

LenGreo is a full-cycle digital marketing & development company.

We’re building a modern social-media-driven platform — a creator–fan ecosystem where users publish content and fans can financially support creators.
 

The product is performance-oriented, scalable, and built with clean architecture principles.
 

You’ll join an experienced cross-functional team including a Technical Lead, Backend Developers, Business Analyst, Designer, and Project Manager.
 

Role Overview:

• Middle+ Fullstack Developer with strong frontend focus
• Confident across the full stack
• Product-oriented ownership mindset
• End-to-end feature delivery
• UI → API → data layer involvement

Responsibilities:

• Build and scale frontend features with Next.js and React
• Manage server state using React Query
• Implement UI from Figma and design system
• Develop feeds, profiles, messaging, notifications, and content interactions
• Contribute to backend features using NestJS
• Work with PostgreSQL queries and schema updates
• Design and integrate REST APIs
• Participate in architecture and technical planning
• Write clean and maintainable code
• Improve performance and UX across the product
• Join code reviews and follow engineering standards

Required Experience:

• Commercial React and Next.js experience
• Strong JavaScript and TypeScript knowledge
• Production-grade web application experience
• NestJS or similar Node.js framework experience
• PostgreSQL and relational database knowledge
• REST API design and consumption experience
• Frontend performance and scalability understanding
• Team workflow and Git experience

Nice To Have:

• Experience with social or content platforms
• Real-time features (WebSockets)
• Messaging or feed-based interfaces
• Payment integrations
• Contributions to scalable system architecture

Engagement Format:

• Remote
• Full-time
• Long-term collaboration
• Product-focused environment

On behalf of our client, we are looking for a Lead Full Stack Flutter Developer.

Responsibilities:

- Architect and build Flutter mobile applications (iOS & Android)

- Develop and maintain a responsive Flutter Web application

- Design and implement scalable frontend architecture

- Integrate backend APIs and AI-driven endpoints

- Build and maintain backend services (Node.js or similar)

- Design and implement REST or GraphQL APIs

- Architect database schemas (PostgreSQL preferred) for analytics-heavy workloads

- Develop and maintain ETL pipelines (data imports, cleanup, normalization, validation)

- Handle legacy data migration and ensure data integrity

- Integrate AI/LLM solutions (e.g., OpenAI) into production workflows

- Implement AI-driven analytics, scoring, summarization, or recommendation systems

- Ensure performance optimization across devices and services

- Implement secure authentication and production-ready deployment

- Deploy and manage cloud infrastructure (AWS, GCP, or Azure)

- Provide technical leadership and contribute to architectural decisions

- Participate in project coordination and technical planning

Requirements:

- 5+ years of overall software development experience

- 3+ years of hands-on experience with Flutter (mobile & web)

- 2+ years of backend development experience (Node.js or similar)

- Proven experience in a Lead role (technical ownership, architecture decisions)

- Strong experience with relational databases (PostgreSQL preferred)

- Experience building ETL pipelines and data transformation workflows

- Experience working with analytics-heavy applications

- Hands-on experience integrating AI/LLMs into production systems

- Understanding of model performance monitoring

- Cloud infrastructure and DevOps familiarity

- Production app release experience

- Performance optimization expertise

- Experience with subscription/payment integrations

- Project management experience

- Upper - Intermediate or higher level of English

Company offers:

- Long-term employment with possibilities for professional growth

- Fully remote work

- Reasonably flexible schedule

- 15 days of paid vacation

- Regular performance reviews

N-iX is looking for a Senior Full-stack (Python + Go) Engineer to join a collaborative product team of around 8 engineers working on a complex, high-impact software platform. You’ll contribute across the stack, building scalable backend services and intuitive frontend experiences, while actively using AI-powered development tools to improve productivity and code quality. The team follows Agile best practices, values clean architecture, ownership, and continuous improvement As an engineer you’ll help to develop the platform that serves as an enterprise next-generation endpoint protection (EPP) + endpoint detection & response (EDR) solution that runs on Windows (as well as macOS, Linux, servers, etc.). It comes as a single, unified agent designed to prevent, detect, respond, and remediate cyber threats, including malware, ransomware, fileless attacks, and advanced persistent threats — all in real time.

Responsibilities:

• Design, develop, and maintain backend services in Python and Golang.
• Collaborate closely with backend, frontend, and QA engineers in an Agile/Scrum environment.
• Write clean, testable, and well-documented code.
• Integrate and work with APIs, data stores, and third-party services.
• Use AI-assisted development tools (e.g., code assistants, testing tools, analysis tools) to improve delivery speed and quality.

• Support production systems and participate in troubleshooting when needed.

   

Requirements:

• 5+ years of experience in Software Engineering.
• Strong expertise with Python and Golang .
• Experience building full-stack applications end-to-end.
• Good understanding of RESTful APIs and client-server architecture.
• Familiarity with Agile development methodologies.
• Experience working in a team environment with shared ownership.
• Comfortable using AI tools in daily development (e.g., coding assistants, test generation, debugging, documentation support).
• Experience with AWS and GCP clouds.
• Experience with Kafka ecosystem & Redis, PostgreSQL.

Project Overview

We are seeking a Senior Software Engineer to join our HealthTech product teams building SaaS solutions for the US pharmaceutical market, including Patient Onboarding, REMS Administration, and Wholesale Distribution.
‍
This role consists of two sequential phases:
‍
Phase 1 (approx. 2-3 months) - Data Processing Platform. 
You will work on a Python-based data processing platform handling pharmaceutical transaction pipelines: SFTP file ingestion, EDI 270/271 transaction processing, business rule execution, and client-specific file output generation. The work focuses on adapting existing services to new client requirements.
‍
Phase 2 - Full-Stack Healthcare Platform. 
You will transition to a full-stack healthcare platform built with React, NestJS, Prisma, and an Nx monorepo on Microsoft Azure. This is a long-term engagement covering patient and provider portals, case management, and clinical data integration.
‍
You will work closely with US-based stakeholders, so excellent English and strong communication skills are essential. 
We highly value engineers who stay on top of modern development trends and use tools like Cursor, Claude Code, VS Code with Copilot, and other AI-enhanced environments.

Technical Details
 

Phase 1 - Data Processing Platform:
Language: Python 3.11+
Compute: Azure Functions (Python)
Data: PostgreSQL, SQLModel (SQLAlchemy), Pydantic, Alembic
Messaging: Azure Service Bus Infrastructure Azure Blob Storage, Key Vault, Terraform
UI: Streamlit (admin dashboards)
Testing: Pytest
Code Quality: Ruff, Pyright (strict mode)
‍

Phase 2 - Full-Stack Healthcare Platform:
Front-End: React, TypeScript, Tailwind CSS, shadcn/ui, Radix UI, Vite, Nx
State & Data:  Redux Toolkit, TanStack React Query, React Hook Form, Zod
Back-End: NestJS, TypeScript, Prisma ORM, PostgreSQL, Redis, Bull
Auth: Microsoft Entra External ID, FHIR SMART, Permify (RBAC + ReBAC + ABAC)
Healthcare: HAPI FHIR Server (R4)
Case Management: Flowable
Azure Services: App Services, Container Apps, Functions, APIM, Service Bus, Blob Storage, Communication Services
Testing:  Vitest, Jest, Playwright
‍
We follow the principle of right tools in the right places - our stack is broad because each technology serves a specific purpose in the platform.

Responsibilities
 

Phase 1 - Data Processing Platform:

• Extend and adapt data processing pipelines for new client integrations
• Implement business rules for EDI 270/271 transactions and file transformations
• Write clean, strictly-typed Python with Pydantic models and comprehensive test coverage
• Work with Azure Functions, Service Bus, and Blob Storage
• Maintain high pipeline performance
   

Phase 2 - Full-Stack Healthcare Platform:

• Build and maintain features across the React front-end and NestJS APIs within the Nx monorepo
• Take ownership of assigned system components, making architectural decisions within their scope
• Collaborate with other component owners to ensure consistency and alignment across the platform
• Design and optimize PostgreSQL schemas, manage migrations, and ensure data integrity
• Integrate Azure services as needed for your components (App Services, Container Apps, Functions, APIM, Key Vault)
• Write unit and integration tests, participate in code reviews, and maintain CI quality gates
• Drive the technical roadmap for your areas of responsibility
• Present solutions directly to clients and participate in architectural discussions
  
  Qualifications
• 5+ years of experience with TypeScript in production environments
• 2+ years of experience leading architecture or major features
• Working proficiency in Python; comfortable contributing to Python codebases with Pydantic and SQLAlchemy
• Deep expertise in REST APIs, database design, microservice design, and event-driven architecture
• Experience with Nx monorepo structures
• Familiarity with Azure cloud services and multi-environment deployments
• Experience with GitHub Actions and CI/CD pipelines
• Fluency in English and ability to lead client demos and team knowledge sharing
• Deep understanding of modern authorization mechanisms

• Active use of AI-assisted development tools (Cursor, Claude Code, Copilot, or similar)

   

  Nice to Have:

• Authentication via Microsoft Entra External ID
• FHIR R4 or HL7 healthcare data exchange standards
• EDI (Electronic Data Interchange) or healthcare/pharma domain knowledge
• Familiarity with HIPAA / SOC 2 compliance
• Experience with BPM / workflow engines (Flowable or similar)
• Hands-on experience with Microsoft Azure services
  
  Our benefits:
• No micromanagement
• Freedom to engage in decision-making and implementation
• Ability to work in a team of professionals (the ratio of middle and above specialists 80/20)
• Participation in the development of high-quality products
• Direct communication with clients on a partnership level
• Professional development opportunities ($600 education budget, well-managed processes, communities, internal library)
• Health insurance
• $600 extra for health care, sports, or mental health
• Accounting services
• 20 paid working days off and 10 days sick leave
• Opportunity to work remotely
• Soulful team buildings and corporate events
   

Join us and be among those who care!

We are looking for a Senior Full-Stack Engineer (AI-Native) with proven experience in AI-driven application development, someone who can take a product from idea to production release using modern AI tools for coding and iteration, and who thrives in the emerging “vibe coding” paradigm.

This role is not about simply using AI assistants; it requires an engineer who understands how to orchestrate AI as part of the engineering workflow, accelerating development, validating ideas rapidly, and transforming experimental prototypes into reliable, production-grade systems.

You will join a US-based bioinformatics startup building a platform for genetic medicine. The company uses Antisense Oligonucleotide (ASO) technology and AI to identify therapeutic targets and design treatments much faster, with the goal of treating genetic diseases with the urgency patients, especially children, need.

About project:

The company is building a next-generation platform for designing genetic therapies by combining AI with ASO technology to dramatically shorten the path from biological insight to viable treatment design.
You will operate in an environment where: early research prototypes already exist, rapid iteration is essential, engineering plays a critical role in converting experimental work into scalable internal platforms, speed and scientific impact matter more than rigid process.

Important When Applying:
If you are interested in this position, please include a short description of your commercial experience building products or MVPs using AI tools from scratch through delivery, specifying: the problem you solved and the AI tools and models you used.

Key Qualifications:
● 6+ years of commercial experience as a Full-Stack Software Engineer.
● Demonstrated experience building products or MVPs end-to-end using AI-assisted development tools.
● Proven track record as an AI-native engineer who effectively leverages modern LLM ecosystems (e.g., Google AI Studio, Gemini, Cursor, Copilot, or similar) for: rapid implementation and iteration, code generation and refinement, testing, debugging, and documentation acceleration, workflow automation.
● Hands-on experience working in a vibe coding environment, including: turning ambiguous ideas into working prototypes quickly, making pragmatic engineering trade-offs, and evolving experimental code into maintainable production systems.
● Ability to work independently without a dedicated supervising architect, owning technical decisions and execution.
● Familiarity with cloud-native architectures.
● Experience with Python for data processing and AI integrations.
● Excellent English (spoken and written) — mandatory.

Preferred Qualifications:
● Degree or formal background in Bioinformatics, Computational Biology, or a related field.
● Understanding of molecular biology concepts such as: genetics, DNA/RNA, protein structures, RNA/protein folding.
● Experience working with bioinformatics datasets (genomics, transcriptomics, etc.).
● Experience building data pipelines for scientific or medical applications.

As a Full-stack AI-Native Engineer you will:
● Transform existing “vibe-coded” scripts and early-stage tools into robust, deployable applications capable of handling complex biological data.
● Take experimental solutions and operationalize them in production environments.
● Build and maintain applications using Google AI Studio (Gemini API) and Google Cloud Platform.
● Work with bioinformatics data (genomics, transcriptomics, ASO targeting) to power internal tools.
● Design and implement UI/UX, backend services, and supporting cloud infrastructure.
● AI-assisted development workflow: actively use tools like GitHub Copilot to accelerate implementation, refactoring, and testing while maintaining high engineering standards.
● Introduce the right level of architecture, observability, and CI/CD without over-engineering.
● Work directly with leadership and scientists to translate biological needs into functional digital products.

DBB Software — is a software engineering IT company from Ukraine with a unique point of difference. We provide an exciting concept involving highly trained and vetted remote software developers to provide businesses with everything they need in the information technology space. Whether it’s end-to-end IT or smaller, focused areas and individual projects, we cover it all, and our approach allows us to offer exceptionally competitive pricing. 

During 10 years on the IT market, we successfully released more than 30 projects and have a wide-geographic of clients in Europe, the USA, and Canada.

We’re building an AI-powered platform for internal services, including IT support, HR, finance approvals, and more. So we warmly invite Junior strong/Middle Full-stack Developer to join our team in Dnipro city!

What requirements are important for this role:

— Experience in back-end development with Node.js (or Python/ Go) and TypeScript;
— Understanding of asynchronous programming and event-driven systems;
— Experience with RESTful APIs and/or GraphQL;
— Experience with database technologies (SQL and/or NoSQL);
— Experience in writing unit, integration, and end-to-end tests;
— Understanding of CI/CD pipelines and cloud deployments (AWS, GCP, etc.);
— Experience with React (Hooks) and TypeScript;
 

What we are expecting from new teammate:

• Effective communication skills: Regularly achieve consensus with peers, and clear status updates;
• Positive and solution-oriented mindset;
• Strong sense of ownership, urgency, and drive;
• An inclination towards communication, inclusion, and visibility;
• Self-motivated and self-managing, with great organizational skills;
• English level at least Intermediate;
• Ability to work from office in Dnipro is requiered.
   

Working with our team is:

• Flexible schedule;
• Benefit package with paid vacations and sick leaves;
• Salary reviews on a regular basis;
• Autonomy in decision-making, no bureaucracy, and pressure;
• People-oriented culture and healthy atmosphere in the team;
• Whole support from company management;
• Office in Dnipro with whole BCP support: generators, power stations, and Starlink.

Workload: full-time
Start: asap
Duration: long-term
English: B2-C1

We would like to engage 1–2 senior engineers to support our product development.
All candidates must be fluent in English (written and spoken) and comfortable operating in an international, high-velocity startup environment.

Engagement options:

Option 1 – One Senior Full-Stack Engineer
We are looking for a highly experienced engineer capable of contributing across:
Mobile (iOS + Android)
Web
Backend
This person should be confident working end-to-end and comfortable owning features across the full stack.

Option 2 – Two Senior Engineers
One Senior Mobile Engineer (iOS and Android)
One Senior Full-Stack Engineer (Web + Backend or Mobile + Backend)

Required Experience:
Strong professional experience with iOS (SwiftUI)
Solid experience with React
Strong backend experience with Node.js
TypeScript
Postgres or MySQL

Nice to Have
CI/CD
Docker
Tailwind
Shadcn
Android (Jetpack Compose)

Job Description

• 6+ years of software development experience with the .NET platform (ASP.NET Core, C#)
• Strong experience building and consuming REST APIs (OpenAPI, FluentValidation)
• Knowledge of OAuth 2.0 flows is a plus
• At least 2+ year of proven experience with Azure Cloud services (Service Bus, Azure Functions, CosmosDB)
• Hands-on experience with front-end development in React (TypeScript, state management)
• Hands-on experience with adaptive design
• Solid understanding of client-server application design and asynchronous programming
• Experience with CI/CD pipelines in Azure DevOps or equivalent tools
• Knowledge of containerization (Docker, Kubernetes) is a strong plus
• Familiarity with low-code/no-code integrations (Power Apps, Power Automate) is desirable
• Experience with Azure ML/AI services, document recognition, or data-driven workflows is an advantage
• Proficiency in debugging, refactoring, and clean code design
• Strong analytical skills with ability to ramp up quickly in new domains
• Good written and verbal communication skills in English (Upper-Intermediate+)

Job Responsibilities

• Design and implement cloud-native applications leveraging Azure Functions, Service Bus, and CosmosDB
• Develop front-end applications in React, ensuring responsive UI and seamless integration with back-end services
• Build and maintain microservices and APIs that integrate with multiple systems, including D365 and data platforms
• Collaborate with stakeholders to define and negotiate API contracts and ensure reliable system integrations
• Implement data processing and workflow services with a focus on scalability, performance, and resilience
• Contribute to the design of low-code solutions integrating Azure ML/AI services for automation (e.g., document recognition, intelligent data extraction)
• Participate in planning, estimation, and architecture discussions, providing technical guidance
• Debug and resolve issues of various complexities across the stack
• Work closely with DevOps and QA to ensure CI/CD pipelines, automated testing, and deployment processes are efficient and robust
• Follow coding standards and contribute to continuous improvement initiatives within the development team

Department/Project Description

GlobalLogic is searching for a motivated, results-driven, and innovative software engineer to join our project team at a dynamic startup specializing in pet insurance. Our client is a leading global holding company that is dedicated to developing an advanced pet insurance claims clearing solution designed to expedite and simplify the veterinary invoice reimbursement process for pet owners.

You will be working on a cutting-edge system built from scratch, leveraging Azure cloud services and adopting a low-code paradigm. The project adheres to industry best practices in quality assurance and project management, aiming to deliver exceptional results.

We are looking for an engineer who thrives in collaborative, supportive environments and is passionate about making a meaningful impact on people's lives. If you are enthusiastic about building innovative solutions and contributing to a cause that matters, this role could be an excellent fit for you.

Intro

ITSUA is a web development agency that builds a wide range of sites and web applications for clients worldwide. We’re seeking a skilled, self-motivated developer who can adapt quickly to new contexts and work effectively both independently and within a small, cross-functional team.

General

• Commercial experience
• Deep understanding of how Internet and web apps work
• English: B2 level or higher
• Proven self-discipline: plan your day, meet deadlines, and switch context smoothly

Must-have (Backend: Symfony, DevOps)

• Commercial experience with Symfony framework, REST APIs
• Strong PHP and SQL fundamentals (joins, indexes, transactions)
• Authentication & Authorization (JWT, OAuth2)
• MySQL / PostgreSQL
• Confident Git usage
• Familiarity with Docker Compose, CI/CD, and Linux administration

Nice-to-have (Frontend)

• Frontend: React, Tailwind / Material UI
• Ability to design REST APIs from scratch (Open API, pagination, etc.)
• Deep understanding of React and Symfony frameworks internals

Why ITSUA

• We work in small cross-functional squads without micromanagement
• Friendly environment with mentorship, professional growth, and English lessons
• Competitive salary

CubeX company wants to extend the development team, that’s why we invite an experienced Full Stack JS Developer!

We are looking for a developer who is not afraid of responsibilities, always achieves excellent results and is ready to share their experience with the team!

You can find more info about us on our website: https://cubex-ua.com/

Requirements:

Working experience in a similar position from2+ year with:

JavaScript: TS, React, React Native, NodeJS (Express, Koa, Meteor, Sails)

At least 1 of them in perfect.

Excellent understanding of OOP and design patterns

Experience working with SQL, NoSQL databases

Code review experience

Experience with cloud API integrations (AWS, Azure, Google Cloud Platform, Payment Gateways, etc.)

The responsible approach to the fulfillment of the tasks

High level of self-organization, solid communication skills, ability to work in a team, ability to develop and help a team

Speaking English

Responsibilities:

Write clean code

Ensure fast and stable operation of interfaces

Interact with API and back-end

Develop, support projects, learn new technologies and apply them in practice

We offer:

Schedule: Mon-Fri from 9:00 to 18:00

Social package

Work on interesting projects in a professional team

Opportunity for professional growth

A lot of interesting working days with a friendly team and management

Convenient office location

Delicious coffee, tea and cookies

Salary will be calculated according to the results of the interviewv

ABOUT THE ROLE

We are looking for a highly experienced Senior Full Stack Lead Developer to take ownership of our flagship web-based Field Management Software platform. This is a hands-on technical leadership role: you will architect, build, and guide the evolution of a sophisticated single-page application (SPA) ecosystem backed by a robust .NET/C# Web API and SQL Server data layer. Roughly 80% of the application surface is built in JavaScript using our proprietary one-page app framework, making deep JavaScript expertise absolutely essential.

You will mentor junior and mid-level developers, drive code quality standards, own technical architecture decisions, and partner closely with product owners and stakeholders to deliver reliable, scalable solutions for field teams operating in demanding real-world environments.

WHAT YOU'LL DO

• Architect and lead development of our web-based Field Management SPA, ensuring performance, scalability, and maintainability across the full stack.
• Own the JavaScript front-end platform — our proprietary one-page application framework — driving design decisions, component standards, and API integration patterns.
• Design and implement RESTful Web APIs in ASP.NET / C# that power the front-end and integrate with third-party services.
• Write, optimize, and review complex T-SQL queries, stored procedures, and data models on SQL Server.
• Develop and maintain .NET Windows Services for background processing, scheduling, and system-level integration tasks.
• Establish and enforce coding standards, perform thorough code reviews, and champion engineering best practices across the team.
• Collaborate with product management, UX designers, and field operations stakeholders to translate requirements into technical solutions.
• Drive CI/CD pipeline improvements, deployment strategies, and DevOps practices.
• Identify, diagnose, and resolve complex performance bottlenecks and production issues.
• Mentor and grow junior and mid-level developers through pair programming, technical coaching, and knowledge sharing.

REQUIRED QUALIFICATIONS

• 8+ years of professional full stack software development experience.
• 3+ years in a technical lead, principal engineer, or software architect role.
• Expert-level JavaScript (ES6+) — deep understanding of async patterns, DOM, event loops, module systems, and SPA architecture.
• Strong proficiency in C# and .NET Framework / .NET Core for back-end Web API development.
• Solid hands-on experience with ASP.NET (MVC and/or Web API).
• Solid hands-on experience with SignalR or WebSockets for real-time data scenarios.
• Advanced T-SQL skills — query optimization, indexing strategies, stored procedures, and schema design on SQL Server.
• Experience building and maintaining .NET Windows Services.
• Proven ability to design RESTful APIs consumed by rich JavaScript clients.
• Demonstrated experience leading and mentoring engineering teams.
• Experience with source control (Git) and collaborative development workflows.

PREFERRED / NICE TO HAVE

• Experience with field service, workforce management, or operations software.
• Familiarity with modern JavaScript frameworks (React, Vue, Angular) alongside custom/proprietary SPA development.
• Experience with CSS architecture — responsive design, CSS pre-processors (LESS/SASS), and UI component libraries.
• Background in implementing offline-capable or mobile-first web applications for field use.
• Experience with automated testing frameworks for both front-end (Jest, Mocha) and back-end (.NET unit/integration testing).
• Prior work in industries such as utilities, construction, logistics, or facilities management.

CORE TECHNOLOGY STACK

JavaScript (ES6+) — Primary Language

C# / .NET Framework & .NET Core

ASP.NET Web API / MVC

T-SQL / Microsoft SQL Server

.NET Windows Services

CSS / Responsive Web Design

RESTful Web API Architecture

Custom SPA Framework (Proprietary)

Git Version Control

IIS / Windows Server

HOW TO APPLY

Submit your resume, a brief cover letter outlining your experience with large-scale JavaScript applications and .NET back-end systems, and any relevant portfolio links or GitHub profile. We review every application and will reach out to qualified candidates within two weeks.