Jobs Fullstack

We are looking for an experienced Senior Full Stack Developer with a strong backend focus, deep expertise in TypeScript and Node.js, solid hands-on experience with React, and practical experience building AI-powered applications.

The ideal candidate is a backend-oriented full-stack engineer who can design scalable backend systems, develop APIs and integrations, and contribute to frontend development using React.

Key Responsibilities

• Design, develop, and maintain scalable backend services using TypeScript and Node.js.
• Build and optimize REST APIs, business logic, and third-party integrations.
• Develop and maintain frontend features using React and TypeScript.
• Design reliable, secure, and maintainable application architectures.
• Integrate AI/LLM services such as OpenAI, Anthropic, or Azure OpenAI.
• Build AI-powered features, intelligent workflows, and backend integrations.
• Work with databases, asynchronous processing, and application performance optimization.
• Collaborate with the team on technical decisions, code reviews, and architecture improvements.
• Take ownership of features from design to production.
•  

Required Skills

• 5+ years of professional software development experience.
• Strong TypeScript and Node.js expertise, with a primary focus on backend development.
• Solid hands-on experience with React and modern frontend development.
• Strong experience designing and building backend APIs, services, and integrations.
• Practical experience with AI/LLM integrations (OpenAI, Anthropic, Azure OpenAI, or similar).
• Experience with SQL or NoSQL databases.
• Good understanding of asynchronous programming, authentication, scalability, and software architecture.
• Experience delivering production-ready full-stack applications.
• Ability to work independently and take ownership of technical solutions.
•  

Nice to Have

• Experience with Next.js.
• Experience with NestJS, Express, or Fastify.
• Knowledge of LangChain, Vercel AI SDK, or LlamaIndex.
• Experience with RAG, AI agents, embeddings, or vector databases.
• Familiarity with Python-based AI services.
• Experience with cloud platforms, Docker, and CI/CD pipelines.

Ideal Candidate

A senior full-stack engineer with a backend-first mindset, strong TypeScript/Node.js expertise, solid React experience, and proven experience integrating AI/LLM capabilities into real-world applications.

The role involves both backend and frontend development, with the primary focus on backend architecture, services, APIs, and AI integrations.

Project Details

• Location: 100% Remote
• Engagement: Full-time 
• Start: ASAP
• Duration: To be confirmed
• Interview Process: Fast-track

We are looking for a Mid-level Full-Stack Developer (3+ years of experience) to work on a modern web project using an up-to-date technology stack.

🧩 Responsibilities:

• Develop and maintain the backend using NestJS (Node.js)
• Work with MySQL databases via TypeORM
• Develop the frontend using Angular 21
• Integrate third-party services and APIs
• Write clean, maintainable, and scalable code
• Participate in code reviews and team-based development

• Work with Git (version control)

  
  🛠 Requirements:

• 3+ years of commercial experience in Full-Stack development
• Strong knowledge of TypeScript
• Experience with NestJS / Node.js
• Experience with TypeORM
• Hands-on experience with MySQL
• Experience developing with Angular (version 21 or a close equivalent)

• Confident use of Git

   

  ⭐ Nice to have:

• Experience working with the OpenAI API
• Experience using Docker
• Writing and maintaining automated tests with Playwright

🎯 We offer:

• Work on an interesting and technology-driven project
• A friendly team and comfortable communication
• Fully remote work format
• Competitive salary (depending on experience)

We are looking for an experienced Senior Full Stack Developer with strong expertise in TypeScript, Next.js, and React to design, build, and deliver modern AI-powered applications.

The ideal candidate combines hands-on full-stack development experience with practical knowledge of integrating Large Language Models (LLMs), AI agents, and generative AI capabilities into production applications.

Key Responsibilities

• Design, develop, and maintain scalable web applications using Next.js, React, and TypeScript.
• Build server-side functionality, APIs, and integrations using Next.js and the Node.js ecosystem.
• Integrate LLM providers such as OpenAI, Azure OpenAI, and Anthropic.
• Develop AI-powered product features, including conversational interfaces, intelligent workflows, and AI assistants.
• Implement AI streaming, structured outputs, and tool calling using frameworks such as Vercel AI SDK or LangChain.
• Collaborate on application architecture, performance, security, and production deployment.

• Work closely with product and engineering teams to deliver end-to-end solutions.

   

Required Skills

• Strong professional experience with TypeScript, React, and Next.js.
• Solid understanding of modern full-stack application architecture.
• Experience with server-side development, REST APIs, and third-party integrations.
• Strong knowledge of asynchronous programming, authentication, and application performance.
• Experience building and deploying production-grade applications.

• Ability to work independently and take ownership of technical solutions.

   

Nice to Have

• Hands-on experience with OpenAI, Azure OpenAI, or Anthropic APIs.
• Experience with Vercel AI SDK, LangChain, or LlamaIndex.
• Knowledge of RAG (Retrieval-Augmented Generation), embeddings, and vector databases.
• Experience developing AI agents and LLM-powered workflows.
• Familiarity with Python-based AI services.
• Experience with cloud platforms and CI/CD pipelines.

Ideal Candidate

A senior full-stack engineer who can independently deliver complete web applications using Next.js and TypeScript, with a strong interest in or proven experience building AI-powered products.

We are looking for a Middle C# .Net Fullstack Engineer to help our Client develop AI-powered applications for AI Governance, Enterprise Architecture, Business Architecture, IT Portfolio Management, Process Analysis and a Digital Twin of the Organization to provide a unified, real-time view of your enterprise operating model. 

You will be joining a department of 70+ engineers across multiple teams, each with ownership for specific domains within our flagship SaaS based enterprise architecture product. Application components are built to run natively in Microsoft Azure, across a tech stack utilizing C# .Net 8, React, Typescript, CosmosDB, SQL, Containers and Kubernetes, with a Micro-frontend and Microservice architecture, continuously deployed to a multiregional highly available infrastructure. Public REST APIs make our platform the hub for numerous integrations to external services and applications.

We operate Scrum for day-to-day development activities, wrapped with quarterly strategic planning to set the vision and goals for the coming quarter. We follow leading development practices, incorporating TDD, automated CI/CD, a “shift-left” testing mindset and a focus on producing S.O.L.I.D maintainable code that can be released quickly and to a high quality. 

Core Responsibilities:

• Collaborating with the Product Owner and the team to refine features, stories and acceptance criteria
• Working with C#, .Net Core in an Azure Microservice environment
• Developing and maintaining API Services
• Working with multiple React, Micro-frontend web applications
• Formulating solutions to technically challenging requirements
• Adhering to existing coding standards and practices, and working with other technical leads to continuously improve these
• Partaking in a culture of code reviewing and collaboration
• Attending team meetings such as daily stand-ups, retrospectives, planning, refinements, and technical discussions

• Partaking in presentations and code workshops

   

Essentia requirements:

• 3+ years of experience in C# .Net/Net Core 
• Experience with React
• SQL Server (T-SQL)
• Performance optimization 
• Azure native technologies (i.e. App Services, Functions etc.)
• Integration and Unit Test experience supporting regular production releases
• Strong understanding of object-oriented programming (OOP) and S.O.L.I.D principles
• Experience with Scrum and development in an agile environment
• Exposure to Micro-frontends and Microservices
• Experience with AI tools and their application in software development
• Experience of mentoring and guiding multi-discipline engineers

• Strong communication skills

   

Nice to have:

• Experience working on an existing production SaaS platform
• Confidence with Git and branching strategies, versioning, dependency management
• Domain Driven Design principles
• Working in an automated continuous delivery environment

• Containers, Kubernetes exposure

   

Client’s Tech Stack/Environment:

• Development for modern browsers
• .NET 6 / C#
• React, Typescript, HTML, SASS
• SQL Server (T-SQL), CosmosDB
• MSTEST v2, XUnit, Mock, NSubstitute, Jest, Selenium, Playwright
• Azure DevOps with Git, and CI/CD pipelines in YAML
• IAC (ARM, Helm, Terraform)
• Containers, Kubernetes
• Azure native technologies (i.e. App Services, Functions etc.)

Location: Europe, with occasional travel to Belgium.

On behalf of our Client from Belgium, Mobilunity is looking for Senior Full-stack Software Engineer.

Our client is developing an AI-powered SaaS platform designed to automate business processes and improve the operational efficiency of commercial teams. The platform leverages modern technologies to streamline workflows, reduce manual effort, and help businesses operate more effectively.

You will join a small, technically focused team, working on the development and evolution of the platform. This role offers a high degree of autonomy, direct involvement in technical decisions, and the opportunity to build scalable, AI-driven solutions.

Key Responsibilities:

• Design, develop, and maintain full-stack application features using Python, React, and TypeScript.
• Build and optimize backend services, REST APIs, and database integrations.
• Develop responsive, scalable, and maintainable frontend components.
• Integrate AI-powered functionality into the platform.
• Participate in architectural discussions and technical decision-making.
• Take ownership of features throughout the entire development lifecycle, from requirements to production.
• Collaborate closely with product stakeholders to translate business needs into technical solutions.
• Maintain high standards of code quality, performance, scalability, and reliability.

Requirements:

• Strong commercial experience in Python backend development.
• Solid hands-on experience with React and TypeScript.
• Practical experience with PostgreSQL and relational database design.
• Experience designing, developing, and integrating REST APIs.
• Ability to independently develop and deliver end-to-end full-stack features.
• Good understanding of software architecture, scalability, and maintainable code.
• Experience with modern development workflows, including Git and CI/CD practices.
• Strong problem-solving skills and a product-oriented mindset.
• Ability to work autonomously, take ownership of technical tasks, and deliver production-ready solutions.
• Adaptability and comfort working in a fast-moving startup environment.
• Good communication skills and English proficiency.

Nice to Have:

• Experience developing applications using LLMs and AI agents.
• Familiarity with AI frameworks such as LangGraph, Agno, or PydanticAI.
• Experience with FastAPI.
• Knowledge of vector databases, particularly PostgreSQL with pgvector.
• Experience with Google Cloud Platform (GCP).
• Familiarity with Terraform and Infrastructure as Code (IaC).
• Experience using AI-assisted development tools.
• Previous experience working on AI SaaS products or in early-stage startups.
• French or Dutch language skills.

Engagement: Full-time
Location: EU (mandatory)
English: Upper-Intermediate (B2)
Availability: Full-time
 

About the Role

We are looking for an experienced Full Stack Engineer to join our team and work on a project using a modern technology stack.

We are looking for an engineer who can independently manage the entire development lifecycle — from understanding requirements and designing solutions to testing, deployment, and production support.
 

Requirements

• Commercial experience with Python  in production.
• Hands-on experience with asyncio, Dependency Injection, and background tasks.
• Strong knowledge of PostgreSQL, including transactions, locking, indexes, and safe migrations.
• Experience implementing authentication and authorization using OAuth2/OIDC and JWT.
• Understanding of stateless services and backend architecture principles.
• Production experience with AWS or Azure.
• Daily use of AI-powered development tools such as GitHub Copilot, Cursor, Claude, or similar.
• Ability to work autonomously, translate requirements into technical solutions, make engineering decisions, write tests, and deliver features to production.
   

Additional Requirements for the Full Stack Role

• Confident Middle-level experience with React.
• Commercial experience with TypeScript.
• Hands-on experience with Next.js.
   

Nice to Have

• Experience with Redis.
• Knowledge of Hasura and GraphQL.
   

Important Details

• Candidates must be physically located in an EU country.
• Full-time availability is required.
• English level: Upper-Intermediate (B2) or higher.

Location: Poland
Work format: Remote
Employment: Official employment in Poland
English: Fluent

About the Role

We are looking for a Senior Software Engineer with strong Go and Vue.js experience to join our team.

You will work across backend and frontend development, build and maintain APIs, integrate third-party services, and contribute to automation solutions. We are looking for someone who can independently take ownership of the full development cycle.

Tech Stack

• Backend: Go (Golang)
• Frontend: Vue.js, TypeScript
• Cloud: AWS
• Database: PostgreSQL

Requirements

• 5+ years of experience as a Full-Stack Engineer
• Strong Go experience building backend services and APIs
• Production experience with Vue.js and TypeScript
• Ability to independently handle backend, database, and frontend development
• Experience integrating third-party APIs
• Fluent English

Nice to Have

• Experience building LLM-powered features or AI automation solutions
• AWS experience
• Background in fintech or accounting software
• Interest in growing into a Tech Lead role within 12–18 months

We Offer

• Remote work
• Official employment in Poland
• Opportunity to work with modern technologies and AI-driven solutions
• Professional growth and potential career development into a Tech Lead position

What We Offer

• 100% remote work opportunity and flexitime - choose working hours between 8:00-20:00 Kyiv time.
• Personal Growth Budget in USD (Travel, Health & Psychotherapy, Sports, Education & Training, Software, Work Equipment).
• Competitive compensation in USD with regular salary reviews.
• Paid vacation, holidays, and sick leave.
• Continuous professional growth through mentorship, feedback, and knowledge sharing.
• English Speaking Club with a native speaker.
• Access to AI tools, including coding assistants for engineers and LLM subscriptions for non-technical specialists.
• Projects with clients across Europe and North America across FinTech, Logistics, Hospitality, E-commerce, Legal, Music, and other industries.
• Transparent processes, flat management structure, and a supportive team culture.

About the Role

• We are hiring a Senior Full-Stack Engineer to become one of the strongest technical contributors on the team.
• The single most important thing we’re looking for is experience scaling a SaaS product. We want someone who has already seen what happens as a live platform grows: increasing complexity, technical debt, scaling bottlenecks, evolving data models, unreliable integrations, and engineering decisions that worked at one stage but became expensive at the next.

• This is a hands-on senior engineering role with strong technical leadership expectations. You will design and write production code, own substantial systems end to end, influence architectural decisions, challenge technical direction when needed, and raise the engineering level of the people around you.

   

Project

• FinTech SaaS platform built for the restaurant and hospitality industry. Our products handle tip pooling and payouts, payroll, reporting and compliance, labor and operational data, and integrations with the systems hospitality businesses already use. The platform is live, serves thousands of customers and moves millions of dollars.

   

Required Hard Skills

• Several years operating at Senior Engineer level on a SaaS product that grew significantly while you were there. You have seen a system become meaningfully bigger and understand the problems that tend to arrive next.
• Strong Python and Django / Django REST Framework experience, or deep experience in a closely comparable backend stack.
• Strong React and TypeScript experience, with the ability to work effectively across backend and frontend when required.
• Strong PostgreSQL and data modeling skills. You should be comfortable designing schemas that can evolve as the business grows into new products and safely changing them once they contain production data.
• Production experience with asynchronous and distributed workloads using Celery or comparable technologies.
• Strong understanding of API design and third-party integrations, including failure handling, retries, idempotency, data consistency, reconciliation, and situations where the system on the other side is unreliable or outside your control.
• Strong understanding of software architecture and the ability to make pragmatic architectural decisions inside a large existing codebase rather than only designing systems from scratch.
• Experience identifying and addressing performance, scalability, reliability, and maintainability problems before they become critical.
• Strong testing practices and experience safely evolving systems that must remain operational while they are being changed.
• Production experience with Docker, CI/CD, monitoring, error tracking, and observability. 
• Strong Linux knowledge. 
• Sound judgment about technical debt: knowing the difference between an acceptable shortcut and one that will create significant problems later, and being able to improve a system while it remains in production.
• Everyday experience with using AI agents for work (Claude Code or Codex). Familiar with configuring AI toolset, understanding pros and cons of modern AI.

Current Stack

• Django / DRF, PostgreSQL, Redis, Celery, Docker, Traefik, Datadog, Sentry, Mailgun, GitHub Workflows.
• Next.js, MUI, TanStack Query, React Hook Form, Zod, Vitest.

Nice to Have

• FinTech or financial systems experience, particularly payments, payouts, ledgers, reconciliation, payroll, banking, audit trails, or other systems where financial correctness matters.
• Experience with restaurant or hospitality technology, including POS, scheduling, workforce management, payroll, or similar systems.
• Experience with high-volume or business-critical third-party integrations.
• Experience improving a system with meaningful legacy code or technical debt while the product remained actively developed.
• Experience with multi-tenant SaaS architectures.
• Experience improving engineering practices across a team rather than only within your own work.
• Experience as a Senior Engineer in a company of roughly 20–200 people, where your role included helping decide what technical work actually mattered.

Required Soft Skills

• Ability to take technical ownership beyond your own tickets and think about the health of the product and engineering system as a whole.
• Strong engineering judgment and the confidence to challenge technical decisions constructively, including decisions made by Staff Engineers and engineering leadership.
• Comfort with ambiguity. Problems will not always arrive fully specified, and part of your job is asking the questions that make them clear before code gets written.
• Ability to explain complex technical trade-offs clearly to engineers, Product, and non-technical stakeholders.
• A strong teaching mindset. You explain your reasoning, document important decisions, review code seriously, and make the engineers around you better rather than becoming the only person who understands a difficult system.
• Comfortable taking leadership during difficult technical situations without waiting for someone else to define every step of the solution.
• Strong written communication and self-direction. The team is distributed across Canada and Europe with limited live overlap, so you need to communicate clearly asynchronously and drive your own work.
• Fluent English, written and spoken.

Key Responsibilities

1. Own substantial systems end to end

• Take meaningful problems that have been identified but not fully solved and work with Staff Engineers and Product to determine the right technical approach.
• Own complex initiatives from problem definition through design, implementation, migration, testing, rollout, and production monitoring.
• Design not only for the expected path, but also for what happens when something goes wrong in production.

• Remain responsible for the systems you build once they are carrying real customer data and real money.

   

2. Help strengthen the architecture of a growing product

• Work closely with Staff Engineers and the VP of Engineering on architectural decisions and technical direction.
• Understand the existing architecture and identify where today’s decisions may create tomorrow’s problems.
• Identify areas where the platform may struggle as product complexity, integrations, customers, data volume, and transaction volume increase.
• Challenge architectural decisions constructively when you see a better approach.

• Help evolve the architecture incrementally through small, safe improvements rather than unnecessary rewrites or over-engineering.

   

3. Protect correctness, reliability, and engineering quality

• Treat financial correctness as a first-class engineering concern.
• Design for reconciliation and auditability: how we prove a number is correct, understand how it was produced, and detect discrepancies before customers do.
• Use Datadog, Sentry, logs, production data, and other signals to identify recurring problems and their root causes.
• Improve observability, error handling, testing, deployment safety, performance, and operational reliability.

• Make sure recurring production problems are solved systematically rather than repeatedly patched.

   

4. Own technically difficult areas of the product

• Lead work involving complex third-party integrations, asynchronous workflows, data synchronization, reconciliation, migrations, and failure recovery.
• Design systems that behave predictably when external APIs fail, requests are duplicated, jobs execute late, or data arrives in an unexpected state.
• Work closely with Product to make technical feasibility and engineering constraints visible before implementation begins.

• Help break large technical initiatives into safe, incremental pieces that can be built, migrated, and released without unnecessarily putting the existing platform at risk.

   

5. Make the case for important technical work

• Identify technical debt, platform investment, reliability work, and architectural improvements that may not naturally appear on the product roadmap.
• Distinguish between debt that can safely remain and debt that is materially affecting reliability, engineering speed, or future product development.
• Make the business and technical case for that work using evidence rather than engineering preference alone.

• Help sequence improvements so they support product development rather than competing with it unnecessarily.

   

6. Raise the level of the engineering team

• Be a strong technical reference point for other engineers.
• Review architecture, designs, and pull requests with a focus on correctness, reasoning, and long-term maintainability.
• Explain why you would make a decision differently rather than simply leaving a verdict.
• Mentor engineers through reviews, pairing, technical discussions, and example.
• Document important knowledge and decisions so understanding stays with the team rather than with one individual.

• Take leadership when a difficult technical problem crosses multiple areas or engineers.

   

7. Remain hands-on

• Design and write production code across the backend and frontend.
• Take direct ownership of technically difficult or risky work when appropriate.
• Debug difficult production issues and establish their root causes.
• Read and understand the existing codebase before changing it.

• Build enough direct knowledge of the platform to ensure your technical decisions are grounded in how the system actually works.

   

Who this position is not for

• This is not a role for someone whose definition of seniority is simply delivering more complicated tickets. 
• If you prefer receiving clearly defined tickets and technical solutions and then implementing them, this role will probably be frustrating.
• It is not a management role. You won’t have direct reports or headcount responsibility. Leadership here comes through technical ownership, judgment, mentoring, reviews, and influence.
• It is also not a Staff Engineer role. Our Staff Engineers and VP of Engineering set the overall technical direction and architecture. You will help shape that direction, challenge it when needed, and fully own the design and implementation of substantial systems within it.
• It is not a greenfield role. You will be joining a live platform with thousands of customers and a roadmap that does not pause while technical improvements are made. Much of the work involves understanding existing systems, migrating them safely, and improving them incrementally rather than replacing them.
• If you naturally ask what happens when the system gets significantly larger, how it fails, how we know the data is correct, and what today’s shortcut will cost us a year from now, you’ll recognize the work.

Things You Should Know Before Applying

• The engineering challenge is no longer simply building features quickly. It is continuing to ship while improving reliability, scalability, architecture, and the technical foundation required for significant year-over-year growth
• There is technical debt. Part of your job is determining which debt actually matters, making its impact visible, and helping address it without stopping product development.
• Requirements will sometimes be incomplete. We expect you to help shape the solution rather than wait for perfect specifications.

• You will be expected to disagree when necessary, propose better approaches, and explain the reasoning behind them.

   

We’re looking for a Mid-Level Fullstack Software Engineer to help build and improve our products. You’ll work with a team to deliver reliable, scalable features, solve technical challenges, and contribute to a great user experience.

What you’ll do

• Develop and maintain features across our applications.
• Collaborate with engineers throughout design, development, testing, and release.
• Write clean, secure, maintainable code and contribute to code reviews.
• Help improve product usability and resolve technical issues.
• Build and test prototypes, then turn successful ideas into production features.

• Take part in planning and estimation, and help the team deliver work predictably.

   

What we’re looking for

• 3+ years of experience developing web applications.
• Strong software engineering fundamentals and experience building production software.
• Proficiency in at least one back-end technology, such as Node.js, Python, Rust, or .NET.
• Experience working with SQL and NoSQL databases
• Experience with unit and integration testing.
• Familiarity with version control and modern development workflows.
• A practical approach to solving problems and a willingness to learn new technologies.

Nice to have

• Experience with HTML, CSS, JavaScript, or TypeScript.
• Experience with React or Angular.
• Experience with CI/CD and Agile ways of working.
• Experience using AI tools to support software development, such as coding assistants, while reviewing and validating their output.

You’ll have room to take ownership of your work, learn from experienced engineers, and make a meaningful contribution to the product as it grows.

We’re looking for a Senior Full-Stack Developer with strong Node.js and React experience to join our international team.

This role involves building and scaling applications, working with high-load backend services, and developing frontend functionality. We value clear communication, practical problem-solving, and hands-on experience with AI-assisted development.

What you’ll do
 

- Develop and maintain backend services using Node.js and NestJS.

- Build and improve frontend functionality with React.

- Work on application performance, reliability, and scalability.

- Develop and scale message consumers, background workers, and queue-based processing.

- Work with cloud infrastructure and Kubernetes environments.

- Collaborate with the team on technical decisions and implementation.

- Use AI development tools thoughtfully, reviewing generated code for correctness and maintainability.

What we’re looking for

- 5+ years of professional software development experience.

- Strong expertise in Node.js and NestJS.

- Experience handling high-load or high-traffic applications.

- Experience working with cloud infrastructure and Kubernetes.

- Experience with RabbitMQ or similar message queue technologies.

- Experience scaling message consumers and background workers.

- Fluent English, with the ability to explain ideas clearly and communicate effectively.

- Practical experience with AI-assisted development and an interest in current AI tools and practices.

Experience in a particular industry is not required - your technical expertise matters most.

Nice to have

- Experience managing and optimizing MySQL databases with large datasets or high workloads.

- Experience with the ELK stack.

- Hands-on experience developing applications with React.

What we offer

- Long-term collaboration with an international team.

- B2B cooperation with hourly compensation in USD.

- Work on technically challenging applications with a focus on performance and scalability.

Hiring process

An introductory HR call followed by two technical interviews.

Important: We expect AI tools to be part of your daily workflow. Candidates who primarily rely on traditional development approaches and do not actively use modern AI coding tools are unlikely to be a good fit for this role.

Are you an AI-driven Full Stack Engineer who uses modern AI tools to build faster, ship faster, and solve complex problems more efficiently?
 

At GT Protocol, we're not looking for traditional developers. We're building an AI-first engineering culture where AI is deeply integrated into the development workflow — from architecture and coding to testing, debugging, research, and product delivery.
 

We are looking for a Senior Full Stack Engineer who embraces AI-assisted development and understands how to leverage modern AI tools to maximize productivity and focus on solving real business problems rather than spending time on repetitive tasks.
 

About the Role

You will be working on GT Protocol's AI-powered trading and investment platform, helping build products used by thousands of users across Web3, CeFi, and DeFi ecosystems.
 

This role combines backend development, frontend development, AI integrations, trading infrastructure, blockchain analytics, real-time systems, and modern AI-driven engineering practices.
 

You will participate in designing and building scalable products while actively utilizing AI development tools as part of your daily workflow.
 

What We Expect from an AI-Driven Engineer

• Comfortable using AI coding assistants as a core part of the development process
• Experience working with tools such as Cursor, Claude Code, ChatGPT, Gemini, Copilot, Windsurf, or similar solutions
• Ability to effectively use AI for coding, architecture exploration, debugging, code reviews, documentation, testing, and research
• Strong focus on shipping results rather than maximizing manual coding hours
• Curiosity and willingness to continuously adapt to new AI-driven development workflows
• Understanding that AI is a productivity multiplier, not a replacement for engineering fundamentals
   

We believe the future belongs to engineers who can combine strong technical skills with the ability to leverage AI effectively. Our goal is to build a team that operates significantly faster than traditional software teams while maintaining high engineering standards.
 

Responsibilities and Duties

• Participate in the design, development, and maintenance of a sophisticated AI-powered trading platform serving thousands of users worldwide
• Develop and maintain backend services using Python, FastAPI, PostgreSQL, MongoDB, and Redis
• Build modern frontend applications using React, Next.js, TypeScript, and Tailwind
• Integrate centralized and decentralized exchanges, blockchain networks, and third-party APIs
• Design and implement real-time systems using WebSockets, Socket.IO, asyncio, and event-driven architectures
• Develop AI-powered features, portfolio analytics, trading automation, and market intelligence tools
• Build and maintain Telegram-based products and AI assistants
• Collaborate closely with Product Managers, Designers, AI Engineers, and other Developers
• Participate in architectural decisions, code reviews, and continuous platform improvements
• Ensure high performance, scalability, and security across all platform components
   

Work Experience

• 4+ years of commercial software development experience
• Experience building production-grade web applications and APIs
• Experience working with cryptocurrency, trading, fintech, Web3, or blockchain products
• Experience working in distributed remote teams
• Bachelor's degree will be a plus
   

Required Skills

• Strong Python knowledge, FastAPI, asyncio, aiohttp, websockets, SQLAlchemy 2.x (async), PostgreSQL, MongoDB, Redis
• JavaScript, TypeScript, React 18+, Next.js, Redux / Redux-Saga, Tailwind CSS
• Docker, Docker Swarm, Linux, Git
• JWT, RBAC, bcrypt, OTP authentication flows
• aiogram 3, CCXT, web3.py, Solana SDK, Alchemy, CoinGecko, GeckoTerminal APIs
• Cursor, Claude Code, ChatGPT, Gemini, Copilot, Windsurf, or similar
• Experience integrating external APIs
• Understanding of scalable distributed systems
• Experience with real-time applications
   

Will Be a Plus

• Personal projects
• English – B2+
   

About GT Protocol

GT Protocol (Global Trading Artificial Intelligence) is an AI-powered crypto trading ecosystem founded in 2021 and the ultimate AI infrastructure for trading.

GT Protocol enables users to build, backtest, optimize, launch, and execute trading strategies using fully automated AI-driven bots across centralized and decentralized crypto markets (CEX and DEX). Its products provide AI-powered infrastructure for strategy creation, optimization, backtesting, and automated execution across the crypto trading ecosystem.
 

Why GT Protocol?

— Over 100,000 users worldwide trust our products.

— Our platform combines AI, blockchain, trading infrastructure, and Web3 technologies into a single ecosystem.

— We process millions of market data events and integrate with major exchanges and blockchain networks.

— Our team includes experts from Europe, Asia, and the United States working remotely and collaboratively across multiple time zones.

— GT Protocol is backed by industry-leading investors and partners, including BNB Chain, Animoca Brands, ChainGPT, DAO Maker, CoinPayments, and others.

— We are regularly featured by major crypto and technology media and participate in leading blockchain conferences worldwide.

— You'll work on products at the intersection of AI, fintech, trading, and Web3 while helping shape the future architecture of the platform.

Currently, our team consists of talented professionals located across multiple countries. Our main office is based in Odessa, Ukraine; however, many team members work remotely worldwide.

Join something big — be a part of GT Protocol and help build the future of AI-powered investing.

We are looking for a Software Engineer to join our team for a long-term project.

Project

A SaaS-based, data-driven eCommerce platform built on AI-powered, fully cloud-native technology for the North American market.

Responsibilities

• Build and own services across the pipeline — ingestion API, validation, stream processing, adapters, serving API.
• Build the UI layer — dashboards and embedded analytics — on top of the data you modelled.
• Make it operable: idempotent ingest and replay, deduplication, provenance, tracing, data-quality checks, tenant isolation, GDPR handling.
• Use AI coding tools to improve development productivity, code quality, debugging, and testing.
• Apply AI-assisted development practices while maintaining established coding standards and version control processes.

Required Skills and Experience

• 5+ years building production services in the cloud as a backend engineer
• Strong in at least one backend language (Java/Kotlin or Go, TypeScript/Node, Python) and comfortable working with JavaScript/TypeScript on the front end (React or similar).
• Real experience with event-driven systems: message queues or streams (Kafka, Pub/Sub, Kinesis), schema evolution, at-least-once delivery, idempotency.
• Microservices architecture — designing and operating independently deployable services with clear API boundaries.
• Solid SQL and data modeling — you can design a warehouse schema and reason your decisions.
• Cloud-native delivery: containers, CI/CD, infrastructure as code, observability, and monitoring.

• You care about data correctness and can explain a metric's definition to a non-engineer.

   

Nice to Have

• Snowflake and dbt.
• Azure (also GCP/AWS — we're multi-cloud by design).
• AI experience
• Looker or another semantic/BI layer, embedded analytics.
• Clickstream or product analytics: web-beacons/tags, sessionization, attribution models.
• E-commerce, search, recommendations, or merchandising domain experience.
• Privacy and compliance work (GDPR, SOC 2).
• Experience with eventual consistency systems.

We Offer

• Full-time remote position
• Long-term project
• Opportunity to work with modern cloud-native and AI-powered technologies
• Friendly and professional international team

We are looking for a trainee in Software Development who wants to grow into a Full Stack Developer. You should be a self-motivated person, eager to learn and apply modern technologies (including AI) to build real solutions for the company. You will work on internal tools, automations, and custom software across front-end and back-end: user interfaces, APIs, databases, integrations, and deployments.

You won’t know everything on day one, but you will learn quickly. Expect to contribute to real company projects within your first months. You will work closely with experienced developers and receive mentorship. Over time, you will take ownership of tasks and grow into an independent engineer. This is a long-term opportunity and a career path, not just an internship.

Responsibilities

• Develop and maintain internal tools, business automation solutions, dashboards, and CRM systems.
• Build user interfaces using React and develop backend services with Node.js.
• Design database structures and write queries for PostgreSQL and MongoDB.
• Integrate third-party APIs and implement AI workflows using the OpenAI API and AI-assisted tools like Cursor.
• Participate in basic DevOps and deployment activities (Git, GitHub, deployment platforms).

• Collaborate with experienced developers, receive mentorship, and gradually take ownership of end-to-end features.

   

Requirements

Must-have:

• Fundamental knowledge of JavaScript and core web development principles (frontend & backend basics).
• Strong motivation to learn fast, adapt, and grow professionally.
• Desire to build a long-term career in Full Stack Development.

Will be a plus:

• Experience with React or Node.js (pet projects, coursework, or self-study).
• Practical understanding of REST APIs and database concepts.
• Familiarity with Git and GitHub.

Not required:

• Commercial software development experience.
• Fluent / perfect English.

• Full mastery of the entire tech stack from day one.

   

We care more about your learning ability, mindset, and motivation. We encourage candidates to apply even if they do not match 100% of the list.

How to Apply

Ready to start your engineering journey with us? Send us your CV (along with a link to your GitHub, pet projects, or portfolio if you have them). Tell us briefly why you want to grow as a Full Stack Developer — apply today and let’s build together!

Unibrix is looking for an experienced Senior Java Developer with strong hands-on expertise in Java and Spring Boot to join a client project in a staff augmentation model.

You will collaborate with an international engineering team and work closely with a Senior Software Architect to support backend development, maintain high code quality, and contribute to the project's technical delivery.

Tech Stack:

• Backend: Java, Spring Boot, Spring Data, Spring REST
• Cloud & Infrastructure: AWS, Kubernetes, Terraform
• Databases: Relational Databases, SQL, Transactions
• API Tools: Swagger, Postman
• Testing: JUnit 5, REST Assured

• Frontend: React, TypeScript

   

Requirements:

• Strong commercial experience in Java backend development.
• Recent hands-on experience with Spring Boot.
• Solid understanding of RESTful API development and integration.
• Experience working with Spring Data and relational databases.
• Strong knowledge of SQL and database transactions.
• Practical experience with AWS cloud services.
• Familiarity with Kubernetes and Terraform.
• Experience writing and maintaining automated tests using JUnit 5 and REST Assured.
• Experience working with Swagger and Postman for API documentation and testing.
• Understanding of Agile/Scrum development practices.
• Ability to collaborate effectively with distributed engineering teams.

• Strong communication, problem-solving, and analytical skills.

   

Nice to Have:

• Experience with React and TypeScript.
• Familiarity with Datadog or similar monitoring and observability tools.
• Experience with manual UI testing and automated backend testing.

• Previous experience working in a staff augmentation environment.

   

Responsibilities:

• Develop, maintain, and enhance backend services using Java and Spring Boot.
• Design, implement, and maintain RESTful APIs.
• Work with relational databases, SQL queries, and transaction management.
• Collaborate with the Senior Software Architect and other engineering team members.
• Write and maintain unit and API tests.
• Participate in code reviews and contribute to code quality improvements.
• Support application deployments and troubleshooting in AWS/Kubernetes environments.
• Participate in Agile ceremonies, including stand-ups, sprint planning, demos, and retrospectives.

Collaborate with the team to ensure timely delivery of project requirements.

Working conditions:

• Remote work format; 
• A flexible work schedule; the result is what matters most (8 hours a day, 5/2);
• Holidays: 24 working days after the probation period;
• Paid sick leave: 10 days after the probation period;
• 50% coverage for gyms, conference compensation, and after the probation period;

Project Description:

Monitoring and diagnostics system which fulfills both local and remote data access and analytics requirement, as well as local and remote

troubleshooting purpose.

Responsibilities:

Your day-to-day work and responsibilities:

- Design, develop, and maintain full-stack web applications

- Improving system quality by identifying issues and common patterns, and developing standard operating procedures

- Enhancing applications by identifying opportunities for improvement, making recommendations and designing and implementing systems

- Maintaining and improving existing codebases and peer review code changes

- Collaborating with cross-functional teams (designers, QA, product managers)

- Working with AWS services to deploy, scale, and manage applications

Mandatory Skills Description:

BS or MS degree in Computer Science, Engineering, or related field (or equivalent experience)

React/Python- 70/30

4+ years of full-stack development experience (adjustable)

Proven experience delivering production-grade applications

Strong experience with React.js (Hooks, Context, state management)

Proficiency in JavaScript / TypeScript

Strong experience with Python

Database design and optimization skills

Hands-on experience with AWS services such as: EC2, S3, Lambda, API Gateway, RDS / DynamoDB, CloudWatch, CloudFormation

Experience deploying and managing applications in AWS

CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins)

Strong problem-solving and analytical skills

Good communication and teamwork abilities - important

Ability to work independently and take ownership - importaant

Attention to detail and commitment to quality

Nice-to-Have Skills Description:

Knowledge of Terraform or Infrastructure as Code

Node.js

Languages:

English: B2 Upper Intermediate