Jobs Fullstack

We are looking for a Senior Full-Stack Engineer to join our client's team on a long-term engagement. The role starts with a full-time engagement for September–October to support a complex migration project, with the possibility of continuing on a part-time basis of approximately 4 development days per month after the migration is completed.

The role is ideal for a highly experienced Full-Stack Engineer who is comfortable working across both frontend and backend technologies and has strong hands-on experience with Shopify, Stripe, Node.js, and Nuxt. The migration project is particularly backend-heavy, so deep expertise with Stripe is a must.

Key Responsibilities:

• Lead and contribute to a complex migration project with a strong focus on Shopify, Stripe, Node.js, and Nuxt
• Develop and maintain full-stack web applications using Nuxt, Node.js, and TypeScript
• Integrate and work extensively with Shopify and Stripe APIs
• Build responsive and reusable UI components using Tailwind CSS
• Design and implement reliable backend integrations and business logic
• Troubleshoot complex technical challenges and independently research effective solutions
• Take ownership of assigned tasks and deliverables throughout the migration
• Collaborate closely with the client's team to understand requirements and deliver high-quality technical solutions
• After the migration phase, continue supporting the client on a part-time basis as needed

Requirements:

• 5+ years of commercial software development experience
• Strong hands-on experience with Node.js, TypeScript, and Nuxt
• Strong experience with Shopify, including Shopify integrations and APIs
• Deep hands-on experience with Stripe is a must
• Solid experience with Tailwind CSS
• Strong understanding of backend development and API integrations
• Ability to work independently and take ownership of complex technical tasks
• Strong problem-solving and analytical skills

• Good command of English, both written and spoken

   

Nice to Have:

• Experience working on complex migrations
• Experience working with Shopify and Stripe in production environments
• Previous experience working in a startup or fast-paced environment

What We Offer:

• Opportunity to work with a well-established global company
• Opportunity to work with a modern Full-Stack technology stack
• High level of ownership and autonomy
• Flexible and remote working environment
• Competitive compensation

VUKA MONEY (PTY) LTD — українська фінтех-компанія, що запускає МФО в Південній Африці. ІТ-команда зараз невелика (CTO, CPO), тому шукаємо двох сильних Senior-розробників, які самостійно вестимуть продуктові задачі.

Обов'язки

● розробка та підтримка продукту на TypeScript (React/Next.js + Node.js/Nest.js);

● проєктування й реалізація бекенд-сервісів (Fastify, Prisma, PostgreSQL, Redis);

● участь у код-рев'ю, дотримання стандартів якості коду;

● робота із зовнішніми API (Stripe та інші);

● взаємодія з CTO та CPO щодо архітектурних рішень.

Вимоги

● впевнене володіння TypeScript;

● Front-end: React, Next.js (App Router), TailwindCSS, shadcn/ui, Tanstack Query/Table, React Hook Form, Zod;

● Back-end: Node.js, Nest.js, Fastify, Prisma, PostgreSQL, Redis (Valkey), S3;

● досвід роботи з docker/docker compose;

● англійська від рівня B1.

Буде перевагою

● досвід з чергами (Kafka, RabbitMQ, BullMQ);

● Temporal / vercel/workflows;

● tRPC, GraphQL;

● better-auth, Google Auth, OIDC;

● ClickHouse;

● Vitest, Playwright;

● Sentry, OTEL, Grafana;

● WebSocket / socket.io.

Умови

● віддалена робота;

● випробувальний термін — 30 днів;

● 2 етапи співбесіди, ТЗ,  фінальне рішення — CTO.

Чекаємо на ваше резюме!

About the Role

As a Python-focused Forward Deployed Engineer, you'll embed with customers to design, build, and ship production software fast — full-stack apps, cloud infrastructure, and applied AI solutions built around Python.

What You'll Do

• Build and ship Python-based applications, APIs, and integrations directly with customers, from prototype to production.
• Design and deploy cloud-native, containerized infrastructure (Azure/AWS/GCP) with CI/CD and Infrastructure as Code.
• Build and productionize GenAI/agentic solutions (RAG, vector search, LLM orchestration) using Python frameworks like LangChain/LangGraph.
• Lead PoCs and modernization efforts that turn customer problems into working solutions.

What You'll Bring

• Strong Python engineering skills — APIs, microservices, data pipelines, and automation.
• Cloud experience (Azure, AWS, or GCP) with containers/Kubernetes and IaC (Terraform).
• Hands-on GenAI/ML experience: LangChain, LangGraph, RAG, vector databases (Pinecone/Weaviate/FAISS).
• Comfort working directly with customers in fast-moving, ambiguous engagements.

Nice to Have

• Experience with additional languages (JS/TS, Java) or frontend frameworks.
• Cloud or enterprise architecture certifications.

We are looking for a Senior PHP Full Stack Engineer with React to join our team!

Our client is transforming how leading companies search, analyze, and use patent data through an all-in-one, AI-powered SaaS platform that supports drafting, prior art analysis, collaboration, and project management. The role sits within a multidisciplinary team of IP software specialists, patent data professionals, and patent attorneys, focused on deep-cleaning and organizing global patent data to deliver accurate insights and trend visualizations. The Engineer will be responsible for developing, maintaining, and evolving key areas of the website and related user-facing products. 

Responsibilities:

• Design, build, and maintain the front-end interface for product delivery areas of the client application site, as agreed from time to time with product stakeholders, product designers, and the Technical Program Manager.
• Initially focusing on resolving known and documented bugs across existing products before contributing to ongoing enhancements and new feature development.
• Implement responsive layouts and ensure cross-browser/device compatibility
• Deliver clean, intuitive UI/UX by working against a ticket-based backlog with direction and, as projects evolve, collaborating more directly with product stakeholders.
• Work with external developers and designers to ensure consistent branding, performance, and technical quality
• Ensure accessibility best practices (WCAG) across relevant areas of the site
• Optimize site performance through modern tooling, bundling, and code quality improvements
• Build and maintain additional sections of the client website as needed
• Develop and manage analytics and testing frameworks, including Google Analytics, event tracking, and A/B testing capability
• Provide basic database or API integration support, working alongside the back-end engineering team where appropriate
• Assist in documentation of front-end components, design patterns, and development processes
• Contribute to continuous improvement of development workflows, version control practices, and release processes
• Write and maintain automated tests including unit, integration, and end-to-end (E2E) tests to ensure application quality and reliability.

Requirements:

• 5+ years of experience working in standalone roles responsible for the development and maintenance of web interfaces
• Strong knowledge of the following technical areas: PHP, JavaScript, React
• Experience with D3, Azure, XML & JSON data formats
• Ability to produce scalable, maintainable solutions
• Strong time-management skills with the ability to handle multiple projects concurrently
• A proactive, positive approach to delivering high-quality work
• English level - at least Upper-Intermediate

Nice to have:

• .NET Framework 4.6 is a big plus
• MySQL or SQL Server experience
• Experience setting up A/B testing or similar experimentation frameworks
• Exposure to modern AI-powered development tools and workflows (e.g., code assistants, automated testing, or AI-driven UI optimization)

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

This is an unpaid co-founder opportunity. I’m looking for a technical partner to build a marketing automation platform together from the ground up.
 

I’m looking for a developer with strong Swift experience, especially Swift for iOS and macOS/desktop development. Full-stack experience is also important.
 

What I’m looking for

• Strong Swift experience — iOS + macOS/desktop
• Full-stack development experience
• React / React Native — a strong plus
• Node.js — a strong plus
• Ability to take ownership of technical decisions and build products independently
• Entrepreneurial mindset and genuine interest in building something long-term
   

What we’ll do

We’ll work together as technical co-founders: shaping the product, building the platform, making architectural decisions, and bringing it to market.
 

I’m looking for someone who wants to build and own something together, rather than simply contribute to someone else’s project.

If this sounds interesting and you’re strong with Swift, feel free to reach out — I’d be happy to tell you more about the idea and discuss whether we could be a good fit.

We’re looking for a Senior Full-Stack Engineer / System Architect for a Vienna-based SaaS company on a mission to help organizations unleash their leadership potential — through digital feedback workflows, OKRs, mentoring, and people analytics that support managers at every level. 

The Role

We're hiring a hands-on Full Stack System Architect to lead architecture for our enterprise AI SaaS platform — spanning Angular, TypeScript, Python, Node.js, cloud infrastructure, and AI/LLM integration. The product combines agentic AI workflows with precision AI tools for people analytics, leadership development, and performance management.

This is not a management role. Our six-person remote team (four full-time, spanning Austria and India) is close-knit, well-organized, and doesn't need another layer of hierarchy. We need a technical peer — a "shark in the pond" — senior enough to challenge, mentor, and upskill the team through hands-on delivery, not authority.

What You'll Do

• Own system architecture for a scalable, enterprise-grade AI SaaS platform
• Architect across the stack: Angular/TypeScript frontend, Python/Node.js backend
• Design and ship AI/LLM integrations in production, including agentic workflows
• Take direct ownership of project streams and sprints
• Expand the team's use of AI-assisted tooling (we currently use Claude for coding and design)
• Mentor and gently challenge the team, raising standards without disrupting trust
• Manage infrastructure: cloud, CI/CD, Docker, Kubernetes, Terraform

What We're Looking For

• Proven scalable SaaS system architecture experience
• Strong Angular + TypeScript and Python + Node.js expertise
• Track record integrating AI/LLMs into production
• Solid cloud, CI/CD, Docker, Kubernetes, Terraform skills
• Strong technical leadership with genuine hands-on delivery — a senior IC, not a manager
• A collaborator who values cultural fit and trust, and can integrate into an established remote team rather than restructure it
• Nice-to-have: HR-tech / people-analytics domain experience; experience mentoring engineers remotely

Practical Details

• Full-time, flexible start 7:00–10:00 AM Vienna time
• Fully remote — anywhere in Europe or safe zones in Ukraine
• Full GDPR compliance, VPN and two-factor authentication required
• Joining a 6-person engineering team led by a strong 26-year-old lead engineer

Equal opportunity — we welcome applicants of all genders and backgrounds; our engineering team is currently male-dominated and we're working to change that.

We're an early-stage product company building an AI-powered analytics platform for the iGaming industry. Users get answers from their data in plain English — an LLM turns questions into validated SQL over a large data warehouse — alongside a set of analytics dashboards and data pipelines. It's live in production.

You'd be our first dedicated engineer, working directly with a technical founder (product) and an experienced CTO (architecture + code review) — with a real path to Tech Lead as the team grows. You won't be flying solo, and you'll help shape the architecture, not just maintain it.

What you'll do

• Build and ship features across the backend and the dashboard.
• Write correct, performant SQL against a large Postgres warehouse — the numbers drive real decisions.
• Extend the LLM→SQL pipeline and the analytics APIs behind the product.
• Own reliability, testing, and deploy stability as we scale.

• Maintain and extend the React / TypeScript front end.

   

Stack

• Backend: Python 3.12 + FastAPI (async, SQL-first with asyncpg — no ORM).
• Data: large Azure PostgreSQL warehouse (tens of millions of rows) + nightly aggregation pipelines.
• AI: Anthropic Claude (natural-language → SQL, agent workflows).
• Frontend: React 18 + TypeScript + Vite, shadcn/ui + Tailwind, TanStack Query, Recharts.
• Infra: Azure, Redis, Docker, GitHub Actions.

Note: the data-science/ML models are owned by the founder — you won't build or maintain those.

You'll thrive here if you have

• Strong SQL and relational-DB skills (Postgres a plus) — the single most important thing.
• Solid Python, ideally with an async framework (FastAPI).
• Good React + TypeScript.
• A correctness-first instinct for data, and the ability to pick up a fast-built codebase and make it solid.

• Comfort with cloud + CI/CD (Azure a plus) and Docker.

   

Nice to have

• LLM app experience (Anthropic/OpenAI, NL→SQL, RAG).
• Data engineering / BI / warehousing background.
• iGaming, fintech, or marketplace domain experience.

Why join

• A live, revenue-generating product — early enough to shape it.
• A clear growth path to Tech Lead.
• Modern stack: large data warehouse + production LLM pipeline + polished React app.
• Real support: a technical founder on product, an experienced CTO on engineering.

Senior Fullstack Engineer (React + NestJS + AWS)

Our client is looking for a Senior Fullstack Engineer to join a high-impact product team working on a modern SaaS platform and internal AI-related tooling for an Israeli startup operating in the geospatial intelligence and data analytics domain.

The product combines scalable cloud infrastructure, AI-driven systems, and large-scale data processing used by enterprise customers in insurance, real estate, and financial industries.

You’ll join a lean engineering team where every developer has direct impact on architecture, product decisions, and production systems.

## Tech Stack

React • TypeScript • NestJS • AWS • PostgreSQL • Docker • GitHub Actions

## What You’ll Do

— Develop and maintain full-stack features using React, NestJS, and AWS

— Build scalable backend services and REST APIs

— Work with PostgreSQL databases: schema design, optimization, migrations

— Develop microservices and event-driven systems using AWS services

— Maintain CI/CD pipelines and testing infrastructure

— Improve system observability, monitoring, and reliability

— Collaborate closely with Product and Engineering teams

— Participate in architectural discussions and technical decision-making

— Write clean, maintainable, and well-documented code

## Requirements

— 5+ years of commercial fullstack experience

— Strong experience with React + Node.js/NestJS + TypeScript

— Hands-on AWS experience (Lambda, EC2, SQS, S3, RDS, CloudWatch)

— Experience with microservices architecture

— Strong knowledge of PostgreSQL

— Docker and CI/CD experience

— Solid understanding of REST API design

— Good Git workflow practices

— Ability to work independently and take ownership

## Nice to Have

— Experience with GIS, mapping, or geospatial technologies

— Experience with monitoring/observability tools

— Startup experience or work in small high-impact teams

— Experience with performance optimization

— Mentoring or leadership experience

## Working Style

— Small engineering team with direct access to Product and CTO

— Fast-paced startup environment

— High ownership and autonomy

— Scrum-based workflow with 2-week sprints

## Hiring Process

1. Technical Screening

2. System Design Interview

3. Culture & Leadership Interview

If you enjoy building scalable systems, working closely with product teams, and having real ownership over technical decisions — we’d love to hear from you.

Meet the YozmaTech

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is looking for an AI Builder / Full-Stack Engineer to join an early-stage startup with a very small team and a high level of ownership.

The company is building an AI-native product for the janitorial industry that automates the processing of large volumes of complex documentation, including contracts and RFPs. The product analyzes this information and generates accurate, detailed bids, including pricing, equipment selection, and task breakdowns down to the room and space level.

This role is ideal for an engineer who can take an AI capability end-to-end — from designing agents and backend systems to building the product experiences through which users interact with them. You’ll work across AI/LLM engineering, backend systems, data pipelines, and full-stack product development.

Key Requirements:
🔹 Strong commercial experience with AI/LLM engineering and backend development;
🔹 Strong Python engineering skills;
🔹 Hands-on experience building AI agents, LLM workflows, or AI-native systems;
🔹 Experience designing backend services, APIs, data pipelines, and working with databases;
🔹 Ability to work with unstructured data and build systems for processing and analyzing complex information;
🔹 Experience integrating and working with LLM APIs and AI models;
🔹 Comfortable building full-stack product features and modern web UIs;
🔹 Experience with React, Next.js, and/or Node.js;
🔹 Strong understanding of system design, data modeling, debugging, and infrastructure;
🔹 Experience testing AI systems and evaluating the quality of model outputs;
🔹 Ability to take an AI capability from agent/backend logic through to a usable customer experience;
🔹 High level of ownership and ability to independently drive technical work from architecture to production;
🔹 Comfortable working through ambiguous product and technical requirements in a fast-paced startup environment;
🔹 Pragmatic approach to engineering — knowing when to build deeply and when to ship quickly;
🔹 English – Upper-Intermediate or higher.

Will be plus:
🔹 Experience working specifically with contracts, RFPs, or other complex business documentation;
🔹 Experience building UIs for managing or interacting with AI agents;
🔹 Experience with both commercial and open-source AI models;
🔹 Previous experience in the janitorial / cleaning services industry or similar domain;

What you will do:
🔹 Design and deploy agentic AI workflows, agent harnesses, and orchestration systems;
🔹 Develop and maintain the backend for AI agents that process and analyze contracts, RFPs, and other complex documents;
🔹 Build pipelines for large volumes of unstructured data, including OCR and vision-based document and image analysis;
🔹 Integrate AI tools and models, including OpenAI, Google, and open-source models, using Python;
🔹 Build AI agent orchestration using LangChain, Deep Agents, and similar frameworks;
🔹 Build backend services, APIs, data pipelines, and core infrastructure;
🔹 Own data flows across ingestion, transformation, storage, retrieval, evaluation, and application usage;
🔹 Design and maintain databases, including Postgres and MongoDB;
🔹 Build full-stack product experiences around AI capabilities, including agent interfaces, review/approval flows, and AI-assisted workflows;
🔹 Collaborate with frontend development using React, Next.js, and Node.js to integrate AI agents into the product;
🔹 Turn structured and unstructured AI outputs into polished user-facing experiences, documents, and product workflows;
🔹 Build datasets and testing approaches for AI systems and implement evaluation metrics, including LLM-as-a-judge and statistical evaluation;
🔹 Debug model behavior, pipeline failures, data quality issues, frontend/backend integration, and system performance;
🔹 Own complex technical problems end-to-end, from architecture and implementation through production;
🔹 Build reliable, scalable, and secure systems for an AI-native product;

Interview stages:
🔹 HR Interview;
🔹 Technical Interview — 30 min;
🔹 Non-technical / Culture Fit Interview — 60 min;
🔹 Deep Technical Interview — 1 hour;
🔹 Reference Check;
🔹 Offer;

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

Проєкт комерційних закупівель E-Tender — SaaS-платформа для корпоративних тендерів. Шукаємо Senior Fullstack Developer'а, який зможе не лише реалізовувати фічі, а й впливати на архітектуру та технічні стандарти команди.

Requirements:

- 5+ years experience in commercial software development

- C#; .NET 6/8; ASP.NET Core Web API

- Entity Framework Core; MS SQL Server + query optimization, SQL Profiler

- Message queues: RabbitMQ / MassTransit — production experience

- Background jobs: Hangfire або аналог — production experience

- Distributed transactions / saga pattern (MassTransit Saga або аналог)

- Performance profiling: query optimization, memory/CPU profiling (.NET diagnostics tools)

- Розуміння кешування: Redis або in-memory caching strategies

- Elasticsearch — indexing, querying, performance tuning

- Angular 14+; NgRx / RxJS; component architecture, lazy loading

- TypeScript; HTML, CSS/SASS

- Git — branching strategies, code review practice

- Досвід з microservices або modular monolith architecture

- Jira, Time Tracker

Nice to have:

- Event sourcing / CQRS (MediatR)

- Досвід із high-load або multi-tenant системами

- Domain знання e-commerce / marketplace / procurement

- Досвід з ABP Framework або подібними enterprise .NET платформами

- CI/CD (TeamCity / GitHub Actions)

Responsibilities:

- Самостійний дизайн і реалізація нових фіч від BE до FE

- Code review та технічна менторська підтримка молодших розробників

- Участь в архітектурних обговореннях і технічних рішеннях

- Тісна взаємодія з BA та QA в рамках продуктових спринтів

- Back end heavy (70/30), Angular — за потребою продукту

Location & English requirements:
This is a fully remote position within the European Union, with priority given to candidates based in Poland. Other EU locations may also be considered.
Strong English (Upper-Intermediate/C1 or higher) is required - all calls, discussions, and documentation happen fully in English, and you'll be expected to actively participate in technical conversations: asking questions, raising concerns, proposing alternatives. If your English is below this level, you likely won't feel comfortable in this role's day-to-day communication - so please keep that in mind before applying.

Who we're looking for:
This is not a "heads-down, ticket-by-ticket" role. Our client's team is a well-established international group of up to 50 people, and they're explicit about what doesn't work for them: people who stay quiet in discussions, who wait to be told exactly what to do, or who seem to be splitting focus with other projects.

What they want instead:

• Someone who speaks up - asks clarifying questions, flags risks, and isn't afraid to challenge an approach if they see a better one
• Someone who treats this as their project, not a rotation - full commitment, no split attention across other engagements
• Someone comfortable operating with a good degree of autonomy, while staying closely aligned with the team
• Someone who brings ideas to code reviews and architecture discussions, not just implementations

If that sounds like you, and your English lets you do it comfortably - read on.

Required skills:

• Commercial experience with PHP and JavaScript, Middle+/Senior level
• Experience with modern JS frameworks (Vue.js preferred)
• Strong understanding of OOP, interfaces, and clean code principles
• Experience with PSR-4 standards and service-oriented architecture (SOA)
• Experience with unit testing (PHPUnit or similar)
• Upper-Intermediate+ English, spoken and written
• Demonstrated ability to communicate proactively: asking questions, giving feedback, contributing opinions in team settings

Will be a plus:

Experience with MediaWiki

Experience with enterprise web platforms or CMS

Prior experience working in distributed international teams (not local outsourcing setups)

Project description:

Our client is a German product company focused on enterprise wiki solutions based on MediaWiki, used by companies worldwide for internal documentation, collaboration, and knowledge management.

This is a long-term product, not a short-term outsourcing project - the team has been building and refining this platform for years, with a strong focus on code quality, usability, and sustainable architecture. The team (Germany + EU, up to 50 people) genuinely values open communication and healthy work-life balance - but that culture depends on people who participate in it, not just execute tasks silently.

Responsibilities:

• Develop and maintain customer-specific features for BlueSpice
• Continuously improve and modernize the product
• Support the team with bug fixing and error analysis
• Write clean, maintainable, and testable code
• Actively participate in code reviews and technical discussions — bring your perspective, don't just approve
• Work closely and communicatively with the German product team
• Technology stack: PHP, JavaScript, Vue.js, MediaWiki, MySQL, Elasticsearch, PHPUnit, SOA, PSR-4

We offer:

• Long-term, stable product project - full commitment expected, no parallel projects
• Direct collaboration with the German team
• Predictable workload and healthy work environment
• Interesting technical challenges and a mature, well-maintained codebase
• Competitive compensation
• Paid vacation and sick leave
• Optional business trips to Germany
• Professional growth within a strong product team

Role Overview
 

We are looking for a Senior Fullstack Engineer to help design, build, and evolve core product functionality across the frontend, backend, and data layers.

This is a hands-on role with real ownership. You will work closely with Product, QA, and other engineers to deliver features end-to-end, from API design and UI behavior to data correctness.

This is not a people-management role. It is focused on shipping high-quality software in a

complex, data-driven environment.
 

What You’ll Do

• Design and build end-to-end product features, from the UI and backend logic to

database interactions.

• Implement and evolve core workflows, including:

o Data ingestion and connector management.

o Metrics configuration and overrides.

o Time-based grouping across daily, weekly, monthly, quarterly, and yearly periods.

o Forecasting, reporting, and analytics views.

• Build and maintain clean, well-structured APIs.

• Work within a modular monolith backend, contributing to shared domain logic and

internal service boundaries.

• Write efficient, readable SQL for data retrieval, aggregation, and validation.

• Ensure the correctness of financial calculations and aggregations.

• Collaborate closely with:

o Product on requirements and edge cases.

o QA on testability and bug resolution.

o Other engineers on architecture and code quality.

• Review code and contribute to technical standards and best practices.

• Participate in release planning and production readiness.
 

Required Skills and Experience

• 5+ years of professional software engineering experience.

• Strong experience building fullstack web applications.

• Solid frontend experience with:

o React.

o TypeScript.

o Modern component-based UI patterns.

• Strong backend experience with Node.js-based API services, including business logic and data validation.

Strong SQL skills, including:

o Writing complex queries.

o Working with aggregations and joins.

o Reasoning about data correctness and performance.

• Experience working with relational databases. PostgreSQL is preferred.

• Comfort working in production systems with real users and data.

• Ability to reason about edge cases, failure modes, and data consistency.
 

Nice to Have

• Experience with financial, analytics, or reporting platforms.

• Experience working in early-stage or startup environments.

• Exposure to Python is a plus, although the core backend is implemented in Node.js.
 

What Success Looks Like in the First 90 Days

• You understand the platform’s data model and core product flows.

• You ship multiple production features end-to-end.

• Your code is readable, testable, and trusted by the team.

• You proactively surface edge cases and data issues.

• Product and QA rely on you for clarity and execution

Product details: A comprehensive Engineering Document Management System (EDMS) designed to streamline the management of engineering documents and data throughout their lifecycle. It serves as a centralized repository, ensuring that all stakeholders have access to accurate, up-to-date information, thereby enhancing collaboration and operational efficiency.

Technologies:

• Languages: C#; C++; SignalR, JS/TS; ExtJS 3, Angular, XML/XSLT, JS/HTML,
  Windows applications programming knowledge
• Frameworks: COM/DCOM, .NET Framework and Core, ASP.NET, WCF, XML
  Web Services (SOAP), REST
• Win32 API, Windows Desktop applications - MFC/ATL, Windows Forms, ISAPI
  extensions
• Elastic Search, Publisher, Hyperion, SiteCache (all .NET servers and clients)
• Databases: SQL Server, Oracle, SQL Lite, MS Access,  T-SQL and PSQL
  (Oracle)
• Infrastructure: Teamcity, build pipelines and MAT-pipelines - PowerShell, Azure
  infrastructure, Nuget (work with package managers, also NPM)
• InstallShield, WiX and/or modern setup technologies (web install)
• Windows Applications registration and installation, Windows server management
  (services, sc command line)
• Windows security, Active directory and tools, Windows Networking (NetBios,
  WINS), TCP/IP networking (DNS)
• GitHub and GitHub actions

QA: in-house framework called MAT (Meridian Automated Testing), it is using .NET
Framework.

Requirements:

• 5+ years of experience in development of windows and web applications
• Strong proficiency in C++, C# and experience in listed technologies
• Experience with JavaScript
• 1+ year experience with AI tooling in software engineering space, ideally with GitHub Copilot
• Experience working with proprietary databases
• Experience with integration third party libraries and APIs
• Strong understanding of version control, security best practices, and Agile
  methodologies

• Excellent communication and teamwork skills

   

Nice to have: Some experience working with AutoCAD and verticals, Microstation, Inventor and Revit, Office object model

Responsibilities:

• Support of existing applications (bug fixes, updates/upgrades, technical improvements)
• Writing clean, maintainable, and efficient code while adhering to coding standards and
  best practices
• Active participation in code reviews, sprint planning, and design discussions
• Troubleshooting complex customer issues

Senior Full Stack Engineer — Fintech, Node.js, TypeScript, AI/LLM

Our client is an international fintech company that is actively scaling and developing its own payment products for the global market.

The company builds technology solutions for payments, financial operations, integrations with banks and payment providers, internal automation, and product infrastructure. The team combines product development, fintech R&D, payment operations, engineering, and modern AI-native approaches to building software.

We are looking for a strong Senior Full Stack Engineer who can work across backend and frontend, design scalable architecture, build reliable integrations, make independent technical decisions, and actively use AI tools in the development process.

This is not just a classic full stack role. We are looking for an engineer who can contribute to fintech product development, payment-related systems, internal automation, AI/LLM integrations, and scalable web applications.

Position

Role: Senior Full Stack Engineer
Focus: Node.js, TypeScript, Backend Architecture, Frontend Development, Fintech Integrations, AI/LLM
Company type: International fintech company
Product area: Payments, financial services, internal tools, automation, integrations
Work format: Remote / flexible schedule
Seniority: Senior / strong Senior

Mission of the Role

The main mission of this role is to help the company build and evolve reliable fintech products, scalable backend services, user-facing web applications, integrations with external systems, and AI-enabled internal tools.

We are looking for a developer who can not only implement features, but also understand product and business goals, evaluate technical trade-offs, design clean architecture, support production-ready systems, and use AI tools to improve development speed, quality, and automation.

Goals for the First 6 Months

• Understand the company’s fintech product architecture, business logic, payment flows, integrations, and development workflow.
• Take ownership of key backend and frontend areas of the product.
• Contribute to the design and development of scalable REST APIs and integrations with external services.
• Improve the quality, maintainability, and reliability of the codebase through refactoring, testing, code review, and technical documentation.
• Participate in designing authentication, authorization, user access, and secure data flow mechanisms.
• Actively use AI tools such as Claude Code, Codex, Cursor, GitHub Copilot, or similar tools to increase engineering productivity.
• Support the first AI/LLM-related integrations or internal automation initiatives.
• Identify technical bottlenecks and propose improvements in performance, security, architecture, developer experience, and scalability.

Goals for 6–12 Months

• Become one of the key technical contributors in the engineering team.
• Own complex fintech features from architecture and implementation to testing and production support.
• Help standardize engineering best practices for backend, frontend, testing, API design, integrations, and AI-assisted development.
• Contribute to AI-enabled product features, internal engineering tools, or automation workflows.
• Improve the reliability, observability, performance, and security of production applications.
• Support the development of integrations with banks, payment providers, financial services, internal systems, or third-party APIs.
• Mentor less experienced engineers and help raise the overall engineering level of the team.
• Participate in long-term technical planning and product development strategy.

Key Responsibilities

• Develop and maintain production-ready full stack web applications.
• Design, build, and support scalable backend services using Node.js and TypeScript.
• Design and implement REST APIs with proper versioning, error handling, backward compatibility, and clear API contracts.
• Develop frontend features using modern JavaScript / TypeScript and frameworks such as React, Next.js, Vue.js, or similar.
• Work with forms, validation, user input, DOM APIs, state management, and frontend performance.
• Design and implement integrations with third-party services, financial systems, payment-related APIs, and internal tools.
• Work with SQL databases, including schema design, complex queries, indexes, transactions, and query optimization.
• Implement secure authentication and authorization flows, including JWT, access / refresh tokens, OAuth 2.0, and role-based access control.
• Write and maintain unit, integration, and e2e tests.
• Participate in architecture discussions and technical decision-making.
• Conduct code reviews and help maintain a high-quality codebase.
• Analyze implementation complexity, technical risks, and possible trade-offs.
• Work closely with product managers, project managers, QA engineers, R&D specialists, payment operations, and other developers.
• Use AI tools to speed up development, improve code quality, generate technical ideas, support documentation, and automate routine engineering tasks.
• Integrate LLM APIs and AI-powered workflows into products or internal tools where relevant.
• Participate in improving CI/CD, Docker-based environments, monitoring, logging, and production diagnostics.

Required Skills and Experience

• 5+ years of commercial experience as a Full Stack Developer / Full Stack Engineer.
• Strong experience with JavaScript and TypeScript.
• Deep knowledge of Node.js and experience building production-ready backend applications.
• Strong understanding of backend architecture and scalable application design.
• Experience with Express.js, NestJS, or similar Node.js backend frameworks.
• Strong experience with at least one modern frontend framework: React, Next.js, Vue.js, or similar.
• Strong understanding of HTML5, DOM API, forms, validation, and user input handling.
• Good understanding of frontend performance and web application life cycle.
• Experience designing and developing REST APIs.
• Understanding of API design, versioning, error handling, backward compatibility, and integration patterns.
• Practical experience integrating third-party services and external APIs.
• Good knowledge of SQL: database schema design, complex queries, indexes, transactions, and query optimization.
• Strong understanding of SOLID principles, separation of concerns, and common architecture patterns.
• Experience with authentication and authorization mechanisms:
  • JWT;
  • access / refresh tokens;
  • OAuth 2.0;
  • role-based access control.
• Experience writing and maintaining unit, integration, and e2e tests.
• Understanding of application testing strategy.
• Understanding of Web Security principles, including OWASP Top 10.
• Experience with Docker and understanding of containerization.
• Basic understanding of CI/CD processes.
• Ability to make independent technical decisions and explain architectural or technology choices.
• Experience with code review and maintaining code quality.
• Good written and spoken English communication skills.

AI Engineering Requirements

• Practical experience using AI tools for software development, such as Claude Code, Codex, Cursor, GitHub Copilot, or similar.
• Good prompt engineering skills and understanding of how to work effectively with LLMs.
• Practical experience integrating LLM APIs into applications.
• Understanding of MCP — Model Context Protocol — and possible scenarios of its use.
• Understanding of approaches to building AI agents, using tools, and integrating LLMs with external systems.
• Interest in AI-assisted development, automation, internal tools, and AI-enabled product features.
• Ability to use AI tools not only for code generation, but also for debugging, documentation, testing, refactoring, architecture research, and productivity improvement.

Fintech Experience Will Be a Strong Advantage

• Experience working in fintech, payments, banking, crypto, e-commerce, financial services, or product companies.
• Understanding of payment flows, transaction processing, payment providers, banking integrations, reconciliation, or financial operations.
• Experience building secure systems that process sensitive user, financial, or operational data.
• Experience integrating multiple external services within one product.
• Understanding of compliance-sensitive environments and security-first engineering culture.
• Experience working with internal tools for operations, finance, payments, risk, support, or analytics.

Will Be a Plus

• Experience with React, Next.js, Vue.js, Redux, or similar frontend technologies.
• Experience developing or integrating MCP servers / clients.
• Experience building production-ready RAG systems.
• Experience with queues, background jobs, and asynchronous data processing.
• Understanding of caching and experience with Redis or similar solutions.
• Experience with monitoring, logging, and production diagnostics.
• Basic or intermediate DevOps knowledge.
• Practical experience with Docker / Docker Compose.
• Experience setting up CI/CD pipelines using GitHub Actions, GitLab CI, or similar tools.
• Experience with Linux, basic server administration, and troubleshooting.
• Understanding of Nginx / reverse proxy, DNS, SSL/TLS, and HTTPS.
• Experience with cloud infrastructure such as AWS, GCP, Azure, or similar.
• Basic understanding of Kubernetes.
• Experience with Python, Java, .NET, PHP, Golang, or other backend technologies.
• Experience mentoring less experienced engineers.

What We Offer

• Long-term cooperation with an international fintech company.
• Opportunity to work on own fintech products and payment-related solutions.
• Fully remote work format and flexible schedule.
• Large-scale international product development.
• Direct impact on product architecture, engineering quality, automation, and internal tools.
• Opportunity to work with modern AI tools, LLM integrations, and AI-assisted development workflows.
• Collaboration with product, engineering, R&D, payment operations, and business teams.
• Competitive compensation based on experience and technical level.
• Strong opportunities for professional growth.
• A team where ownership, strong technical thinking, initiative, and business-oriented engineering are valued.

Who This Role Is For

This role is a strong fit for a Senior Full Stack Engineer who is confident in backend and frontend development, understands architecture, security, testing, databases, and integrations, and wants to grow in fintech, AI Engineering, LLM APIs, MCP, AI agents, and modern AI-assisted development workflows.

We are looking for someone who can take ownership, think independently, communicate clearly, and help build reliable, scalable, secure, and maintainable fintech products.

GR8_TECH builds B2B iGaming platforms for operators who play to lead.

We deliver full-cycle, high-impact tech designed to scale — from seamless integrations and expert consulting to long-term operational support. Our platform powers millions of active players and drives real business growth. Call it what it is: the iGaming Platform for Champions.

With 1000+ GR8 people across locations and time zones, we don’t just ship technology — we help operators build success stories across brands, markets, and geos.

Our ambition drives us. Our people make it real.

If you’re a challenger in spirit and a champion in action — join us.
 

Why this role exists:

As a Senior Full-Stack .NET Engineer, you will play a critical role in designing, developing, and maintaining enterprise-level applications across our backend stack based on .NET, Node.js, Go and related technologies. You will lead technical discussions, mentor junior team members, and collaborate with cross-functional teams to deliver scalable and robust software solutions that meet business requirements and industry standards. This role offers the opportunity to make a significant impact, shape product direction, and contribute to the growth and success of the team.
 

What you’ll drive:

Architecture & Execution

• Design and implement scalable, efficient, and secure enterprise-level software architectures across our .NET stack.
• Write, test, and debug complex code for high-load systems with strict latency and reliability requirements.
• Deliver clean code to production in a timely manner, balancing business speed with technical excellence.
• Identify and eliminate performance bottlenecks across CPU, memory, I/O, and database layers.

Engineering Quality & Observability

• Conduct thorough code reviews to enforce strict code quality, security, and industry best practices.
• Develop and enforce testing protocols to guarantee software reliability and flawless production performance.
• Implement and monitor production observability frameworks, including logging, metrics, monitoring, and distributed tracing.
• Create and maintain concise, meaningful technical documentation for system designs and architecture.

Collaboration & Leadership

• Provide guidance and mentorship to junior and mid-level engineers, actively fostering their technical growth.
• Partner with Delivery Managers to lead and manage software development projects, ensuring predictable, high-quality delivery.
• Collaborate closely with product management, design, and operations teams to align technical execution with business goals.
• Communicate effectively with stakeholders, translating complex technical concepts into clear project updates.
   

What makes you a GR8 fit:

• Minimum 5 years of experience in a similar senior engineering role with a track record of leadership, strong technical skills, and successful project delivery.
• Deep hands-on expertise in C# and .NET (Core / .NET 6+).
• Commercial experience or a strong willingness to learn and work with Golang and Node.js.
• Experience designing and evolving high-load backend systems with strict latency and reliability requirements.
• Experience working REST API and web services.
• Strong understanding of async/await, multithreading, thread safety, memory management, and performance optimization.
• Ability to identify and eliminate performance bottlenecks across CPU, memory, I/O, and database layers.
• Experience designing and operating microservice-based systems.
• Experience working with relational and non-relational databases.
• Understanding of transactions, isolation levels, locking, concurrency, indexing strategies, and performance tuning.
• Experience working with containerized environments including Docker and Kubernetes.
• Understanding of CI/CD pipelines and automated delivery.
• Understanding of scalability, load balancing, auto-scaling, and disaster recovery.
• Understanding of production observability including logging, metrics, monitoring, and tracing.
   

Why you’ll love working here: 

Benefits Cafeteria — annual budget you allocate to:

Sports • Medical • Mental health • Home office • Languages.

Work-life & support

• Paid maternity/paternity leave + monthly childcare allowance.
• 20+ vacation days, unlimited sick leave, emergency time off.
• Remote-first + tech support + coworking compensation.
• Team events (online/offline/offsite).
• Learning culture with internal courses + growth programs.
   

Our culture & core values:

GR8_TECH culture is how we win — through trust, ownership, and a growth mindset. We move fast, stay curious, and keep it real, with open feedback, room to experiment, and a team that’s got your back.

FUELLED BY TRUST: we’re open, honest, and have each other’s backs.

OWN YOUR GAME: we take initiative and own what we do.

ACCELER8: we move fast, focus smart, and keep it simple.

CHALLENGE ACCEPTED: we grow through challenges and stay curious.

BULLETPROOF: we’re resilient, ready, and always have a plan.