Jobs Developers

We are looking for a  Node.js Developer (Blockchain Project).

We are building a next-generation ecosystem with a blockchain as its foundation, a non-custodial wallet, and a stablecoin protocol. After a successful demo, the project is now preparing the core components (blockchain + stablecoin) for launch. In parallel, development has started on additional secured projects, including:

• A document management system,
• A country-specific solution,
• An e-invoicing platform,
• And several other ecosystem modules ready to begin.

Tech Stack

• Node.js / TypeScript, NestJS
• PostgreSQL, Redis / Valkey
• L2 blockchain (interaction with other networks)
• Docker, Kubernetes (bare-metal & cloud infrastructure)

Responsibilities

• Write efficient, maintainable code;
• Design and implement independent, self-sufficient components efficiently;
• Participate in architectural discussions and technical decision-making;
• Identify potential technical risks and develop mitigation strategies;
• Ensure effective knowledge sharing and maintenance within the team;
• Foster a collaborative and innovative development environment;
• Perform cross code reviews with team members;
• Properly maintain documentation.

Requirements

• 3+ years of experience with server-side JS/TS;
• Solid understanding of TypeScript and JavaScript fundamentals and internals;
• Experience with Express, NestJS, or similar frameworks;
• Strong understanding of asynchronous programming, event-driven architecture, and non-blocking I/O;
• Understanding of different types of scaling and microservice architectures in various implementations;
• Hands-on experience with Web3.js or Ethers.js for interacting with Ethereum or other EVM-compatible networks;
• Understanding of smart contracts;
• Familiarity with popular blockchains such as Ethereum, Binance Smart Chain, or Layer 2 solutions;
• Expertise in data structures, algorithms, and software design patterns;
• Solid understanding of software architectural patterns;
• Experience with relational databases (especially PostgreSQL);
• Deep experience with SQL (including schema/query design and optimization);
• Experience with ORMs;
• Familiarity with Docker, containerization, and orchestration tools;
• Strong analytical and problem-solving skills;
• Proficiency in writing unit, integration, and end-to-end tests;
• Conversational English.

Will be a plus

• Familiarity with DevOps practices and Infrastructure-as-Code (IaC) tools;
• Understanding of consensus algorithms, cryptographic principles, and decentralized applications (dApps);
• Familiarity with Matter Labs’ zk stack;
• Experience in the FinTech domain;
• Understanding of different rollup technologies;
• Openness to technology stack changes and adaptability.

We offer:

• Competitive compensation;
• Social package (24 working days of annual leave, 5 paid sick days);
• Flexible working hours;
• Challenging projects in diverse business domains and a variety of tech stacks;
• Personal development and professional growth opportunities;
• Work with talented, ambitious and family-feel teams;
• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes;
• Compensation for your professional certification & support for your learning activities;
• Opportunity to choose IT equipment you like;
• Corporate social responsibility.

Responsibilities:

• Creating products logic following the best practices of the domain development, and also taking into account user needs and product domain context;
• Studying user needs and suggest implementation ways that will work the best;
• Deepening and evaluating product increment requirements in collaboration with a cross-functional squad including tech and proxy product owners;
• Coming up with new initiatives within your area to improve performance;

• Taking a part in implementing, maintaining, and improving existing products.

   

Requirements:

• 2+ years of Laravel development experience (on commercial projects);
• Experience with Vue.js or React.js would be a plus;
• Strong understanding of OOP fundamentals and adherence to a coding standard;
• Experience with SQL or NoSQL databases;
• Practice experience with building REST API services;
• Practice experience with Docker;
• Experience in working in a product-focused team;
• English (Intermediate and higher);
• Scrum process & Agile approach understanding;
• Proactive position and desire to suggest new ideas.

Expectations:

• High level of efficiency and productivity, proactive approach;
• On-time delivery of projects/tasks and positive feedback from clients/squad;
• Technical and personal growth.

We offer:

• Regular result-based salary reviews;
• Comfortable working hours (10-19 Kyiv time zone);
• Bonus system;
• Established product-focused environment;
• Range of tasks, from quick and simple to challenging investigation to run;
• Cheerful & dynamic environment;
• Friendly and open-minded team;
• Virtual workspace with perspective to move into one of the offices;
• Mentorship;
• Attractive social package (unlimited and paid sick days, fully paid vacation, birthday day off, etc;)
• Sport and English classes discounts.

Hiring steps:

• First interview with the Recruiter;
• Technical interview with the Squad Lead;
• Job Offer.

We are seeking a Senior Frontend Engineer who cares deeply about performance, pixel-perfect implementation, and developer experience. You will lead the development of our client-facing applications, leveraging the power of Next.js (App Router) and Payload CMS to build dynamic, content-rich, and highly scalable digital experiences.

You won't just be "slicing designs"; you will be architecting our frontend design system, making critical decisions about server-side vs. client-side rendering, and ensuring our CMS implementation is flexible for content editors while remaining type-safe for developers.
 

The Stack

• Core Framework: Next.js 14+ (App Router, Server Components)
• Language: TypeScript (Strict Mode)
• CMS: Payload CMS (Self-hosted / Cloud)
• Styling: Tailwind CSS + Radix UI / Headless UI
• State/Data: React Query (TanStack Query) / Zustand
• Testing: Cypress (E2E) & Jest/React Testing Library
• Package Manager: pnpm / Bun

Key Responsibilities

• Architecture: Lead the migration/development of applications using Next.js, optimizing for Core Web Vitals, SEO, and hydration performance.
• CMS Integration: Design and implement complex content models in Payload CMS, ensuring a seamless editing experience for non-technical teams and robust type generation for the frontend.
• Component System: Build and maintain a reusable, accessible component library using Tailwind CSS. We value consistency and utility-first CSS principles.
• Type Safety: Enforce end-to-end type safety (from CMS content to frontend props) using TypeScript and Zod.
• Performance: Proactively monitor bundle sizes, image optimization, and server response times.
• Collaboration: Work closely with Backend Engineers to define API contracts and with Designers to bridge the gap between Figma and reality.

Technical Requirements

• Next.js Mastery: Deep understanding of the App Router, Server Actions, Incremental Static Regeneration (ISR), and SSR vs. CSR trade-offs.
• Payload CMS: Experience configuring Payload collections, globals, and blocks. You know how to extend Payload with custom fields or hooks.
• Tailwind Expert: You know how to configure tailwind.config.js for theming, write custom plugins, and avoid "class soup" by componentizing effectively.
• TypeScript: You don't use any. You are comfortable with generics, utility types, and inferring types from CMS schemas.
• Modern React: Proficiency with Hooks, Context API, and composition patterns.
• State Management: Experience managing server state (React Query) vs. global client state (Zustand/Context).

Nice-to-Have

• Docker: Experience containerizing Next.js and Payload applications for deployment.
• Storybook: Experience documenting UI components in isolation.
• Monorepo Tools: Familiarity with Turborepo or Nx.
• Animation: Experience with Framer Motion or GSAP for polished interactions.
• Open Source: Contributions to the Next.js or Payload CMS ecosystems.

What We Offer

• Competitive Salary: We value your expertise and pay accordingly.
• Remote-First Culture: Work from where you are most productive.
• Tech-Forward: We are constantly evaluating and adopting the best tools for the job (like the stack mentioned above).
• Professional Development: Budget for courses, conferences, and certifications.
• Long Term Position: Stable and long term position.
• Flexible and Secure Payments: Via deel.com 

The Calendars builds an iOS app used by millions of people every day to plan their time. We’re looking for an iOS Engineer who wants to work on a large-scale product, contribute to the development of key features, and build a high-quality user experience as part of a strong team.

What you will do:

• Implement, document, maintain existing application functionality.
• Enhance the application's responsiveness. Identify and rectify bottlenecks and bugs.

• Collaborate with UX/UI designers to transform design mockups and wireframes into fully functional and visually appealing iOS application

   

About you:

• Experience developing applications using Swift and Objective-C.
• Understanding of iOS design principles, interface guidelines, and best practices.
• Strong understanding of SOLID, OOP patterns, concurrency patterns.
• Proficient in memory management and performance tuning.

• Comfortable working with UIKit, SwiftUI, Foundation, Combine, GCD, Swift Concurrency.

   

Would be a plus:

• Experience of working with calendar-related applications e.g. time zones, recurreint events, etc.
• Intstuments
• CI/CD
• StoreKit

What you will get at Readdle:

• Customer-centric culture. We put our users at the heart of everything we do. Every team member has the opportunity to engage directly with customers, gaining insights that shape meaningful, delightful experiences for millions worldwide.
• Relentless growth. We’re committed to mastery in our craft. We take ownership of our work, decisions, and outcomes, and we see feedback as a catalyst for growth. Every challenge is an opportunity to learn, evolve, and raise the bar.
• Exceptional people, exceptional team. Our greatest strength is our people. We care deeply about each other, work transparently, and celebrate collective success. Together, we build an environment where everyone can do their best work and grow beyond their potential.
• Real impact. We design products that truly matter. Our focus is on delivering tangible value, simplifying complexity, pushing boundaries, and continuously improving how we build and deliver solutions to our users.
• Culture of innovation. We embrace curiosity and creativity in everything we do. Fresh ideas are not just welcomed, they’re expected, celebrated, and turned into real innovations that shape the future of our products and company.

We are seeking a highly skilled PHP Developer to join our dynamic team, specializing in building and maintaining robust, high-performance web applications. If you have a strong background in Symfony, MySQL 8.0, Redis, MongoDB, and experience managing high-load and big data projects, we want to hear from you!

Responsibilities:

• Develop, test, and maintain web applications using PHP and Symfony.
• Design and optimize complex databases, primarily MySQL 8.0, ensuring high performance and scalability.
• Work with MongoDB for managing and optimizing unstructured data storage.
• Integrate and manage message queues using RabbitMQ for asynchronous processes.
• Utilize AWS cloud services (EC2, S3, RDS, etc.) to deploy and manage applications in a scalable, secure environment.
• Collaborate with cross-functional teams to define, design, and ship new features.
• Identify and resolve performance bottlenecks and bugs.
• Ensure the best possible performance, quality, and responsiveness of applications.
• Stay updated with the latest industry trends and technologies to bring innovative solutions to the team.

Requirements:

• Proven experience as a PHP Developer with a deep understanding of the Symfony framework.
• Expertise in MySQL 8.0, including performance optimization, indexing, and query optimization.
• Experience with message queue systems, particularly RabbitMQ.
• Hands-on experience with AWS services and infrastructure.
• Solid understanding of high-load and big data application development.
• Strong analytical and problem-solving skills, with a keen eye for detail.

Preferred Qualifications:

• Experience with containerization and orchestration tools (Docker, Kubernetes).
• Previous experience in a DevOps environment.
• Understanding of front-end technologies (JavaScript, React, Vue.js) is a plus.

Established in 2004, ALLSTARSIT was founded with a clear vision: to enhance the landscape of global IT employment by bridging the gap between companies and skilled professionals. The core belief was that assembling a team shouldn't be hindered by geographical constraints. Fast forward to the present day, ALLSTARSIT stands as an international outstaffing service provider committed to change the way businesses recruit, compensate, and oversee top talent worldwide. 

With operational hubs scattered across Europe, Asia, and LATAM, and its headquarters situated in San Francisco, US, the company boasts a workforce of over 1,000 adept professionals. Spanning across more than 20 countries, ALLSTARSIT offers a diverse range of skilled employees across various verticals, including AI, cybersecurity, healthcare, fintech, telecom, media, and so on.

About the Project

Our client is a fast-growing global tech company that builds a high-impact web platform used by millions worldwide. Their product powers websites at massive scale, with a strong focus on performance, innovation, and user experience. The company offers a collaborative, product-driven environment where engineers have real influence on architecture and features, working with modern technologies on solutions that shape how the web is built today.

Hybrid format, office in Warsaw.

Challenges:

• Product as a Platform - Elementor is a platform on which thousands of applications have been built. You’ll face the challenge of developing a reliable platform to support those businesses.
• You’ll design and write high-quality components to enhance system capabilities while maintaining system quality and stability.

• You’ll work on a complex and technical product with many different use cases that is used by millions of web sites and customers.

   

Required skills:

• 6+ years of proven experience as a full-stack developer, with 4 years of proven experience working with web applications using React or pure JavaScript (ES6+)
• 3+ years of experience with CSS
• 3+ years of experience in Node.js/ Typescript
• 2+ years of experience with Nest.JS
• Experience with Databases - MySQL is a Must
• Experience with building scalable backend services -Must
• Experience with the adoption of AI-powered development tools (e.g., GitHub Copilot, ChatGPT for coding assistance) - Must
• Experience and deep understanding of web application development and the web cycle, including:

1. Writing unit tests & E2E tests (Playwright experience - an advantage)
2. Avoiding security vulnerabilities

• Experience with cross-browser compatibility
• Strong English language communication skills
• Experience with Elementor - an advantage
• Having built or maintained an open-source project - an advantage

• Experience with SCSS - an advantage

   

Scope of work:

• Plan and develop new user-facing products and features
• Participate in the technical design of features
• Ensure the technical feasibility of UI/UX designs
• Maintain the stability of the system using automated tests
• Collaborate with other team members and stakeholders

Ready to roar? Junior Fullstack Developer wanted! (.NET + React)

The Bliscore Story: While others just "outsource," we build. We are a Ukrainian product company that treats architecture like art and processes like a well-oiled machine. Our B2B SaaS solutions empower businesses in the US and Europe, and we need a fresh pair of eyes (and hands!) to help us scale even further.

The Mission: You won’t be just a "junior" here. You’ll be a co-creator of a massive SaaS platform.

• Challenges: Scalability, modular architecture, and high-load stability.

• Vibe: Less "corporate red tape," more "engineering excellence."

   

What’s in your toolkit?

• Backend: You know your way around .NET / C# and aren't afraid of complex logic.
• Frontend: React.js + TypeScript are your best friends.
• Data: You understand how to talk to MS SQL or PostgreSQL.
• Flow: You’ve used Git and have a clue about how CI/CD works.

• Talk: Your English (B1–B2) is ready for real conversations.

   

Extra points for knowing what Docker or Azure is, or if you’ve ever dreamt of Microservices.

Why you’ll love it here:

• 🏢 Lviv Office Life (The Hybrid Way):  We’re looking for someone who wants to be part of the local community.
• 🍲 Fuel for your brain: Forget about lunch boxes! We provide free meals for our team in the office. 
• 🛠 Tech & Growth: High-end hardware, internal tech talks, and we’ll even pay for your professional certifications.
• 📈 Impact: You’ll influence technical decisions from day one. Your voice matters.
• 🛡 Stability: Full accounting support, paid vacations, and sick leaves.

Join a US-based, mission-driven tech company building a platform that connects nonprofits and small businesses with skilled volunteers.
This is a key technical leadership role with full ownership of architecture, engineering standards, and long-term technical direction.

Who we’re looking for (US-based ONLY)

‼️ This role is open exclusively to candidates who are physically located in the United States.

Must Have

• 5+ years of experience in software engineering
• 2+ years in a Tech Lead / Software Architect role
• Strong hands-on expertise with Python (Django) and React
• Proven experience designing scalable architectures and making core technical decisions
• Solid knowledge of PostgreSQL, API design, system integrations
• Strong background with AWS (Render is a plus)
• Confident with DevOps practices: CI/CD, IaC, monitoring
• English level B2–C1
• Structured, proactive, able to mentor engineers and set technical standards
• Ready to act as the key technical owner of the platform

Nice to Have

• Experience with SaaS / platform architecture
• ElasticSearch experience
• AI/ML or OpenAI API integration experience
• Serverless or microservices orchestration
• Background in nonprofit or impact-driven projects

What you’ll do

• Own the platform’s architecture and long-term technical direction
• Spend ~70% of your time on hands-on development
• Build and optimize APIs, data flows, and integrations
• Lead integrations with OpenAI API, Klaviyo, SendGrid
• Design and maintain CI/CD pipelines and cloud infrastructure (AWS, Render)
• Ensure performance, scalability, and reliability
• Conduct code reviews and mentor the engineering team
• Collaborate closely with product and design to shape technical solutions

We Offer

• Full ownership of the platform’s technical architecture
• High autonomy and trust — no micromanagement
• Work on a product with real social impact
• 100% remote, flexible schedule
• Modern stack with freedom to improve and evolve it
• Direct influence on product and technical roadmap

About the Company

US-based impact-driven tech platform connecting nonprofits and small businesses with skilled volunteers.
This role is the central technical pillar of the team.

Location: USA only
Format: 100% Remote
Schedule: Flexible, with one recurring sync at 4:00 PM EST

The company delivers software solutions that help IT transform digital enterprises for the ultimate competitive business advantage. We have worked with thousands of leading companies to create and deliver powerful IT management services. From mainframe to cloud to mobile, we pair high-speed digital innovation with robust IT industrialization—allowing our customers to provide amazing user experiences with optimized IT performance, cost, compliance, and productivity. We believe that technology is the heart of every business and that IT drives business into the digital age.

Requirements:
• Education: Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• Experience: 8+ years in software development, with strong experience in cloud-native applications and DevOps practices.
• Technical Expertise:

 Must-Have Skills:

– Containerization & Orchestration: Extensive experience with Docker and Kubernetes.
– CI/CD & Automation: Proficiency with Jenkins, Helm, and Ansible.
– Scripting: Strong hands-on skills with Shell scripting.

Good-to-Have Skills:

– Programming & Scripting: Knowledge of Python and Java for backend services and automation.
– Infrastructure as Code (IaC): Experience with Terraform or CloudFormation.

• Soft Skills:
– Proactive and energetic with a passion for continuous learning and innovation.
– Strong problem-solving and analytical abilities.
– Excellent communication and collaboration skills.

Preferred Qualifications
• Experience with cloud platforms such as AWS, Azure, or GCP.
• Knowledge of microservices architecture and RESTful APIs.
• Exposure to DevSecOps practices and security scanning tools.
• Familiarity with monitoring and logging tools (e.g., Prometheus, Grafana, ELK stack).

Job responsibilities:

1. Product Development & Automation
– Design, develop, and optimize cloud-native applications using Docker and Kubernetes.
– Implement automation scripts using Ansible and Helm for deployment and configuration management.
– Develop and maintain CI/CD pipelines using Jenkins to ensure efficient and reliable software delivery.
– Write and maintain Shell scripts for automation, monitoring, and maintenance tasks.

2. Cloud Infrastructure & Containerization
– Deploy, manage, and scale containerized applications on Kubernetes (EKS/AKS/GKE).
– Ensure high availability, security, and scalability of cloud-native services.
– Implement best practices for container security, resource optimization, and disaster recovery.

3. Collaboration & Agile Practices
– Collaborate with Product Managers, Architects, and DevOps teams to align development with business goals.
– Participate actively in Agile ceremonies including sprint planning, daily standups, and retrospectives.
– Mentor junior developers, fostering a culture of technical excellence and continuous learning.

4. Performance Optimization & Troubleshooting
– Identify performance bottlenecks and optimize application and infrastructure components.
– Troubleshoot and resolve complex issues in cloud deployments, CI/CD pipelines, and microservices.
– Ensure proper monitoring, logging, and alerting for application health and performance.

5. Continuous Improvement & Innovation
– Proactively identify opportunities for automation, cost optimization, and process improvements.
– Stay updated with the latest trends in containerization, cloud-native technologies, and DevOps practices.
– Experiment with emerging tools and frameworks to enhance product capabilities and developer productivity.

The client is an innovative global fintech leader behind USDT, the world’s largest and most widely used stablecoin.

We are looking for a Middleware Engineer to work across the JavaScript/TypeScript layer, connecting modern applications with local AI inference engines and distributed systems. This role sits between product development and platform engineering, focusing on middleware, SDKs, and application layers that make local AI usable, secure, and scalable.

Responsibilities:

• Design, build, and maintain React-based applications (Expo / React Native / Electron)
• Develop clean, modular architectures using TypeScript across the stack
• Implement local-first / offline-first application logic and secure local data storage
• Integrate applications with local AI inference engines, SDKs, and real-time systems
• Work with REST APIs, WebSockets, RPC, and streaming data flows
• Contribute to middleware, SDKs, and JavaScript bindings bridging apps with native and C++ components
• Build or extend native mobile modules (iOS / Android) when required
• Optimize performance for resource-constrained devices
• Write production-quality code with unit and end-to-end tests
• Collaborate in a fully remote, cross-time-zone team

Requirements:
Must have

• 5+ years of experience in fullstack software development
• Expert-level proficiency in JavaScript and TypeScript
• Strong experience with React (web, mobile, or desktop)
• Experience building offline-first or local-storage-heavy applications (e.g. SQLite)
• Proven experience with distributed systems or event-driven architectures
• Strong understanding of real-time communication (WebSockets, streaming, RPC)
• Solid knowledge of networking, security, and production best practices
• Experience with databases, data modeling, and performance optimization
• Hands-on experience with containerization and orchestration (Docker, Kubernetes)
• Ability to work independently and communicate effectively in a remote environment

Nice to Have

• Experience with peer-to-peer technologies (libp2p, Hyperswarm, WebRTC)
• Familiarity with AI/ML inference APIs or OpenAI-compatible endpoints
• Experience integrating crypto or payment SDKs
• Background in AI platforms, SaaS, or developer tooling
• Knowledge of GPU resource management, ML infrastructure, or WebAssembly
• Contributions to open-source projects

We are offering:

• Transparent strategy and thoughtful management that keep everyone aligned
• Space for personal growth and career development without limits
• A culture of continuous learning: internal courses, workshops, and English classes twice a week
• Skill up events where we share experience and stay on top of trends
• Competitive perks: flexible schedule, a strong compensation package, support for professional certifications, and generous vacation policy
• Team spirit that thrives through regular events, gatherings, and celebrations

Role Overview

We are looking for a Senior PHP Backend Developer with 5+ years of experience to join our core engineering team. You will be a key architect of our backend systems, moving beyond traditional development to embrace an AI-first workflow. You aren't just a coder; you are an owner who takes full accountability for the application lifecycle, from the first line of a unit test to the final deployment on Google Cloud.

Our Proposed Tech Stack

• Language & Framework: PHP 8.4+ and Laravel 12.
• Testing: Pest PHP or PHPUnit (Feature & Unit testing).
• Cloud Infrastructure: Google Cloud Platform (Cloud Run, Cloud SQL, Cloud Build).
• AI Tooling: Gemini-CLI, GitHub Copilot, Codex, and Cursor for agentic development.
• Database: PostgreSQL / MySQL (Managed via Cloud SQL).

Key Responsibilities

• High-Performance Backend: Architect and maintain scalable server-side logic using Laravel, focusing on clean code, design patterns, and high-concurrency handling.
• AI-Native Workflow: Integrate Gemini-CLI and Codex into your daily terminal workflow to automate boilerplate, refactor complex legacy logic, and generate migration scripts.
• Total Test Coverage: Implement a "Test-First" culture. You will write comprehensive Unit Tests for isolated logic and Feature Tests (Integration) to ensure API endpoints and business flows are bulletproof.
• Cloud Ownership: Manage and optimize the application on Google Cloud. This includes configuring Cloud Run for auto-scaling, managing Cloud SQL instances, and setting up IAM roles for security.
• CI/CD & DevOps: Build and maintain automated pipelines using Cloud Build or GitHub Actions, ensuring every commit is automatically tested and deployed to staging/production.
• Ownership Mentality: You take "Extreme Ownership" of the codebase. This means proactive monitoring (Google Cloud Observability), identifying bottlenecks before they hit production, and refactoring for long-term health.

Technical Requirements

• Experience: 5+ years of professional backend development with a deep mastery of PHP and the Laravel ecosystem.
• TDD Champion: Strong commitment to Test-Driven Development. You must be proficient in writing Unit and Feature tests before implementation to ensure high-quality, bug-free code from day one.
• GCP Knowledge: Hands-on experience with Google Cloud services, specifically containerized deployments (Docker/Artifact Registry) and serverless environments. Important!!!
• AI Mastery: Demonstrated ability to use AI Agents (like Cursor) and terminal-based AI tools (Gemini-CLI) to accelerate development speed by at least 2x.
• Database Design: Expert level at Eloquent ORM, database indexing, and query optimization to handle large-scale datasets.
• Security Mindset: Knowledge of OWASP principles, secure API design, and data encryption within a cloud environment.

Bonus Points

• Experience with Laravel Pulse or Horizon for real-time monitoring.
• Familiarity with Spatie packages or advanced Laravel architectural patterns (Actions, DTOs).
• Contributions to open-source PHP libraries or AI-related dev tools.

Why Join Us?

We offer a "zero-friction" development environment. We provide the latest AI subscriptions and Google Cloud credits for experimentation. We value developers who treat the application as their own product, giving you the autonomy to make high-level architectural decisions.

N-iX is looking for a dedicated and skilled SAP ABAP Software Engineer to join our client’s dynamic team. In this role, you will be able to work with one of the leading banks of Ukraine with one of the biggest networks of branches and ATMs. 

Requirements:

•  3+ years of experience as a SAP ABAP Engineer
• Complex ABAP programming, testing, and debugging
• Close communication with functional teams to build professional solutions
• Experience in ABAP for SAP NW 7.5  (ABAP Objects, ABAP Reports  using ALV, ABAP Rest,  HTTP Calls, etc.)
• Knowledge of ABAP  OOP, RFC, BAPI, BADI, User Exits, and Enhancements
• Experience as a SAP BW Engineer, BW7.5 data warehousing solutions
• Ukrainian language, Advanced or higher.

Responsibilities:

• Participate as an SAP ABAP Developer in projects for our existing customer
• Development of business logic in various implementations of SAP systems
• Integrate SAP with external systems via RFC, Rest, etc.
• Enhancing out-of-the-box SAP functionalities according to Customer requirements
• Prepare Technical specifications of development objects
• Work with other teammates to deliver SAP projects and integrations with external systems

Will be a plus:

• Experience in SAP Fiori and/or UI5 
• Knowledge of SAP NetWeaver Gateway and OData services
• Experience in AM (is Application Management?)
• English language from the Intermediate level 

Project Overview
We are looking for a Regular Web Visualization Developer to join our team and work on interactive, web-based visualization tools for technical and geospatial data in the oil and gas domain. The role is focused primarily on frontend and 3D web visualization, with exposure to backend integration and cloud-based environments as part of a larger engineering team.

This position is ideal for a strong frontend developer with experience or strong interest in WebGL and Three.js who wants to grow into a specialized visualization/graphics engineer role.

Key Responsibilities
• Develop and maintain interactive web-based visualization tools using Angular, TypeScript, and Three.js
• Implement and optimize 3D scenes and visual components for performance and usability in the browser
• Collaborate with backend engineers to integrate visualization components with existing APIs and data services
• Work closely with domain experts (geologists, engineers, analysts) to translate technical data into clear visual representations
• Participate in code reviews and contribute to improving frontend architecture and best practices
• Support deployment and operation of web applications in cloud-based environments (AWS or Azure)

Mandatory Skills
Angular, TypeScript, Three.js, WebGL

Required Experience & Qualifications
• 3+ years of experience in frontend or web visualization development
• Practical experience with Angular and TypeScript in production projects
• Hands-on experience or strong fundamentals in Three.js and WebGL
• Basic understanding of performance optimization for web applications
• Familiarity with working with REST APIs or similar backend services
• Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent practical experience)
• Good communication skills and ability to work in a collaborative team environment

Nice-to-Have
• Exposure to technical or scientific visualization (GIS, 3D data, dashboards, simulations)
• Basic understanding of cloud platforms (AWS or Azure)
• Interest in graphics rendering concepts and performance tuning
• Familiarity with Unity, VR, or other 3D tools

Languages
English: B2 (Upper Intermediate)

SaaS Platform · React + Fastify · PostgreSQL

About the Project

We’re building a sophisticated AI-powered matching and analytics platform that uses multi-dimensional profiling and advanced algorithms to optimize decision-making.

The product has a validated prototype and real traction. We’re now moving into production hardening and scale, and we’re looking for a senior developer to take ownership of the backend architecture while actively evolving the frontend.

A core part of this role is working AI-first: we expect you to use Claude Code as a primary development tool, not as an experiment or side-assist.

The Role

You’ll design and implement the full production backend for our React-based SaaS platform, replacing mock data with real infrastructure:

• databases
• authentication
• APIs
• AI integrations
• deployment pipelines

You’ll also contribute directly to the frontend where needed.

Claude Code is a hard requirement.

We expect you to be comfortable (or explicitly motivated) to:

• scaffold systems with AI
• refactor and evolve large codebases using AI assistance
• co-design architecture with Claude
• use AI for documentation, tests, migrations, and reasoning

This is an AI-augmented engineering role, not a traditional “write everything by hand” position.

What You’ll Build

Backend Architecture

• Fastify REST API

  High-performance Node.js framework with TypeScript-first design and built-in validation

• Database

  PostgreSQL 15 with Prisma ORM (type-safe queries + automated migrations)

• Authentication & Authorization

  JWT with refresh tokens, httpOnly cookies, and role-based access control

• Caching Layer

  Redis for sessions and performance optimization

• Validation & Types

  Shared Zod schemas between frontend and backend

• API Design

  RESTful endpoints with structured error handling and consistent responses

Infrastructure & DevOps

• Monorepo Setup

  pnpm workspaces separating frontend, backend, and shared packages

• CI/CD

  GitHub Actions with automated tests, security checks, and deployments

• Environments

  Isolated staging and production environments

• Deployment
  • Frontend: Vercel (CDN + edge)
  • Backend: Railway or Supabase (auto-scaling)

• Containerization

  Docker-based local and production environments

Integrations

• OpenAI API

  Document parsing, analysis, and intelligent matching logic

• Email Services

  Resend or SendGrid with template-driven transactional emails

• File Storage

  Secure uploads via Supabase Storage or AWS S3

• Monitoring & Analytics

  Sentry (errors) and PostHog (product analytics)

Testing & Quality

• Backend Testing

  Vitest for unit and integration tests with test databases

• End-to-End Testing

  Playwright covering full user workflows

• Code Quality

  ESLint, Prettier, Husky pre-commit hooks

• API Documentation

  Auto-generated OpenAPI specs from Zod schemas

Required Experience

• 5+ years of professional full-stack development
• Strong experience or strong willingness to work AI-first
• Hands-on experience with Claude Code for real production work
• Advanced React and modern frontend practices (React 19, hooks, Zustand)
• Node.js backend development (Fastify preferred, Express acceptable)
• PostgreSQL schema design, indexing, and performance optimization
• Prisma ORM or similar type-safe database tooling
• RESTful API design with authentication (JWT, OAuth concepts)
• Git-based workflows and CI/CD pipelines
• Testing across the stack (unit, integration, E2E)

Tech Stack

Frontend (Existing)

• React 19, Vite 7, React Router 7
• Ant Design 6, Zustand 5
• React Flow, Recharts, @dnd-kit
• Vitest, Playwright

Backend (Developing)

• Fastify
• PostgreSQL 15 + Prisma
• Redis
• Zod
• JWT authentication
• Helmet (security)

Infrastructure

• pnpm workspaces (monorepo)
• Docker + docker-compose
• GitHub Actions
• Vercel (frontend)
• Railway / Supabase (backend)

Third-Party APIs

• OpenAI GPT-4 API
• Resend / SendGrid
• Supabase Storage
• Sentry

Highly Desirable

• Deep Fastify experience
• Prisma with complex relational schemas
• Monorepo experience (pnpm, Yarn workspaces, Turborepo)
• Production TypeScript at scale
• Ant Design customization
• Docker for both dev and production
• OpenAI / LLM integration experience
• Vercel and Railway deployments
• Database migration strategies
• Strong opinions on AI-assisted development

Required Skills (Experience Level)

• Node.js (Fastify / Express) — 4+ years
• TypeScript — 4+ years
• PostgreSQL (schema design, indexing, optimization) — 3+ years
• Prisma ORM — 2+ years
• React (hooks, functional components) — 3+ years
• Zustand or similar state management — 1+ year
• REST API design & backend architecture — 4+ years
• Authentication (JWT, refresh tokens, RBAC) — 3+ years
• Docker (local & production workflows) — 2+ years
• CI/CD (GitHub Actions or similar) — 2+ years
• Monorepo workflows (pnpm / yarn workspaces) — 1+ year
• Testing (Vitest / Jest / Playwright) — 2+ years
• OpenAI / LLM API integration — 1+ year
• Claude Code (AI-assisted development workflows) — 1+ year

We are looking for a full-stack that will help us to bring our educational web technology Classtime to the next level. You'll be working with a distributed team (US, Switzerland, and Ukraine). 

Our Product

Classtime enables teachers to create questions on an internet-connected device (mobile phone, tablet, PC/notebook), push it to all student devices and track the performance of a class immediately in a class session. The teacher receives valuable information about the individual student's performance and can intervene as deemed appropriate, thereby improving the overall learning progress of the class. By answering the questions, all students are fully engaged, which can also be analysed after class and even over time to measure a single student's or the entire class's development.

Classtime is trusted by more than 400,000 teachers and various clients (schools / businesses) globally.

Спільнота Classtime в Україні: https://www.facebook.com/groups/classtimeua/

Responsibilities

- Implement new features and user interfaces of the Classtime Apps for students and teachers;

- Architect efficient and reusable front-end systems that drive complex web applications;

- Create APIs and implement business logic in micro-services;

- Collaborate with Product and Graphic Designers to deliver compelling user-facing products;

- Manage your own time, and work well both independently and as part of our SCRUM team;

- Launch, iterate and make a difference. Provide full-stack coding expertise, and be ready to make Classtime better for our users;

Must-Haves

Experience with React, Redux, OOP;

1+ years of JavaScript or Typescript experience and strong knowledge of ES6 or Typescript;

1+ years of backend development;

Nice to have

- Experience programming in Typescript.

- Experience programming in Python, Java and Kotlin;

- Experience in building responsive mobile-first web application;

- Strong sense of web design and fundamentals of user experience;

- Experience with implementing micro-services;

Classtime's Stack

- React, Redux, Redux Saga, TypeScript;

- HTML, SCSS, JSS;

- Webpack;

- Kotlin, Microservices, Django;

- Deployed on the Google Kubernetes Engine;

- Third-parties: Pusher, Cloudinary, Elastic Search;

Compensation & Location

Market-oriented salary. Remote office. We have several teammates in Kyiv. You must currently live in Ukraine.

Classtime Values

Curiosity - Always continue to experiment and learn.

We have to focus on our client, the teacher. We question critically, we listen carefully and experiment creatively with new ideas. If you love to understand the unknown, then continue, because you now know 25% of our values.

Impact - Always focus on generating value for society.

We don't pride ourselves with large employee numbers, but rather with exceptional impact per team member. We expect exceptional ownership and responsibility, not only for your tasks, but for our impact on society. Don't go improve the next ad platform, help us in our attempt to shape the future of education. If you can throw a punch with impact, then use both fists, not only 50%.

Perseverance - Always keep pushing yourself.

We are a distributed team, working across several time zones. Just like us, you can live in Los Angeles, Kyiv, Zurich, or anywhere you want. Our home has many names: Google Drive, Google Hangouts, Github, InVision, Slack, etc. We don't excel through pressure, but through alignment and discipline. We don't require you to run with us forever, but don't expect a half-marathon either. Just keep in mind: pain is inevitable, suffering is not. Persevere. You're already at 75%.

Honor - Act with integrity, always help a friend or rival.

Education is not a battle against each other, but for each other. Technology is already having a great impact on education. Why do we care? Because we believe that creative, curious people will honor future generations and learn to solve the world's biggest challenges for the long-term. This is what Classtime is all about – and we will relentlessly strive for our goals and keep pushing the frontiers of education. With our friends and “co-opetition”. This is 100% Classtime.

Get in touch with us now, let's talk!

Interview Process

1. Pre-assessment - Show that  you know the basics.
2. Technical Interview - Your opportunity to demonstrate your skills!
3. Personal Interview - Let's see if you are a good fit to the company.