Stafnear

Senior Full-Stack Engineer with a strong backend focus to work on a large-scale web platform used by a significant number of customers. The system includes a site-building tool enhanced with AI features, a client-facing dashboard, and internal tooling for support operations.

About the role

The majority of your work will be focused on backend development using Node.js and TypeScript. From time to time, you’ll also contribute to frontend tasks built with React, though this represents a smaller portion of the workload.

Infrastructure and production environments are handled by a dedicated DevOps team. While you might occasionally experiment locally or in isolated environments, you won’t be responsible for managing production systems.

AI functionality is already integrated into the product via third-party services. You’ll be working with external APIs rather than building machine learning models from scratch.

Responsibilities

• Build and maintain backend services end-to-end
• Support frontend development when required for feature delivery
• Release features and ensure their stability after deployment
• Work closely with Product, Platform, and reliability teams
• Suggest and drive technical improvements alongside existing architectural guidance

Tech stack

Node.js, TypeScript, React, Redis, MySQL, PostgreSQL, Elasticsearch, messaging systems (Kafka or RabbitMQ), monitoring tools

Requirements

• Solid commercial experience with Node.js and TypeScript
• Practical understanding of React and modern frontend development
• Strong knowledge of databases and caching strategies
• Ability to troubleshoot issues across distributed systems
• Ownership mindset — comfortable delivering features from idea to production
• English for daily written communication and regular team syncs

Nice to have

• Experience with microservices and API design
• Familiarity with Docker and Kubernetes
• Performance optimization skills
• Basic understanding of Linux and networking
• Knowledge of clean architecture principles and testing practices

What’s offered

• Fully remote setup with flexible working hours
• Paid time off
• Compensation reviews twice a year
• Contractor engagement with accounting support
• Opportunity to contribute to a high-scale product and influence technical decisions

We are looking for a C++ Developer with Python experience to join a project focused on rewriting an existing Python library into C++.

The goal is to improve performance and optimize the existing solution by fully reimplementing core functionality in C++, while preserving the original logic and structure.

Responsibilities

- Rewrite an existing Python library into C++ with a focus on performance and efficiency
- Analyze the current Python codebase and replicate its functionality in C++
- Optimize and refactor logic where necessary during the migration process
- Ensure code quality, stability, and maintainability
- Collaborate with the team to validate functionality and performance improvements
- Document technical decisions and implementation details

Requirements

- 3 years of commercial experience with C++
- Good understanding of Python and ability to read and analyze existing Python code
- Experience with code refactoring or rewriting projects
- Strong understanding of algorithms, data structures, and performance optimization
- Attention to detail and ability to accurately replicate existing logic

Nice to have

Experience with low-level optimization or performance-critical systems
Experience working with large or legacy codebases
Familiarity with testing and validation approaches during migration

We are looking for an experienced FullStack Developer with strong Perl expertise to join a team working on scalable web products in the hosting domain. You will contribute to high-load systems, influence architectural decisions, and help build and maintain core platform services.

There are two main groups of projects:

1. Domain management systems (domain registration, transfer, configuration)
2. Hosting platform & infrastructure (virtual machines, server management, user dashboard, hosting services)

Responsibilities

• Design architecture for new projects with a focus on scalability, performance, and user experience
• Take ownership of deliverables, timelines, and outcomes
• Develop new features and maintain existing codebase (primarily in Perl)
• Work across the stack, including backend and frontend components
• Identify and fix bugs
• Document technical solutions
• Participate in planning, stand-ups, and retrospectives
• Collaborate with the team to improve product functionality
• Take part in code reviews, testing, and quality assurance

Requirements

- 3–5 years of experience as a FullStack Developer with strong expertise in Perl
- Experience with at least one additional language: Python / TypeScript / Bash (or similar)
- Experience building and maintaining full-stack web applications
- Strong experience with REST APIs
- Solid understanding of Object-Oriented Programming (OOP)
- Ability to work with both backend and frontend components
- Degree in Computer Science or a related field (preferred)

Nice to have

- Experience with microservices architecture
- Knowledge of networking protocols: SSH, FTP, HTTP, DNS
- Working knowledge of Kubernetes and CI/CD pipelines

We are building a next-generation product at the intersection of music, artificial intelligence, and human science — combining biometric data, AI models, and audio experiences to create something fundamentally new.

Over the past 18 months, we’ve been quietly validating the vision, assembling a world-class advisory board (ex-Google, Spotify, Pandora, along with multiple Medical PhDs).

Now, we’re entering the next phase — and looking for founding engineers who will define the technical backbone of the company.

Why This Role is Different

This is not a typical startup role.

• You won’t inherit legacy systems — you will build from scratch
• You won’t follow processes — you will define them
• You won’t be “just an engineer” — you will act as a product builder and technical owner

This is a 0→1 opportunity with real momentum behind it.

What You’ll Be Working On

• Designing and building a mobile-first product ecosystem (iOS + cross-platform)
• Developing real-time, data-driven music experiences powered by AI and biometric inputs
• Creating seamless interaction between:
  • mobile applications
  • native iOS components (including Apple Watch integration)
  • backend AI/data systems

You will work directly with product, medical, and industry experts to translate complex signals into intuitive user experiences.

Your Responsibilities

• Own mobile architecture — define structure, scalability, and best practices from day one
• Build and ship fast — from prototype to production-ready features
• Work across layers — React Native + native iOS (Swift) + API integrations
• Design high-performance UI — real-time interactions, async data flows, smooth UX
• Integrate native modules — especially for device-level features and wearable interactions
• Collaborate with R&D — bridge engineering with AI, audio, and health-tech domains

Tech Stack

• Mobile / Frontend: React Native (TypeScript), Swift (iOS)
• Backend / Cloud: AWS, PostgreSQL (RDS)
• Nice to have:
  • Audio processing
  • AI integrations
  • Health / biometric data

What We’re Looking For

• 3+ years of experience in mobile or frontend development (production apps)
• Strong expertise in React Native (JavaScript / TypeScript)
• Solid experience with native iOS development (Swift)
• Experience integrating native modules and SDKs
• Understanding of mobile architecture, state management, and scalable code design
• Experience building real-time, high-performance UI
• Ability to debug across JS + native layers + mobile environments
• Experience working with external APIs

We are looking for an experienced Senior Perl Developer to join a team working on scalable web products in the hosting domain. You will contribute to high-load systems, influence architectural decisions, and help build and maintain core platform services.

Responsibilities

• Design architecture for new projects with a focus on scalability, performance, and user experience
• Take ownership of deliverables, timelines, and outcomes
• Develop new features and maintain existing codebase
• Identify and fix bugs
• Document technical solutions
• Participate in planning, stand-ups, and retrospectives
• Collaborate with the team to improve product functionality
• Take part in code reviews, testing, and quality assurance

Requirements

• 3–5 years of experience as a Perl Developer
• Experience with at least one additional language: Python / TypeScript / Bash (or similar)
• Experience designing and building scalable web applications
• Solid experience with REST APIs
• Strong understanding of Object-Oriented Programming (OOP)
• Degree in Computer Science or a related field (preferred)

Nice to have

• Experience with microservices architecture
• Knowledge of networking protocols: SSH, FTP, HTTP, DNS
• Working knowledge of Kubernetes and CI/CD pipelines

We are looking for a JavaScript Engineer with a strong background in AdTech, specifically with an understanding of DSP/SSP ecosystems.

You will join an in-house product team working on building a custom Demand-Side Platform (DSP) with bidding agents. This role requires both hands-on engineering skills and a solid understanding of AdTech architecture, protocols, and real-time bidding systems.

What You’ll Do

• Contribute to the architecture and development of a custom DSP platform
• Design and implement bidding agents for real-time ad auctions (RTB)
• Work with high-load, low-latency systems
• Collaborate on system design decisions and AdTech integrations
• Optimize performance and scalability of bidding logic
• Help shape best practices and technical direction of the product

Requirements

• Strong experience with JavaScript / TypeScript (Node.js)
• Proven background in AdTech
• Understanding or hands-on experience with:
  • DSP / SSP systems
  • RTB (Real-Time Bidding) ecosystem
  • OpenRTB protocol (or similar)
• Experience building high-load, distributed systems
• Solid understanding of system design and architecture
• Ability to work independently and take ownership

Nice to Have

• Experience building or scaling DSP platforms
• Knowledge of bidding strategies / optimization algorithms
• Experience with:
  • Kafka / RabbitMQ
  • Redis / NoSQL databases
  • Docker / Kubernetes
  • Cloud platforms (AWS / GCP)
• Background in performance optimization and low-latency systems

What We Offer

• Work on a complex in-house AdTech product
• High level of ownership and influence on architecture
• No посредників — direct impact on the product
• Flexible working format

We are looking for a PHP Developer (Laravel) to join a product team working on a CRM system for product-based businesses, used by international clients.

This is a part-time, long-term opportunity for a developer who wants to contribute to a real product and influence backend logic and architecture, not just close tickets.

What We’re Looking For

• 3 years of experience with PHP
• Strong hands-on experience with Laravel
• Solid knowledge of PostgreSQL
• Understanding of backend architecture
• Ability to work independently and take ownership

About the Product

• CRM system designed for product-based businesses
• Helps manage orders, operations, and internal workflows

Tech Stack: PHP (Laravel), PostgreSQL, React, Docker / Kubernetes 

Example Tasks

• Implement new pricing plans within the platform
• Develop role-based access logic (e.g., order visibility by status)
• Configure automatic permission assignment for admin users
• Troubleshoot and fix system bugs
• Improve and maintain existing PHP modules

What You’ll Do

• Develop and maintain backend services using Laravel
• Design and implement APIs and business logic
• Work with PostgreSQL (queries, indexing, optimization)
• Contribute to technical decisions and improvements
• Collaborate closely with the team

Why This Role

• Work on a real CRM product used in business operations
• Impact backend logic, permissions system, and product behavior
• Join a small, fast-moving team with direct communication

• Flexible format — ideal for developers looking for stable additional workload

   

Why Part-Time

The product is built using multiple technologies.
PHP is used for admin panel and landing page modules, where the workload is focused and not full-time at the moment.

We are looking for an ML Ops Engineer who will be responsible for building and maintaining infrastructure for ML systems in production.

What you will do

• Deploy and maintain ML systems in production
• Work with model serving frameworks and ensure their stable operation
• Operate and scale GPU workloads
• Set up and maintain MLOps processes (model registry, experiment tracking, deployment automation)
• Use infrastructure-as-code approaches to manage infrastructure
• Write and maintain Python code

What we expect

• 3+ years of experience in ML Ops, Platform Engineering, or SRE for ML systems
• Experience with model serving frameworks (vLLM, TGI, Triton, or similar)
• Strong experience with containerization and orchestration, including GPU workloads
• Hands-on experience with MLOps tools (model registries, experiment tracking, deployment automation)
• Proficiency in Python
• Experience with infrastructure-as-code

Nice to have / Important

• Ability to effectively use AI coding assistants for rapid prototyping, debugging, and refactoring
• Strong engineering judgment and the ability to maintain high standards when using AI tools

We are looking for a Senior Azure DevOps Platform Architect to design and build an enterprise-grade DevOps platform used across multiple teams.

This role focuses on creating a scalable, secure, and standardized CI/CD ecosystem, rather than supporting a single team or project.

Responsibilities

• Design and implement Azure DevOps platform architecture
• Build and standardize YAML-based CI/CD pipelines
• Manage repositories, artifacts, access control (RBAC), and governance
• Define and enforce platform-wide DevOps standards

• Integrate security into CI/CD, including: SAST, SCA, DAST, secret scanning

   

Requirements

• Strong hands-on experience with Azure DevOps (pipelines, repos, artifacts, RBAC, governance)
• Experience building enterprise-level DevOps platforms (not team-level setups)
• Practical experience with DevSecOps and security integration in CI/CD
• English level: B2+

Role Scope

This is a hands-on architecture role combining platform design and implementation.
You will define standards, build core infrastructure, and drive DevOps practices across the organization.