Lead Developer (Expert Network)

Remote employees

About the Company and why join us

OLSYS Ltd provides full-service solutions for mid-market and enterprise organizations.

We build technology that moves businesses forward. For 19+ years, startups, investors, and enterprises have trusted our 200+ engineers to deliver software, AI, and cloud solutions that create real impact.

Our culture rewards ownership, sharpens expertise, and celebrates collaboration. Here, you work on challenges that matter: AI systems, enterprise platforms, and products used by industry leaders across finance, healthcare, retail, and beyond.

Grow your skills. Ship work you’re proud of. Build what’s next.

About the Expert Network Program

The OLSYS Expert Network Program brings together experienced technical and non-technical professionals to collaborate with OLSYS on a flexible, trust-based basis.

The program is designed to connect experts with businesses looking for innovative technology solutions while fostering knowledge sharing, technical excellence, and long-term professional relationships.

This role is part of our Expert Network, not tied to a single project or immediate opening. It is an opportunity to get acquainted, stay connected, and be among the first experts we contact when relevant opportunities arise.

Role Overview

As a Lead Developer within the OLSYS Expert Network, you will collaborate with us on demand, depending on project needs and your availability.

This role is ideal for experienced engineers and technical leaders who:

• are open to part-time or consulting collaboration,
• enjoy influencing technical decisions beyond pure coding,
• participate in pre-sales, interviews, and advisory activities,
• or are considering a future career move and want to stay connected.

Who We Are Looking For

We are looking for senior and lead-level developers with strong technical background and leadership experience across various technology stacks, including but not limited to:

• Backend: Java, .NET, Node.js, Python, Go, PHP
• Frontend: React, Angular, Vue
• Mobile: iOS, Android, Flutter, React Native
• Cloud & DevOps: AWS, Azure, GCP, Kubernetes, CI/CD
• Data & AI: Data Engineering, Machine Learning, AI-driven solutions
• Architecture: Solution, System, Cloud Architecture

Experience in system design, scalability, code quality, and team leadership is highly valued.

How You May Collaborate With Us

Depending on your interests and availability, collaboration may include:

• Consulting and technical advisory
• Participation in pre-sales activities (solution design, estimations, technical discussions with clients)
• Conducting technical interviews and expert evaluations
• Supporting project delivery and implementation
• Architecture reviews and technical audits
• Mentoring and supporting internal engineering teams

Forms of Cooperation

The Expert Network offers several cooperation models:

• Part-time collaboration

  Flexible, on-demand involvement for consulting, interviews, or pre-sales

• Full-time cooperation

  Long-term, project-based engagement when mutual interest aligns

• Advisory partnership

  Occasional expert involvement for knowledge sharing, workshops, and reviews

All cooperation is managed under B2B contracts, with remote work as the default format.

Who This Is For

This role is a great fit if you:

• Have a stable full-time role but want to stay actively involved in the industry
• Are interested in flexible collaboration and additional professional opportunities
• Enjoy working with different domains, clients, and technologies
• Want priority access to future full-time or long-term opportunities at OLSYS

Benefits of Joining the Network

• Flexible workload and collaboration formats
• Exposure to diverse projects, domains, and technologies
• Direct involvement in pre-sales and client-facing discussions
• Priority consideration for future full-time opportunities at OLSYS
• Access to a professional expert community
• Long-term collaboration with like-minded professionals

What Joining the Network Means

Joining the OLSYS Expert Network starts with an introductory conversation and mutual alignment.

There is no immediate obligation – instead, we build a trusted connection and stay in touch.

When relevant opportunities appear, you will be among the first experts we reach out to.

Yuliia Syvukha

Lead Recruiter