Senior Full-Stack Engineer – Automation & Integrations
Primary stack
Job description
About the Position
We are seeking a Senior Full-Stack Engineer – Automation & Integrations to take ownership of our email and LinkedIn automation platform and workflow builder. This role combines backend development, frontend engineering, infrastructure, and deep technical ownership of a key product area.
You will work hands-on on production systems, maintaining and extending our automation platform, supporting integrations, and improving deliverability and reliability. You will also contribute to architectural, security, and infrastructure decisions, and take responsibility for the technical health of this part of the product.
We’re looking for a product-minded engineer who cares deeply about reliability and user experience. You are a strong problem solver who can operate autonomously and take ownership of your work. You’re comfortable wearing multiple hats - from developer to infrastructure owner to technical support lead - and you communicate clearly while collaborating effectively with engineering, product, and customer success teams.
Responsibilities
- Design, develop, and maintain RESTful APIs using PHP with the Slim Framework.
- Implement the core business logic behind automation workflows, data processing, and system orchestration.
- Maintain PostgreSQL databases, including per-customer schemas, migrations, and performance optimization.
- Build and maintain React components for the workflow builder and automation interfaces.
- Manage application state and real-time updates using WebSockets.
- Work closely with product and UX to improve usability and reliability.
- Take ownership of infrastructure and operations, including configuring and maintaining AWS services.
- Develop and maintain Node.js services used for background jobs and integrations.
- Handle third-line technical support escalations, perform root-cause analysis, and implement long-term fixes.
- Contribute to security best practices, compliance, and data protection requirements.
- Focus on systems related to email and LinkedIn automation, including working with SMTP, IMAP, browser automation tools, and third-party automation providers.
Requirements
- Strong experience with: PHP (Slim Framework), Node.js, React, PostgreSQL, AWS production infrastructure.
- Solid understanding of REST APIs, asynchronous systems, and distributed services.
- Experience debugging production systems and handling live incidents.
- Comfortable working across backend, frontend, infrastructure, and support contexts.
- Ability to work independently and take full ownership of a product area.
We Offer
- An international team with enthusiastic colleagues.
- A clear career path with (international) growth opportunities.
- 26 vacation days plus an extra day off on your birthday.
- 8% holiday allowance per year.
- A solid pension plan.
- A hybrid working model: partly in the office, partly from home.
- A flexible monthly budget of €50 (for example for sports, hotel stays, meal boxes, and more).
- Access to the OpenUp platform, giving you and your loved ones easy access to professional mental health support whenever it’s needed.
- The option to work fully remote for 2 weeks per year.
- Everything you need to perform: tools, training, and support.
- Daily lunch and snacks.
- Table football, Xbox, and Mario Kart to relax during the day.
- Friday afternoon drinks and regular social events and parties.
Locations
- Kyiv, Ukraine (On-site)
- Remote (Fully remote option available)
About the Company
[Company description if present]
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