PHP Senior / Lead Developer – Email & Performance Marketing Systems

In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future.

This role requires strategic, analytical, and business-oriented thinking, as well as the ability to respond quickly to technical issues and coordinate activities in a high-scale, production-critical environment.

Project information:

• Location: Warsaw
• Work Setup: Remote or hybrid work
• Employment type: Contract of employment / B2B
• Rate: 1150 PLN/net/Day + VAT

Project scope:

• Manage and administer OVH environments (dedicated servers, VPS, DNS, backups)
• Work with and administer Assembla repositories, including version control, code reviews, and CI/CD pipelines
• Integrate with ESPs such as SARE, Elastic Email, SendGrid, Mailgun, or similar email platforms
• Configure, monitor, and optimize mass email campaigns (scheduling, throttling, IP warm-up, sender reputation)
• Design and maintain automation processes (CRON jobs, webhooks, ETL processes, workflows)
• Work with large databases (MySQL / PostgreSQL), including:
  • deduplication, data corrections, and sanity checks
  • data cleansing and segmentation mechanisms
  • query and index optimization
  • backup and data recovery mechanisms
• Respond to incidents and technical issues in real time (alerts, sending errors, integration/API failures)
• Build tools to automate marketing and performance workflows
• Design integrations with CRM/CDP systems, advertising platforms, and analytics tools
• Collaborate closely with marketing, data, and business teams to translate campaign objectives into technical solutions
• Mentor team members, perform code audits, and co-design system architecture

Requirements:

• Minimum 10 years of experience as a software developer and/or system architect
• Proven experience handling large-scale email delivery (millions of emails per day)
• Expert‑level knowledge of PHP (Symfony) in production environments.
• Hands‑on experience with OVH infrastructure, including configuration and maintenance
• Experience with Assembla or similar repository and project management systems
• Deep expertise in email marketing technologies and processes, including:
  • SARE, Elastic Email, SendGrid, Mailgun (or similar ESPs)
  • delivery mechanisms, throttling, IP warm‑up
  • deliverability and DNS (IMAP, SMTP SPF / DKIM / DMARC)
  • tracking and measurement systems
• Strong knowledge of MySQL / PostgreSQL, including:
  • record deduplication
  • optimization of large tables
  • backups, replication, and data recovery
• Experience designing and maintaining API integrations (REST / GraphQL) and automated workflows
• Excellent analytical skills with the ability to combine technical and business perspectives
• Strong collaboration, communication, and mentoring skills
• Ability to quickly diagnose and resolve issues in production environments
• Knowledge of GDPR and data security best practices for email marketing

We offer:

• Competitive compensation with flexible engagement models (employment contract or B2B)
• Real influence on architecture, processes, and technology in a key business area
• Work on large-scale data platforms and projects with direct business impact
• Access to modern tools, a professional development budget, and innovative technologies
• Flexible remote or hybrid working model
• Collaboration with experienced professionals in marketing, technology, and analytics