Remote-First Backend Engineer - Fintech Impact & Ownership

PeopleForce; Polska; Hybrid; PLN 356,000 - 514,000; Full time

Benefits offered by this job

Remote-first policy

Global team collaboration

Wellbeing: paid time off

Job summary

Weltrade, a reliable international Fintech company, seeks a PHP-focused software engineer to join our product engineering team. You will own features end-to-end, modernise legacy code safely, and manage domain services while collaborating with analysts, QA, and cross-functional teams.

You’ll decompose tasks, tackle integrations with third-party services, ensure data accuracy in attribution and calculations, and continuously improve reliability in a remote-first, global environment.

Qualifications

• 3–6+ years of commercial PHP development experience (strong preference for Symfony).
• Experience working in product teams (understanding the full feature lifecycle).
• Experience supporting and gradually modernising legacy systems.
• Strong understanding of architectural principles.
• Experience integrating third-party APIs (REST, webhooks, authentication, error handling).
• Strong SQL knowledge and understanding of indexes and query optimisation.
• Ability to read and analyse existing code without rewriting everything from scratch.
• Ability to assess risks when changing existing business logic.
• Strong ownership and ability to make technical decisions within the responsibility area.
• High attention to detail in financial and partnership calculation logic.

Responsibilities

• Participate in sprint planning and technical discussions.
• Decompose tasks together with PM and tech leads.
• Develop new functionality within the domain.
• Maintain and refactor legacy code without breaking existing business logic.
• Integrate and support third-party services (affiliate platforms, tracking systems, payment solutions).
• Ensure correct data processing (attribution, calculations, statuses, synchronisations).
• Analyse and reduce technical debt within the team’s domain.
• Improve integration reliability (error handling, idempotency, SLA control).
• Collaborate with analysts and cross-functional teams to clarify requirements.

Skills

PHP development

Symfony

SQL

REST APIs

Webhooks

Code analysis

Technical decisions

Job description

Weltrade, a reliable international Fintech company, seeks a PHP-focused software engineer to join our product engineering team. You will own features end-to-end, modernise legacy code safely, and manage domain services while collaborating with analysts, QA, and cross-functional teams.

You’ll decompose tasks, tackle integrations with third-party services, ensure data accuracy in attribution and calculations, and continuously improve reliability in a remote-first, global environment.