Senior Fullstack Developer

Mr Wolf Sp. z o.o.; Remote; PLN 120,000 - 180,000; Full time

Job summary

A fintech company in Poland is seeking an experienced Senior Fullstack Developer to enhance their engineering team. This role focuses on designing and optimizing scalable backend systems in Java while building RESTful APIs. Candidates should have over 5 years of backend development experience, solid knowledge of Spring Boot, and familiarity with cloud platforms. The company offers a competitive compensation package and flexible remote work arrangements while working with cutting-edge technologies including AI.

Benefits

Competitive compensation package

Flexible working arrangements

Opportunities to work with cutting-edge technologies

Professional development

Collaborative work environment

Qualifications

• 5+ years of professional experience as a Backend Developer (Java).
• Solid knowledge of Spring Boot, Hibernate, JPA and microservices architecture.
• Experience with cloud platforms (AWS, GCP, or Azure).
• Strong understanding of databases (SQL and NoSQL).
• Proven experience with AI/ML integration.
• Hands-on experience with containerization (Docker, Kubernetes).
• Familiarity with security and compliance best practices.

Responsibilities

• Design, develop, and maintain scalable backend systems in Java.
• Build and optimize RESTful and event-driven APIs.
• Collaborate with architects, frontend engineers, and product teams.
• Ensure system reliability, performance, and security.
• Drive best practices in coding, testing, and CI/CD pipelines.
• Mentor team members and contribute to technical decision-making.

Skills

Backend Development in Java

Spring Boot

Hibernate

Microservices Architecture

Cloud Platforms (AWS, GCP, Azure)

SQL and NoSQL Databases

AI/ML Integration

Containerization (Docker, Kubernetes)

Event Streaming (Kafka, RabbitMQ)

DevOps Practices

Job description

As a developer at Wolf you will be building a highly scalable, reliable, distributed financial platform driving a variety of products in the fintech space. You will be a part of driving the pivotal digital change in the banking and financial services area. We design and develop software using top class software engineering practices. We strongly believe that digital financial services are not the future, they are presently here and now and we need to take the opportunity to surf the wave of financial change.

Location

Polska

Senior Fullstack Developer

We are looking for an experienced Senior Fullstack Developer to join our engineering team. You will design, implement, and optimize backend services that power large-scale, high-performance systems. This is an opportunity to work on innovative projects that involve advanced software engineering practices, cloud‑native development, and integration with AI‑driven solutions.

Benefits

• Competitive compensation package.
• Flexible working arrangements (remote).
• Opportunities to work with cutting‑edge technologies, including AI.
• Professional development and career growth.
• Collaborative and international work environment.

Responsibilities

• Design, develop, and maintain scalable backend systems in Java.
• Build and optimize RESTful and event‑driven APIs.
• Collaborate with architects, frontend engineers, and product teams to deliver end‑to‑end solutions.
• Ensure system reliability, performance, and security at scale.
• Drive best practices in coding, testing, and CI/CD pipelines.
• Mentor team members and contribute to technical decision‑making.
• 10% front‑end work.

Qualifications

• 5+ years of professional experience as a Backend Developer (Java).
• Solid knowledge of Spring Boot, Hibernate, JPA and microservices architecture.
• Experience with cloud platforms (AWS, GCP, or Azure).
• Strong understanding of databases (SQL and NoSQL).
• Proven experience with AI/ML integration (e.g., using AI APIs, deploying ML models, or optimizing systems with AI‑driven approaches).
• Hands‑on experience with containerization (Docker, Kubernetes).
• Familiarity with security and compliance best practices in backend systems.
• Excellent problem‑solving and communication skills.
• Experience with event streaming platforms (Kafka, RabbitMQ).
• Exposure to DevOps practices and Infrastructure as Code (Terraform, Ansible).
• Knowledge of distributed systems and high‑throughput environments.