emagine

Senior Developer (High Throughput APIs)

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SeniorZdalnie·LisbonFull-time

#459416·Dodano 9 dni temu·4

Źródło: justjoin.it

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Tech Stack / Keywords

SecuritySystem DesignPostgreSQL Java PHP SQL CI/CDBackendTestingAgile

Podsumowanie oferty

The Senior Developer will work on designing and developing highly scalable backend services and B2B APIs for a high-throughput financial platform. Key responsibilities include building systems to handle large transaction volumes, designing APIs and distributed systems for scalability and reliability, and contributing to modernization of existing PHP and Java modules towards Go. The role emphasizes performance, security, and automated testing within a collaborative engineering team.

Wymagania

Strong proficiency in PHP and Java.
Experience designing and developing backend systems.
Strong understanding of relational databases and SQL optimization.
Experience working with high-transaction-volume systems.
Familiarity with asynchronous processing and concurrent workloads.
Ability to contribute to system design, architecture, and security.
Strong problem-solving skills focused on performance, scalability, and reliability.
Professional fluency in English.

Nice to have:

Experience with Go.
Knowledge of AWS services.
Familiarity with observability tools such as Grafana, Loki, and Alloy.
Experience with PostgreSQL.
Familiarity with Agile methodologies.
Experience in Payments, Fintech, or other financial processing environments.
Experience modernizing legacy systems and migrating services towards modern architectures.

Obowiązki

Design and develop highly scalable backend services and B2B APIs.
Build and maintain systems capable of handling very high transaction volumes.
Take ownership of complex technical challenges from design through to production.
Design APIs, services, data models, and distributed systems with scalability and reliability in mind.
Develop clean, maintainable, testable, and production-ready code.
Work extensively with relational databases and SQL, including query optimization and indexing.
Identify and resolve performance bottlenecks across applications, databases, and systems.
Design asynchronous processing and concurrent workloads.
Contribute to the migration and modernization of existing PHP and Java modules towards Go.
Design resilient systems with retry, recovery, and dead-letter mechanisms.
Implement observability through structured logging, metrics, tracing, and production monitoring.
Apply security principles throughout API and service design and implementation.
Contribute to automated testing, CI/CD, containerization, and production deployments.
Review code and technical designs, providing meaningful feedback to other developers.

Benefity

Remote working model
Duration: 6-12 months

Inne informacje

Candidates must be based in Portugal.

emagine

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