Backend Developer, Java

EC Markets

. Design, build and maintain features in Spring Boot services and shared libraries .

Posted 10/30/2026full-timeBucharest • RomaniaMid-LevelSenior💰 RON 151,800 - RON 228,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in back-end development using Java 17 and Spring Boot, with a strong focus on REST API design, SQL, and PostgreSQL schema management. Proficient in applying secure coding practices and leveraging AI-assisted development tools for efficient software delivery.

Highest-signal resume keywords

Java 17 Back-End DevelopmentSpring Boot FrameworkPostgreSQL Schema DesignREST API DesignAutomated Testing with JUnit

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Hard Skills

Java 17Spring BootSQLPostgreSQLREST APIAutomated TestingCI/CDSchema MigrationsLoad TestingSecure Coding Practices

Soft Skills

Confident Use of AI ToolsProfessional English Communication

Tools & Technologies

AWSFlywayLiquibaseGitTerraformAWS CDK

Certifications & Qualifications

Degree in Computer ScienceDegree in Software Engineering

Industry Keywords

FintechPaymentsTradingBrokerageFCA Client Money Rules

Tech Stack

Tools & technologies

AWSJavaJUnitPostgresSpringSpring BootSpringBootSQLTerraform

About the role

Key responsibilities & impact

Design, build and maintain features in Spring Boot services and shared libraries
Build and strengthen integrations with trading, custody, identity verification, payments, CRM and notification platforms
Ensure deposits, withdrawals and transfers are correct, auditable and reconcilable in line with client money requirements
Own PostgreSQL schema design, migrations and query performance
Instrument services with logging, metrics and tracing
Participate in the engineering support rota
Apply secure-by-default practices, including authentication, secrets management and least-privilege access
Support load testing and remove performance bottlenecks
Work in Scrum sprints and take work through code review, testing environments and production release
Use AI coding tools productively and review, test and explain every AI-assisted change

Requirements

What you’ll need

At least 4 years of back-end development in Java 17 or later with Spring Boot in production
REST API design and integration patterns, including webhooks, retries, idempotency and asynchronous processing
Strong SQL and PostgreSQL, including transactions and schema migrations using Flyway, Liquibase or similar
Automated testing with JUnit and integration tests
Working knowledge of AWS
Experience building systems where data correctness is critical, such as payments, ledgers or financial transactions
Git-based workflow with pull-request reviews and CI/CD
Confident, practical use of AI-assisted development tools, with sound judgement over their output
Professional English for daily work with colleagues across the Group
Degree in Computer Science, Software Engineering or a related field, or equivalent professional experience
4–7 years of hands-on back-end engineering experience
Nice to have: brokerage, trading, payments or wider fintech experience; familiarity with FCA client money rules
Nice to have: infrastructure as code using AWS CDK or Terraform
Nice to have: caching, message queues and event-driven design
Nice to have: CRM integration experience

Benefits

Comp & perks

Annual bonus: eligible for the Group bonus scheme
Pension & social security: employer contributions in line with statutory requirements
Supplementary health insurance
20 working days of annual leave plus public holidays
Company-provided hardware
Annual learning and certification budget, including cloud and Java certifications
Occasional travel to other Group offices, paid for by the company
Reasonable adjustments available at any stage of the recruitment process