4 joburi disponibile

Westhouse is one of the leading international recruitment agencies for the procurement of highly qualified experts in fields such as IT life cycle management, SAP, engineering, commerce and specialist consultancy. For our client we are currently looking for a Senior Backend Tech Lead & Lead Architect (m/f/d) General information Reference: 171622 Location: Bratislava (4 Days/Week) and Remote Start: 02.01.2025 (ASAP) Volume: Full time (100%) Duration: 30.06.2025 + Option Languages: English Focus: Leading the design and development of Back End systems with a payment-centric approach. Technology Stack: Languages/Frameworks: Java, Spring Boot, Node.js. Tools/Platforms: AWS (Lambda, EC2, S3), Docker, Kubernetes, Terraform. Databases: MongoDB, PostgreSQL, Redis. Other: Kafka, RabbitMQ, OAuth2, Microservices Architecture, Payment APIs. Responsibilities: Architecting scalable and secure Back End solutions for payment systems. Leading the team in integrating advanced payment features (eg, recurring payments, fraud detection). Ensuring system compliance with payment standards (eg, PCI-DSS, ISO 8583). Collaborating with cross-functional teams to align technical solutions with business payment objectives. Interested? We look forward to receiving your application documents in electronic form. Your Contact: Tobias Gollmann

Westhouse is one of the leading international recruitment agencies for the procurement of highly qualified experts in fields such as IT life cycle management, SAP, engineering, commerce and specialist consultancy. For our client we are currently looking for a Java Backend Developer (m/f/d) General information Reference: 172129 Location: Limerick (4 Days/Week) and Remote Start: 01.01.2025 (ASAP) Volume: Full time (100%) Duration: 31.12.2025 + Option Languages: English Role Overview: As a Senior Java Backend Developer, you will be a key member of the team working on the Internet Payment Gateway (IPG) system. This enterprise-scale platform processes over 1000 transactions per second, and your focus will be on developing robust Back End solutions that ensure high performance, scalability, availability, and resilience. You will also be involved in implementing features to support industry standards such as Nexo and future alternative payment methods. Primary Responsibilities: Develop and maintain Back End systems for the IPG to process high volumes of transactions securely and efficiently. Ensure the system meets non-functional requirements for performance, scalability, availability, and overall system resilience. Design, implement, and optimize Back End services and APIs in Java to support payment processing. Collaborate with cross-functional teams to integrate the Back End systems with other components of the payment gateway. Contribute to the adoption of Nexo payment standards and future-proof the platform for alternative payment methods. Write high-quality, maintainable, and scalable code with a focus on performance and security. Troubleshoot and resolve complex Back End system issues, ensuring minimal downtime and maximum system availability. Participate in code reviews, providing feedback and ensuring adherence to best practices. Continuously monitor system performance and optimize Back End services to handle increasing transaction loads. Required Skills and Experience: Experience: Minimum 5 years of experience as a Java Backend Developer, ideally in a high-transaction, enterprise-scale environment. Strong experience with Back End development using Java and associated technologies (Spring, Hibernate, etc.). Technical Knowledge: Solid understanding of non-functional requirements such as scalability, availability, and performance. Familiarity with payment gateway systems, APIs, and protocols. Experience with microservices architecture and designing scalable Back End systems. Payment Standards: Experience or interest in implementing industry standards such as Nexo or other payment protocols. Problem-Solving & Collaboration: Ability to troubleshoot complex Back End issues and collaborate with cross-functional teams to implement solutions. Strong communication skills and the ability to work well in a team-oriented, agile environment. Interested? We look forward to receiving your application documents in electronic form. Your Contact: Tobias Gollmann

Senior Backend Java Developer Salary: $140k-$150k + bonus Location: Chicago, IL Hybrid: 3 days onsite, 2 days remote *We are unable to provide sponsorship for this role* Qualifications Bachelor's degree 7-10+ years of related experience Must have 5 years tenure in current or previous role Experience (including internal workings of Java) in Java 11+ is required. Experience with app development in Golang. Experience developing software using Object Oriented Designs, advance patterns (like AOP) and multi-threading is required. Experience with distributed message brokers like Kafka, IBM MQ, Amazon Kinesis, etc. is desirable. Experience with cloud technologies and migrations. Experience preferred with AWS foundational services like VPCs, Security groups, EC2, RDS, S3 ACLs, KMS, AWS CLI and IAM etc. Must be able to write good quality code with 80% or above unit and integration tests coverage. Experience with testing frameworks like Junit and Citrus is desirable. Experience working with various types of databases like Relational, NoSQL, Object-based, Graph. Experience following Git workflows is required. Familiarity with DevOps tools: Terraform, Ansible, Jenkins, Kubernetes, Docker, Helm and CI/CD pipeline etc. Responsibilities Actively participates in design of highly performing, scalable, secure, reliable and cost optimized solutions. Primary responsibility is application design and development of next gen clearing applications for business requirements in agreed architecture framework and Agile environment. Thoroughly analyzes requirements, develops, tests, and documents software quality to ensure proper implementation. Follows agreed upon SDLC procedures to ensure that all information system products and services meet: both explicit and implicit quality standards, end-user functional requirements, architectural standards, performance requirements, audit requirements, security rules are upheld, and external facing reporting is properly represented. Participates in code-reviews based on high engineering standards Writes unit and integration tests based on chosen test frameworks. Assists Production Support by providing advice on system functionality and fixes as required.

We are currently looking on behalf of one of our important clients for a Senior Backend Software Engineer (Node.js). The role is permanent position based in Zurich Canton & comes with good home office allowance. Your role: Play a significant role in major technical initiatives & projects, assisting in optimizing data pipelines & enhancing service performance. Contribute to an evolving software architecture & crucial technology decisions. Build & maintain services mainly written in Node.js with NestJS using Redis, DynamoDB, SQL databases, & SOLR. Work in an agile project team & deliver robust Back End functionality & services. Your Skills & Experience: At least 5+ years of professional experience in Backend Software Engineering. Strong expertise in Node.js, Typescript & JavaScript. Skilled & experienced in Backend technologies such as Redis, DynamoDB, NoSQL, SQL Databases & Frameworks like NestJS or Express. Accustomed to AWS Services like SQS, Lambda, S3 & API Gateway. Experience in working with Git & Automated CI/CD Pipelines & Release Cycles. Familiar with GraphQL, Containerized Development & Hosting (Docker). A solid knowledge of Caching Strategies. Any experience in Software Architecture is considered a plus. Your Profile: Completed University Degree in the area Computer Science or Similar. Motivated & committed. Fluent in English (spoken & written). Any German language skills are considered advantageous.