Backend Engineer (Java)/Amsterdam Hybrid/10 months + Freelance Contract/Start ASAP Main skills needed: Java, MySQL, Cassandra, AWS, Perl, DynamoDB Remote possibility after onboarding A Coding Test will be required Key Responsibilities: Must have great communication, end to end knowledge/ownership of all aspects … asynchronous approaches Experience with legacy system integration and phased application integration Experience with AWS public cloud services Experience with streaming solutions Practical experience with DynamoDB is a big plus Languages, systems, protocols and tools: Java, Git, Docker, Kubernetes, Maven, Terraform, Java server micro frameworks (Dropwizard, SpringBoot or others), REST … Prometheus, Graphite, Grafana or others), CICD tools (Harness, Jenkins or others), message queues (Kafka, Redis, AWS SQS or others), no-SQL databases (Cassandra, AWS DynamoDB or others), service mesh (Envoy or others), AWS services (Dynamo DB, Lambda, SQS, SNS, Kinesis, etc). More ❯
APIs to ensure smooth data flow between front-end and back-end. Working with databases (relational like PostgreSQL/MySQL or non-relational like DynamoDB) to store, retrieve and manage data efficiently. Ensuring optimal performance, scalability and reliability through testing, debugging and code optimization across the stack. Collaborating closely … Node.js, Python or Ruby and frameworks like Express or Directus. Proficiency in working with databases, both relational (e.g., PostgreSQL, MySQL) and non-relational (e.g., DynamoDB). You're familiar with API design and integration using REST or GraphQL. Bonus points if you have experience with CI/CD pipelines More ❯
Dorset, England, United Kingdom Hybrid / WFH Options
Humand Talent
architecture and delivery. Work with a Modern Tech Stack – Dive into tools and languages including Ruby on Rails, Vue.js, TypeScript, PostgreSQL, Python (AWS Lambdas), DynamoDB, and Angular. End-to-End Ownership – From infrastructure (AWS, DevOps, CI/CD) to databases and front-end, you’ll be hands-on across … as Ruby, Java, C#, or Python. Experience with front-end frameworks like Vue.js, Angular, or React. Comfortable with cloud platforms (AWS preferred), databases (PostgreSQL, DynamoDB), and DevOps tools (CI/CD pipelines). Passion for mentoring, problem-solving, and delivering high-quality, scalable code. Agile methodology experience, including scrum More ❯
Gloucestershire, England, United Kingdom Hybrid / WFH Options
Humand Talent
architecture and delivery. Work with a Modern Tech Stack – Dive into tools and languages including Ruby on Rails, Vue.js, TypeScript, PostgreSQL, Python (AWS Lambdas), DynamoDB, and Angular. End-to-End Ownership – From infrastructure (AWS, DevOps, CI/CD) to databases and front-end, you’ll be hands-on across … as Ruby, Java, C#, or Python. Experience with front-end frameworks like Vue.js, Angular, or React. Comfortable with cloud platforms (AWS preferred), databases (PostgreSQL, DynamoDB), and DevOps tools (CI/CD pipelines). Passion for mentoring, problem-solving, and delivering high-quality, scalable code. Agile methodology experience, including scrum More ❯
and C# . Strong experience in designing and developing Microservice architectures in cloud environments. Proven experience with AWS services including EC2 , Lambda , S3 , RDS , DynamoDB , SNS , SQS , EventBridge, AWS Amplify , and API Gateway . Familiarity with asynchronous messaging and event-based communication patterns (e.g., event queues , publish/subscribe … of cloud security best practices , including access control, encryption, and data protection. Experience with database technologies such as SQL Server , AWS Aurora , MongoDB , and DynamoDB . Familiarity with Agile development methodologies (e.g., Scrum , Kanban ). Excellent communication skills and the ability to collaborate with cross-functional teams. Desirable Skills More ❯
and C# . Strong experience in designing and developing Microservice architectures in cloud environments. Proven experience with AWS services including EC2 , Lambda , S3 , RDS , DynamoDB , SNS , SQS , EventBridge, AWS Amplify , and API Gateway . Familiarity with asynchronous messaging and event-based communication patterns (e.g., event queues , publish/subscribe … of cloud security best practices , including access control, encryption, and data protection. Experience with database technologies such as SQL Server , AWS Aurora , MongoDB , and DynamoDB . Familiarity with Agile development methodologies (e.g., Scrum , Kanban ). Excellent communication skills and the ability to collaborate with cross-functional teams. Desirable Skills More ❯
while supporting dynamic authentication models based on user roles and access control. Design and optimize database interactions using SQL/NoSQL databases (MongoDB, PostgreSQL, DynamoDB). Develop CI/CD pipelines for automated API deployment using AWS services (CodePipeline, Bedrock, CloudFormation). Monitor and improve API performance, logging, and … dynamic authentication mechanisms. Strong knowledge of OLAP workloads and Databricks integration for API-driven data analytics. Experience with SQL/NoSQL databases (MongoDB, PostgreSQL, DynamoDB). CI/CD automation expertise (Jenkins, GitHub Actions, AWS CodePipeline). Proficiency in API testing frameworks (Postman, Newman, Jest, Mocha, PyTest). Strong More ❯
This is a Permanent, Full Time vacancy that will close in 11 days at 23:59 BST. The Vacancy We're building an inclusive work environment Here at Zen, your gender, race, ethnicity, neurodiversity, sexuality, subculture, size, introversion, extraversion, family More ❯
