Intone

Java full stack engineer

Seattle, United States · On-site
Salary not published
Posted 2 months ago

From Intone's careers page

Status: listed on the employer's own careers page when we last checked (daily). Confirm on their site before applying.

About the role

We are seeking a Full Stack Java Engineer with deep expertise in Apache Kafka and AWS Managed Streaming for Apache Kafka (MSK) for a 12+ month contract role based in Seattle, Washington.

What they ask for vs. your profile

Must have

Kafka
AWS
Java
DevOps
REST APIs
Spring Boot
Terraform
CI/CD
Communication
Docker
Git
Kubernetes

Your match

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Intone

Java full stack engineer

Seattle, United States · On-site
Salary not published
Posted 2 months ago

From Intone's careers page

Status: listed on the employer's own careers page when we last checked (daily). Confirm on their site before applying.

About the role

We are seeking a Full Stack Java Engineer with deep expertise in Apache Kafka and AWS Managed Streaming for Apache Kafka (MSK) for a 12+ month contract role based in Seattle, Washington. In this position, you will lead the migration of enterprise Kafka infrastructure from self-managed environments to AWS MSK, design and build event-driven applications, and modernize streaming platforms while ensuring seamless, low-risk transitions with minimal impact to business-critical systems. You will work closely with engineering, DevOps, and infrastructure teams to deliver highly scalable, secure, and resilient solutions.

Responsibilities

Lead the migration of on-premises or self-managed Kafka clusters to AWS MSK, including planning, sizing, replication, and production cutovers.

Design, develop, and maintain Java/Spring Boot microservices and REST APIs that publish and consume Kafka events.

Build and enhance full-stack applications using modern frontend technologies such as React or Angular where required.

Refactor Kafka producers and consumers to support AWS MSK, including IAM authentication, TLS, networking, and security best practices.

Optimize Kafka performance through effective partitioning, replication, retention, and consumer group management.

Implement monitoring and observability using CloudWatch, Prometheus, Grafana, or similar tools.

Develop migration strategies including validation, dual-read/dual-write, rollback planning, and production readiness.

Show the full description

Partner with DevOps teams to provision infrastructure using Terraform or CloudFormation.

Ensure secure, compliant implementations with encryption, IAM, mTLS, and SASL/SCRAM authentication.

Troubleshoot application, streaming, and infrastructure performance issues.

Produce technical documentation, migration runbooks, and operational procedures.

Mentor junior engineers and promote Kafka and AWS best practices.

Qualifications

Required

Bachelor's degree

5+ years of software engineering experience with Java-based enterprise applications.

5+ years of strong expertise in Java (8/11/17), Spring Boot, and RESTful API development.

5+ years of deep experience with Apache Kafka, including producers and consumers, Kafka Streams, Kafka Connect, Schema Registry (Avro or Protobuf), and consumer groups and partitioning strategies.

5+ years of proven experience implementing or migrating workloads to AWS MSK, including MSK Connect or MSK Serverless.

5+ years of hands-on experience with AWS services including IAM, VPC, CloudWatch, Lambda, S3, and Secrets Manager.

5+ years of experience building full-stack applications using React or Angular.

5+ years of experience with CI/CD pipelines (Jenkins or GitLab CI), Infrastructure as Code (Terraform or CloudFormation), and container technologies such as Docker and Kubernetes.

5+ years of experience working with SQL and NoSQL databases including PostgreSQL, DynamoDB, or MongoDB.

Strong understanding of distributed systems, event-driven architectures, scalability, and fault tolerance.

Experience supporting large-scale production migrations with minimal downtime.

Excellent communication skills and the ability to collaborate across engineering and infrastructure teams.

Strong analytical and problem-solving skills with the ability to work independently in fast-paced environments.

Preferred

Experience migrating from self-managed or Confluent Kafka environments to AWS MSK.

Financial services or other highly regulated industry experience.

AWS certifications (Solutions Architect, Developer Associate, or similar).

Experience implementing Kafka security using IAM, mTLS, SASL/SCRAM, and encryption best practices.

We are seeking a Full Stack Java Engineer with deep expertise in Apache Kafka and AWS Managed Streaming for Apache Kafka (MSK) for a 12+ month contract role based in Seattle, Washington.

What they ask for vs. your profile

Must have

Kafka
AWS
Java
DevOps
REST APIs
Spring Boot
Terraform
CI/CD
Communication
Docker
Git
Kubernetes

What they ask for vs. your profile

Must have

Kafka
AWS
Java
DevOps
REST APIs
Spring Boot
Terraform
CI/CD
Communication
Docker
Git
Kubernetes

Your match

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A short note to a recruiter or the hiring manager after you apply can get your application read sooner.

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