The Senior Java Engineer will design complex systems, optimize performance, maintain code quality, and ensure application reliability. Responsibilities include translating requirements into applications and troubleshooting issues.
Company Description
POWERING CRYPTO WITH DATA
CoinMarketCap is the world’s most trusted and accurate source of data for cryptocurrencies. Used by millions of individuals, organizations, and exchanges, CoinMarketCap brings the most up-to-date market capitalizations, pricing, and cryptocurrency information to our users.
Pulling data from multiple exchanges and combining our robust research allows us to provide the most realistic representation of each cryptocurrency. As we grow, we will continue to provide access to our data wherever, whenever, and however is most helpful to our users.
CREATING AN OPEN WORLD
Our mission is to be the world’s authority on cryptocurrency data. We believe in an open and decentralized world, where we play a pivotal role in powering decisions and insights to drive greater understanding and adoption of cryptocurrencies. We want to achieve this mission with people who truly believe in the value and potential of empowering individuals.
Job Description
1. Independently investigate and design relatively complex systems
2. Optimize system performance and ensure the stability of system services
3. Translate business requirements and use cases into functional applications
4. Design, build, and maintain efficient, reusable, and reliable Java code
5. Review, test, and verify code for adherence to quality and security standards
6. Ensure the best possible performance, quality, and responsiveness of the applications
7. Identify bottlenecks and bugs, and devise solutions to these problems
8. Help maintain code quality and organization
Qualifications
1. 8+ years of Online troubleshooting experience with full lifecycle of project development for Java applications from similar industry
2. Understand the underlying principles of commonly used middleware
3. Familiar with Redis/MongoDB/MySQL/Kafka/xxl-job/K8s/SpringBoot/localCache/Prometheus
4. Strong skills in core Java, server-side Java technologies, and Spring frameworks
5. Extensive experience in software design, architecture, development integration
6. Solid knowledge of event processing models, multi-threading, enterprise integration pattern, Web Service and REST
7. Experience in Reactor and Microservice would be an added value
8. Basic or Fluent English level
Similar Jobs
Fintech • Financial Services • Cryptocurrency • NFT • Web3
Design, develop, and implement microservice-based components for a derivatives exchange trading platform. Collaborate with product, security, and DevOps teams to optimize products/models, perform code audits, build automated tests and CI/CD pipelines, troubleshoot backend infrastructure, and manage releases and documentation.
Top Skills:
Automated TestingCi/CdContinuous IntegrationDevOpsJavaMicroservicesTdd
Marketing Tech • Software
Design, build, and maintain scalable Java 21 microservices and APIs for partner-facing platforms. Develop infrastructure on AWS using Terraform, work with REST and message brokers, participate in full product lifecycle, perform code reviews, mentor junior engineers, collaborate with cross-functional teams, and join a paid on-call rotation.
Top Skills:
Amazon SqsAws CloudwatchAws EcsAws LambdaBitbucketCi/CdDatadogDockerDynamoDBElasticsearchGitGithub CopilotGrafanaGroovyJava (SparkJava 21JenkinsMySQLPrompt EngineeringPythonQuarkus)RabbitMQRdsReactRedisRest ApiSonarqubeTerraform
Artificial Intelligence • Software
Lead architecture and implement high-performance Java services across monoliths and microservices. Drive system design, tech selection, observability, deployments, and AI-augmented engineering. Own critical components, produce design docs, ensure test coverage, mentor, hire, and coordinate cross-functional delivery.
Top Skills:
AWSAzureClaude Code (Anthropic)CqrsEvent SourcingGCPGrpcIamJavaJava.Util.ConcurrentJvm (Gc Tuning)JweJwsJwtNioNio2Openai CodexPrompt EngineeringRestSagasSpring BootSpring FrameworkTerraformTwelve-Factor AppTwo-Phase Commit (2Pc)Vpc
What you need to know about the Chicago Tech Scene
With vibrant neighborhoods, great food and more affordable housing than either coast, Chicago might be the most liveable major tech hub. It is the birthplace of modern commodities and futures trading, a national hub for logistics and commerce, and home to the American Medical Association and the American Bar Association. This diverse blend of industry influences has helped Chicago emerge as a major player in verticals like fintech, biotechnology, legal tech, e-commerce and logistics technology. It’s also a major hiring center for tech companies on both coasts.
Key Facts About Chicago Tech
- Number of Tech Workers: 245,800; 5.2% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: McDonald’s, John Deere, Boeing, Morningstar
- Key Industries: Artificial intelligence, biotechnology, fintech, software, logistics technology
- Funding Landscape: $2.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Pritzker Group Venture Capital, Arch Venture Partners, MATH Venture Partners, Jump Capital, Hyde Park Venture Partners
- Research Centers and Universities: Northwestern University, University of Chicago, University of Illinois Urbana-Champaign, Illinois Institute of Technology, Argonne National Laboratory, Fermi National Accelerator Laboratory
