Top Java Developer Jobs in Buffalo, NY

Reposted 13 Days AgoSaved
In-Office or Remote
Buffalo, NY
35K-124K Annually
Expert/Leader
35K-124K Annually
Expert/Leader
Agency • Information Technology
Design, build, and maintain server-side Java applications and RESTful APIs. Optimize performance and scalability, ensure security, collaborate with cross-functional teams, perform code reviews, troubleshoot production issues, and document system architecture.
Top Skills: AWSAzureCi/CdDockerGitGithub ActionsHibernateJavaJenkinsKubernetesMicroservicesNoSQLRestful ApisSpring BootSQL
Reposted 13 Days AgoSaved
In-Office or Remote
Buffalo, NY
40K-142K Annually
Senior level
40K-142K Annually
Senior level
Agency • Information Technology
Design, develop, and maintain web applications using Java/Spring Boot backends and Angular frontends. Build RESTful APIs, write clean maintainable code, participate across the SDLC, collaborate with cross-functional teams, troubleshoot full-stack issues, and help improve development processes and tools.
Top Skills: AngularGitJavaRestful ApisSpring Boot
Reposted 13 Days AgoSaved
In-Office or Remote
Buffalo, NY
38K-135K Annually
Senior level
38K-135K Annually
Senior level
Agency • Information Technology
Reverse-engineer TIBCO BW/MFT processes to extract business logic, then design and implement a modular Java/Spring Boot microservices replacement. Migrate protocols to Kafka/RabbitMQ/REST, translate XML transformations, ensure data persistence and consistency, and validate performance to meet existing SLAs.
Top Skills: Apache CamelEmsJava 19KafkaRabbitMQRendezvousRestSpring BootSpring IntegrationSQLTibco BusinessworksTibco MftXml SchemaXpathXslt
Reposted 13 Days AgoSaved
In-Office or Remote
Buffalo, NY
44K-156K Annually
Senior level
44K-156K Annually
Senior level
Agency • Information Technology
Lead architecture and delivery of Java-based microservices at scale. Define standards, mentor teams, drive CI/CD and observability, ensure resilience, performance, and data governance while collaborating with stakeholders and managing technical risk.
Top Skills: Asynchronous MessagingAWSAzureCassandraCi/CdDockerElkEvent-Driven ArchitectureGCPGrafanaIstioJaegerJavaKafkaKubernetesLinkerdMicroservicesMongoDBMySQLOauth2PkiPostgresPrometheusRabbitMQRestful ApisSaga PatternSAMLSpring Boot
Reposted 13 Days AgoSaved
Remote
Buffalo, NY
40K-142K Annually
Senior level
40K-142K Annually
Senior level
Agency • Information Technology
Design, develop, and maintain scalable Java/Spring Boot backends and Angular frontends. Build microservices, REST APIs, event-driven solutions with Kafka, implement fault tolerance (Hystrix/circuit breakers), observability (SLI/SLO), and deploy on Kubernetes/AWS. Collaborate cross-functionally, mentor junior developers, and ensure system reliability and performance.
Top Skills: AngularAWSCircuit BreakerHystrixJavaJava 22KafkaKubernetesMicroservicesRestful ApisSliSloSpring Boot
Reposted 13 Days AgoSaved
In-Office or Remote
Buffalo, NY
40K-142K Annually
Senior level
40K-142K Annually
Senior level
Agency • Information Technology
Design, develop, and maintain full-stack web applications using Java/Spring Boot backends and Angular frontends. Build RESTful APIs, write clean code, collaborate with cross-functional teams, troubleshoot issues, and participate across the SDLC.
Top Skills: AngularGitJavaRestful ApisSpring Boot
Reposted 13 Days AgoSaved
In-Office or Remote
Buffalo, NY
44K-154K Annually
Senior level
44K-154K Annually
Senior level
Agency • Information Technology
Develop and architect enterprise Java applications using Core Java, multithreading, Spring Boot microservices, REST APIs, Hibernate, and Oracle PL/SQL. Ensure security, high availability, and collaborate in Agile with global teams and business stakeholders.
Top Skills: HibernateJavaMicroservicesMulti-ThreadingOracle Pl/SqlRestSecuritySpringSpring Boot
Reposted 13 Days AgoSaved
Remote
Buffalo, NY
Senior level
Senior level
Agency • Information Technology
Lead architecture and delivery of large-scale microservices systems, define standards and roadmaps, mentor engineers, ensure scalability/resilience, oversee CI/CD, observability, data strategy, and cross-functional technical alignment.
Top Skills: Asynchronous MessagingAWSAzureCassandraCi/CdDockerDomain-Driven Design (Ddd)ElkEvent-Driven ArchitectureGCPGrafanaIstioJaegerJavaKafkaKubernetesLinkerdMicroservicesMongoDBMySQLOauth2PkiPostgresPrometheusRabbitMQRestful ApisSaga PatternSAMLSpring Boot
Reposted 13 Days AgoSaved
Remote
Buffalo, NY
40K-142K Annually
Senior level
40K-142K Annually
Senior level
Agency • Information Technology
Design, develop, and maintain high-performance Java microservices using Spring Boot. Implement threading/concurrency, fault-tolerance (Hystrix/circuit breakers), observability (SLI/SLO), and event-driven solutions with Kafka. Deploy and operate services on Kubernetes and AWS, mentor junior developers, and collaborate with cross-functional teams to deliver reliable, scalable features.
Top Skills: AWSHystrixJavaJava 22KafkaKubernetesSli/SloSpring Boot
Reposted 13 Days AgoSaved
Remote
Buffalo, NY
Senior level
Senior level
Agency • Information Technology
Design, develop, and maintain scalable Java backend services and RESTful APIs. Collaborate with frontend, product, and stakeholders; write clean, tested code; troubleshoot and resolve issues; participate in code reviews; and improve systems, particularly for large-scale distributed environments.
Top Skills: AWSAzureDistributed SystemsDockerGCPJavaKubernetesMongoDBMySQLNoSQLPostgresRestful ApisSQL
Reposted 13 Days AgoSaved
In-Office or Remote
Buffalo, NY
Senior level
Senior level
Agency • Information Technology
Design, implement, and maintain Java-based applications to automate financial data reconciliation across relational and NoSQL sources. Build deterministic and heuristic matching algorithms, integrate with rules engines (Drools), handle errors and exceptions, collaborate with analysts and architects to resolve data gaps, and support data governance and quality initiatives.
Top Skills: DroolsHibernateJavaJdbcNoSQLRelational DatabasesSpring Data
Reposted 13 Days AgoSaved
In-Office or Remote
Buffalo, NY
Senior level
Senior level
Agency • Information Technology
Design, implement, and maintain Java-based applications to automate complex data reconciliation across relational and NoSQL sources. Build matching algorithms, integrate with rules engines (Drools), handle data streams, perform gap analysis, and collaborate with analysts and architects to ensure data quality.
Top Skills: DroolsHadoopHibernateJavaJdbcKafkaKinesisNoSQLRelational DatabasesSparkSpring Data
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14 Days AgoSaved
Remote
Buffalo, NY
Senior level
Senior level
Information Technology • Professional Services
Design, develop, and modernize software by translating legacy mainframe code (COBOL/ASM/JCL/Copybooks) into Java microservices. Support UI integration, relational and hierarchical databases, batch and real-time processing, CI/CD, cloud-native and ZT/ICAM integration, and use AI/ML tools to assist translation and optimization. Work supports pre-production, testing, and integration activities.
Top Skills: .NetAi/MlAngularjsAsmCi/CdCloud NativeCobolCopybooksHierarchical DatabasesHTMLJavaJavaScriptJclMicroservicesOracle Java SeRelational DatabasesRest ApiSoapWeb ApisZt/Icam
14 Days AgoSaved
Remote
Buffalo, NY
33K-118K Annually
Senior level
33K-118K Annually
Senior level
Agency • Information Technology
Develop and maintain Java Spring Boot microservices, write automated tests and API validations, debug and optimize performance, collaborate with architects, front-end developers and product owners, participate in Agile ceremonies, document designs, perform peer code reviews, and support deployments and release activities.
Top Skills: Ci/CdDapperDockerDynatraceElkEntityFlux)GitGitlabHibernateIntellijJava 8JIRAJunitKafkaKibanaMs SqlOauthOraclePgadminPostgresPostmanReactive (MonoRestful ApisSoap UiSonarqubeSpring BootSwagger
Reposted 14 Days AgoSaved
Remote
Buffalo, NY
133K-211K Annually
Senior level
133K-211K Annually
Senior level
Cloud • Security • Software • Generative AI
Develop and maintain core Elasticsearch infrastructure and shared platform features. Design scalable APIs, solve performance and concurrency issues, improve observability and CI/CD, automate developer workflows, lead cross-team projects, support complex operational investigations, and use AI to accelerate development and debugging.
Top Skills: Argo CdBuildkiteCi/CdContainersElasticsearchGitopsGoGradleJavaJdkKubernetesMavenOpentelemetryPainlessServerless
Reposted 14 Days AgoSaved
Remote
Buffalo, NY
160K-253K Annually
Senior level
160K-253K Annually
Senior level
Cloud • Security • Software • Generative AI
Design, build, and improve Elasticsearch distributed-systems components for scalable, concurrent, and consistent indexing. Maintain cluster coordination for performance and resilience, push system scale limits, investigate performance and concurrency issues, support operations/support engineers, and lead projects involving multiple engineers from design through delivery.
Top Skills: ElasticsearchJavaJdkLuceneNetty
Reposted 14 Days AgoSaved
Remote
Buffalo, NY
133K-211K Annually
Senior level
133K-211K Annually
Senior level
Cloud • Security • Software • Generative AI
The role involves improving Elasticsearch's distributed components, maintaining cluster coordination systems, and addressing complex issues to optimize performance and scalability.
Top Skills: ElasticsearchJavaLuceneNetty
15 Days AgoSaved
Remote
Buffalo, NY
50-65 Hourly
Mid level
50-65 Hourly
Mid level
Artificial Intelligence • HR Tech • Professional Services • Software
Build, integrate, and stress-test full-stack applications and backend services that leverage advanced AI models. Develop production APIs, front-end features, databases, and cloud infrastructure; troubleshoot integrations; prototype rapidly and deliver high-quality code and documentation in fast-moving environments.
Top Skills: C#C++Cloud DeploymentDocument DatabasesEvaluation FrameworksJavaModel ApisMonitoringPythonReactRelational DatabasesRustTelemetryTypescript
Reposted 15 Days AgoSaved
Remote
Buffalo, NY
Expert/Leader
Expert/Leader
Agency • HR Tech • Information Technology • Professional Services
Develop and maintain Java applications for DoD systems, focusing on backend services, REST APIs, and microservices, while ensuring security and performance.
Top Skills: AWSAzureDockerFismaGitGitlab CiGovcloudJavaJenkinsKubernetesMicroservicesMySQLNistOraclePostgresRest ApisSpring BootSpring Framework
Reposted 15 Days AgoSaved
Remote
Buffalo, NY
Senior level
Senior level
Artificial Intelligence • Information Technology • Machine Learning • Software • Virtual Reality • Analytics
The Staff Engineer will leverage over 5 years of experience in Java, JavaScript, and frameworks to develop robust solutions, mentor teammates, and enhance client outcomes while utilizing agile methodologies and cloud development tools.
Top Skills: AngularCSSDockerGitlab CiHibernateHTMLJavaJavaScriptJenkinsReactSpring BootSpring Core
Reposted 15 Days AgoSaved
Remote
Buffalo, NY
Senior level
Senior level
Artificial Intelligence • Information Technology • Machine Learning • Software • Virtual Reality • Analytics
Seeking a Staff Engineer with 5+ years in Java, focusing on mentoring teammates, solving client challenges, and conducting cloud development.
Top Skills: CSSDockerGitlab CiHibernateHTMLJavaJavaScriptJenkinsSpring BootSpring Core
16 Days AgoSaved
Remote
Buffalo, NY
Senior level
Senior level
Information Technology • Professional Services • Software • Cybersecurity
Senior Java engineer responsible for designing, developing, and maintaining scalable, secure backend systems using Java and modern frameworks. Participate in architecture, collaborate with product and security teams, write maintainable code, and adopt AI-assisted development tools while contributing to open-source efforts.
Top Skills: GradleHibernateJavaMavenQuarkusSpringStruts
Reposted 17 Days AgoSaved
Remote
Buffalo, NY
Senior level
Senior level
Information Technology
Senior individual-contributor backend engineer responsible for designing, building, and operating production-grade, highly available, strongly consistent services for wallet operations, transaction orchestration, blockchain integrations, and event-driven workflows. Implement secure, scalable APIs, cryptographic key management, Kafka-based event systems, observability with OpenTelemetry, CI/CD pipelines, and produce tests, API specs, and operational runbooks.
Top Skills: Apache KafkaCi/CdCryptographyDevsecopsDistributed TracingJavaKey ManagementMicroservicesObservabilityOpentelemetryRestSpring BootWeb3 Sdks
Reposted 20 Days AgoSaved
In-Office or Remote
Buffalo, NY
40K-140K Annually
Senior level
40K-140K Annually
Senior level
Agency • Information Technology
Develop and operate Java Spring Boot microservices, deploy and manage services on Kubernetes, perform JVM profiling and heap analysis, load test, diagnose memory leaks, OOMs and P99 latency spikes, remediate security vulnerabilities, and maintain GitHub-based CI/CD and branching workflows.
Top Skills: ArgocdAWSCi/CdFluxcdGitGitflowGitGithub ActionsGithub CopilotGkeHelmHelm ChartsJavaJvmKubernetesMicroservicesSpring BootTerraformTrunk-Based Development
21 Days AgoSaved
Remote
Buffalo, NY
Mid level
Mid level
Information Technology • Consulting
Develop, maintain, and deploy Java-based applications using Spring MVC and microservices. Diagnose and fix bugs and performance issues, design scalable systems, use CI/CD and version control, follow security guidelines, and communicate progress with project managers.
Top Skills: BitbucketCi/CdGitJavaJenkinsKeycloakMicroservicesQuarkusRestful ApiSpring MvcSQL
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