Skills

Grouped by engineering discipline — from core backend and distributed systems to financial engineering and Java ecosystem expertise.

Languages

TypeScriptJavaScriptJavaPythonGoC++

Backend

Node.jsNestJSExpress.jsSpring BootFastAPIREST APIsGraphQLgRPCMicroservices

Java / Spring

Java 21Spring BootSpring DataJPAHibernateSpring SecurityGradleJUnitMockitoTestcontainers

Databases

PostgreSQLMongoDBRedisDynamoDBPrismaMongooseTransactionsIndexingConcurrency control

Distributed Systems

KafkaRabbitMQAWS SQSBullEvent-driven architectureSaga / Process ManagersCorrelation IDsIdempotencyDead-letter queuesEventual consistency

Architecture

Domain-Driven DesignHexagonal ArchitectureEnterprise Integration PatternsClean ArchitectureSOLIDPorts and AdaptersSystem DesignAPI Design

Financial Engineering

Payment SystemsWalletsLedgersDouble-Entry AccountingBigDecimalIdempotencyReconciliationTransaction IsolationAudit Trails

Cloud & DevOps

AWSAWS LambdaAWS CDKDockerKubernetesNginxDigitalOceanGitHub ActionsCI/CD

Real-Time

WebSocketsSocket.IOGraphQL SubscriptionsWebRTC

Security

JWTRBACOTPSpring SecurityOAuth2Input validation

Foundations

AlgorithmsData StructuresConcurrencyJVMMultithreadingCompletableFutureOOP

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