Core · Red
Java & the JVM
Modern Java from records to virtual threads, with a solid grasp of the GC, memory model and profiling.
- Java 21
- Kotlin
- Virtual Threads
- JVM Tuning
- JFR
- Concurrency
01
Manifest / About
Form
follows
function
I build backends the way the Bauhaus built chairs — no ornament, every part carrying load.
I'm Deanthony Reed, a Java backend engineer with eight years of experience designing services that move money, data and people reliably. I work mostly with Java 21, Spring Boot and Kafka, building event-driven systems that stay calm under heavy traffic and stay readable for the next engineer.
My work sits where architecture meets operations: clear domain boundaries, well-defined APIs, sensible database schemas, and the observability that lets a team sleep at night. I care about simple designs, honest tests and code reviews that teach something.
8+Years in Java
40MRequests / day
99.98% Uptime kept
02
Elements / Skills
Primary elements
Frameworks · Yellow
Spring Ecosystem
- Spring Boot
- Spring Data
- Spring Security
- WebFlux
- Quarkus
Data · Blue
Persistence
- PostgreSQL
- Redis
- MongoDB
- Flyway
- JPA
Test
Quality
- JUnit 5
- Testcontainers
Messaging · Black
Events
- Kafka
- RabbitMQ
- Outbox
- CQRS
Infrastructure
Cloud & Ops
- Docker
- Kubernetes
- AWS
- Terraform
Interfaces
APIs & Insight
- REST
- gRPC
- OpenAPI
- Prometheus
- Grafana
03
Constructions / Selected Projects
Built structures
C/01
Fintech · Payments
Ledgerline
A double-entry payment ledger replacing a monolithic billing module, built around idempotent commands and an append-only event store.
Java 21Spring BootKafkaPostgreSQL
- Transactional outbox guarantees exactly-once ledger postings.
- Reconciliation jobs settle 2M+ entries nightly.
0Balance drift since launch
C/02
Logistics · Real-time
Routegrid
An event-driven shipment-tracking platform that ingests carrier telemetry and exposes live status through gRPC and REST.
Kafka StreamsgRPCRedisKubernetes
- Stateful stream processing with exactly-once semantics.
- Horizontal autoscaling driven by consumer-lag metrics.
18kEvents / second peak
C/03
Platform · Identity
Keystone Auth
A multi-tenant OAuth2 / OIDC authorization service with fine-grained permissions, shared by twelve internal product teams.
Spring SecurityOAuth2PostgreSQLAWS
- Token introspection served from a Caffeine + Redis cache.
- Zero-downtime key rotation and full audit trail.
4msp99 token validation
C/04
Open Source · Tooling
Plumbline
A small library for contract-testing Kafka producers and consumers with Testcontainers and Avro schema checks in CI.
JUnit 5TestcontainersAvroGradle
- Catches breaking schema changes before they merge.
- Fluent assertion DSL for event payloads.
-70%Integration incidents
04
Chronology / Experience
Composition in time
2022toNow
SeniorSenior Java Backend Engineer
Northwave Payments · Warsaw- Led the migration of the billing monolith into six Spring Boot services on Kubernetes.
- Designed the Kafka-based event backbone now carrying 40M messages per day.
- Mentored five engineers and introduced architecture decision records.
2019to2022
MidBackend Engineer
Cargoflow Systems · Remote- Built real-time tracking APIs with gRPC and Kafka Streams.
- Cut PostgreSQL query latency by 60% through indexing and schema redesign.
- Owned on-call runbooks and the Prometheus / Grafana observability stack.
2017to2019
JuniorJunior Java Developer
Brightlane Software- Developed REST services for an insurance claims platform using Spring and Hibernate.
- Raised unit and integration test coverage from 35% to 85%.
Education
B.Sc. Computer Science
Software engineering & distributed systems.
Certification
Oracle Certified Professional, Java SE
Plus AWS Certified Developer — Associate.
05
Contact / Correspondence
Make contact
Let's build
Deanthony
Deanthony
Reed
Have a backend that needs structure, scale or a calm pair of hands? Send a note — I reply within two working days.
NameDeanthony Reed
AddressChmielna 3
00020 Warsaw
Poland
00020 Warsaw
Poland
Phone+1 943 234 6100
Emaildelphiaprejsnar@gmail.com