REST & Microservices Integrations.
I integrate your system with providers, queues and other microservices - REST, gRPC, Kafka, RabbitMQ.
What it includes
- REST / gRPC API design
- Kafka, RabbitMQ - producer / consumer
- Circuit breakers (Resilience4j)
- Distributed tracing (OpenTelemetry)
- Idempotency, retry, dead letter queues
Who it's for
For teams breaking apart a monolith or adding new external providers.
This is NOT for you if
- You need a thin REST wrapper around a database - that does not require a senior.
- Your system is pure CRUD with no integrations - a regular backend dev is enough.
What you get
Deployed integrations with end-to-end tests and operational runbooks.
See it in practice
1st World Congress on Cancer & Sexual Health
SSR platform for an international medical congress — Java + Spring, Angular SSR, KSeF, Stripe.
View projectFrequently asked questions
Do you design APIs from scratch or consume existing ones?
Both. Greenfield I start from OpenAPI spec → contract test → implementation. Existing APIs I start from Postman / curl + integration test before touching production code.
How do you debug distributed systems without prod access?
Observability-first. Metrics, distributed tracing and structured logs are the first thing I set up, not the last - if they are missing, I add them before hunting for the bug. Without that layer, a distributed system is blind work regardless of seniority. At vHive this is the daily model - microservices on AWS, OpenSearch as the search/analytics layer.
Which message brokers have you worked with?
RabbitMQ - 2 years in production (Apentis: Risk Quadrant + Investor Portal). Idempotency, retry, dead letter queues, queue monitoring. Kafka - I understand the concepts, but I have not run it in production, so I will not pitch myself as a Kafka expert.
Do you work with AWS and cloud?
Yes. At vHive I currently write microservices on AWS with OpenSearch for search and analytics, observability-first from day one. Before that (PKO BP) most systems were on-premise, so cloud-native is my last few years rather than the full 7 - and that is how I position it.
Rate and timeline
Have a "REST & Microservices Integrations" project?
Write a few lines about what you need. I respond within 24h with a proposal for the next step.
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