Java

What are Kotlin Rich Errors and how do they differ from exceptions?

Have you used TransactionTemplate in your work? Provide an example where you programmatically decided whether to rollback a transaction or not.

Are your salary expectations 250 thousand rubles net, is that okay?

Senior

СБЕР

Tell about design patterns — why they are needed, what groups, examples.

Senior

СБЕР

Can a singleton service (single instance) be high-load?

Senior

СБЕР

How does Spring Boot differ from Spring? What has appeared in Spring Boot that was not there before?

Can you explain the concept of data sharding in data storage systems?

What are Mission Critical systems and what limitations do they impose?

Senior

СБЕР

Have you worked with Kubernetes manifests? With which objects?

Do you have experience with Hazelcast?

/** * The method calculates how many points the candidate earned, * saves the result to the database, and calls a callback about it to an external service */ public void process(Candidate c) { transactionTemplate.executeWithoutResult(status -> { Score s = interviewScoreMLService.compute(c); String body = objectMapper.writeValueAsString(Map.of(c.getName(), s)); Mono<ResponseEntity<Void>> request = WebClient.create() .post() .body(BodyInserters.fromValue(body)) .retrieve() .toBodilessEntity(); scoreRepository.saveScore(s); }); }

Senior

Райффайзен

What is Compare-and-Swap (CAS) in multithreaded programming? What is it used for?

Senior

Альфа-Банк

In which district do you reside?

What work schedule do you consider?

Senior

СБЕР

What two methods of the Java Object class must be implemented consistently for an object to be used as a key in HashMap?

What transaction isolation levels are available in PostgreSQL?

Senior

Альфа-Банк

Would it be suitable to read a message from Kafka, asynchronously write to a neighboring service, and commit after the service responds?

Middle

ООО ИЦ Ай-теко

Describe the exception hierarchy in Java

Tell us about how tasks were distributed in your team and how architectural decisions were made.

Middle+

Т-Банк

What is your favorite architecture? Tell us about DDD.