Senior Backend Engineer (Go & Cryptography)

Be in IT.Cybersecurity infrastructure

Workplace type: remote; Locations: Warszawa, Śródmieście, Warszawa, Country code: PLContractSenior

Salary130 - 170 PLN per hour net b2b

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Job Details

Have practical, experience-backed software development experience in Go (Golang).
Have experience designing and implementing APIs with gRPC for inter-service communication.
Have strong knowledge of Kubernetes, including sidecar patterns, stateful services, deployments, and API extensions.
Have basic knowledge of Istio and service mesh.
Understand Data Encryption Keys (DEKs), Key Encryption Keys (KEKs), envelope encryption, and secure key caching.
Have experience working with cryptographic APIs or SDKs.
Know relational databases (RDBMS).
Have basic observability knowledge.
Have English proficiency at B2 or C1 for communication in an international environment.
Python knowledge is a plus.
Previous experience with SAP BTP, particularly KMS, is a plus.
Availability ASAP is preferred; a notice period of up to one month ending at month-end is acceptable.

Develop scalable application-level data encryption solutions for client systems.
Build hybrid systems that protect sensitive customer data from reaching the persistence layer.
Provide strong tenant isolation and efficient key management.
Create and develop sidecar components and a central gateway using Go.
Design and implement gRPC APIs for reliable, low-latency inter-service communication.
Use SAP BTP services, particularly KMS, in the solution architecture.
Work with relational databases for metadata and encrypted key material.

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