Tech Lead Backend Java/Kotlin

About Us:

We are building a unified system for digital marking and traceability of goods in Russia and the EAEU countries. Our system helps reduce counterfeiting and guarantees the authenticity of goods produced in or imported into the country.

Chestny Znak is one of the most high-load platforms of its kind:

— microservice architecture on Kubernetes with Istio in our own infrastructure;

— petabytes of live data, which our services and clients work with around the clock via API;

— billions of transactions per day and tens of thousands of requests per second;

— real-time analytics on event streams and large-scale batch analytics at night;

— a mobile app with over 27 million installations;

— dozens of production releases every day, feature flags, infrastructure as code.

Under the hood: Kafka, Cassandra, Spark, Airflow, Iceberg, ClickHouse, GitLab CI/CD, Helm, Prometheus, Grafana.

We are not afraid of complex challenges and launch bold engineering ideas into production!

About the Team:

We are looking for a Team Lead Backend (Kotlin) for the Core Development team.

Our team:

develops key platform services (core) for the state marking system, handling high loads (tens of thousands RPS) and processing huge volumes of data (hundreds of TB);

works with various SQL and NoSQL databases and storage solutions;

ensures the uninterrupted operation of the system. You encounter our system constantly when you scan marking codes for dairy products, water, and much more at the checkout.

Through our services, we process thousands of marking codes per second from manufacturers to checkouts.

Technology Stack:

Java 17/21, Kotlin, Spring Boot, Spring Cloud, Apache Cassandra, ClickHouse, PostgreSQL, Apache Kafka, Docker, Kubernetes, GitLab CI, Prometheus/Grafana.

Responsibilities:

• Managing a team of backend developers (5 direct reports) - assigning tasks, code reviews, mentoring, conducting 1-on-1 meetings.
• Participating in hiring and onboarding new employees.
• Designing and developing the architecture of high-load core system services.
• Writing high-quality code (Java/Kotlin) and participating in key technical decisions.
• Collaborating with adjacent teams (Backend, Analytics, DevOps) to deliver functionality.
• Ensuring the reliability, fault tolerance, and performance of services.

What we expect from a successful candidate:

Hard Skills:

• At least 6 years of commercial development experience in Java or Kotlin.
• Deep knowledge of Spring Framework (Boot, Cloud, Data).
• Experience with high-load systems and microservice architecture.
• Proficient in working with databases: Cassandra, CockRoach(Postgres), ClickHouse, YDB.
• Experience with message brokers (Kafka/RabbitMQ).
• Knowledge of CI/CD principles, Docker, Kubernetes.

Soft Skills:

• At least 2 years of team management experience (Team Lead / Tech Lead).
• Systems thinking and ability to make architectural decisions.
• Fluent oral and written communication skills.
• Responsibility and result-orientation.

Why Us:

Development Opportunities

• Participation in meetups and conferences: we share knowledge and learn from others.
• Internal corporate training.
• Buddy support: your guide to corporate life.

We Care About Our Employees

• Health: Voluntary medical insurance (including dental) after the probation period, sick leave compensation up to salary (10 working days per year), travel insurance, corporate psychologists.
• Financial assistance in difficult life situations.
• Benefits cafeteria: not only for sports and training, but also for IT services, extended voluntary medical insurance for family.

Convenience and Comfort

• Employment according to the Labor Code of the Russian Federation in an accredited IT company.
• Work remotely from anywhere, in a hybrid format, or from our office in the center of Moscow/St. Petersburg (near the metro).
• Flexible start to the workday.
• We provide work equipment: laptop, monitor, headset — everything for productive work.

Company Life

• Open communication culture.
• Sports: football, volleyball, yoga — many options, choose or create your own community!
• Workshops, children's parties, book club — you won't get bored.
• Stylish merchandise that you'll want to wear.
• Referral program: invite friends and get bonuses.