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Software Engineer Expert
Codewise - view profile
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Kraków, Poland
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Mid
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ASAP
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Full-time
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Contract of Employment
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English (B2)
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Hybrid
Job description
About you
No matter if you are an expert in writing latency sensitive high throughput and high performance data processing applications in java or just starting the journey. You will be welcome in our small, highly intelligent team where your voice will be equally heard.
You will redefine processes and tools without the need to argue with architects or bureaucrats. You will learn to show mechanical sympathy to all hardware, large and small. You will experiment and apply learned skills at scale while processing gigabytes of data in milliseconds. You will build systems that impact the whole company and waiting to deploy them to production for one hour will seem unacceptably long.
About the company
We move fast and break things. We pride ourselves in having minimal bureaucracy, leaving key decisions in the hands of employees, relying on their ingenuity and initiative to drive products further. Our bread and butter is Internet marketing. Our two core products are Zeropark (internet traffic marketplace) and Voluum - cloud-based tool for tracking marketing campaigns with data analytics and AI automation.
About the project
We do streaming data ingestion and online analytics using our custom made database (written in Java). We design tests that ensure the integrity of all the processed data. We run automatic builds, deployments and performance tests with feedback from profilers. Deployments happen every day. We strive to pay technical debt on time. We automate all possible QA testing steps and update them when a new feature is developed. Developers write all unit and integration tests.
We run on Java 14, use EC2 and S3 services. We DO NOT run on Kubernetes. Our DB manages more than 300 terabytes of data. We use libraries like RxJava, Disruptor, Agrona, Aeron, Netty, Kotlin, Spock.
What we offer
Must have
- Java
- GC
- data
- Automation Testing
- API
Nice to have
- linux
- AWS
- Web Development
Responsibilities
- Take active part in designing architecture of the system
- Analyse requirements from (internal) client perspective while taking into consideration performance, time and cost
- Implement new services and APIs used by all products in the company
- Design and conduct experiments to improve our algorithms and overall architecture
- Ensure applications have proper end to end tests, monitoring and documentation
- Create production clusters (Terraform), deploy to production (EC2), verify deployments
- Provide support for production services (PagerDuty)
- Investigate and implement new technologies (e.g. JVM features) related to data processing, application performance, performance monitoring, infrastructure
Requirements and qualifications
- Ability to look at the system from the perspective of clients (other dev teams)
- Capacity for learning and investigating how things work
- Good programming skills in Java
- Knowledge about garbage collection
- General knowledge of the issues of cloud computing and data processing
- Good command of written and spoken English
Benefits
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Sport card
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Private medical care
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Private parking
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Flexible working hours
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Free coffee
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Bike parking
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Playroom
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Library
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Shower
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Canteen
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Home office possible
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Other
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Fresh fruit and vegetables
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training budget
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private gym
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