Position: Backend Software engineer (.NET core, C#, F#)
Company: DraftKings
Category: .NET
Experience required: 2y
English level: intermediate

**Who are we?**
We are DraftKings. 
We’re inspired by our shared passion for developing creative solutions to complex challenges and empowering the people around us to do their best work. We are industry leaders in the digital entertainment and technology space propelled by constant curiosity and diverse perspectives.
Our teams are fueled by innovation. We are looking ahead, building what’s next, and continuously reinventing the industry. We’re a publicly traded (NASDAQ: DKNG) technology company headquartered in Boston, with teams around the world and an expanding global presence. 

**What is our technical challenge?**
Our unit is responsible for sports content delivery. Sports data domain is very reactive by nature, so we have to push a huge number of changes (several thousand per sec) to several thousand clients in near real-time manner. One part of our solution is a data streaming platform. In addition to data streaming, we are building a PUSH-based queryable API which allows retrieving data with SQL-like queries and subscribing to PUSH updates. This concept is very similar to RethinkDb ChangeFeed.

What is our tech stack?
We extensively use .NET Core and microservices approach. From the code perspective, we are mixing C#/OOP (for IO bound operations, infrastructure) with F#/FP (Domain logic, TDD). We keep our functional code approachable to C# developers and we’ll help you learn FP and distributed systems design. Our data streaming platform is based on Kafka and stateful services. For logs, we use ELK, for metrics — InfluxDb + Grafana. The API is based on ASP.NET Core. We use MongoDb for data snapshots.

**Responsibilities**
Working with other team members on the design and implementation of highload applications.
Working with product owners/architects to build services and related workflows.
Create integration, unit and load tests for all our services.

**Requirements**
2+ years of working experience with applications based on C#
1+ year of working experience with API development
Ambition to write high-quality code covered with unit tests
Strong knowledge of C# / .NET / .NET Core
Microservice architecture
Design patterns
Solid debugging and troubleshooting skills
Object Oriented concept and design
Intermediate level of English
Personality:

Team player
Proactive person (not just typical words, we really appreciate this)
Excellent problem solving and analytical skills
Outstanding communication and presentation skills.
Excellent time management, planning, organizational and prioritization skills
Desirable:

Experience with performance analysis & optimization
Experience with online gaming industry and systems
Experience with WebSocket
Experience with Rx.NET
Grafana
Kubernetes
Docker
BS or MS degree in computer science/informatics or equivalent is a plus

**Benefits**
Being a part of an international team focused on excellence in product development
Very good remuneration
Comprehensive health insurance + gym
Team building and fun activities
High end modern office facilities
Dynamic and friendly work environment
Open and transparent communication
Long term career growth opportunities
Professional growth, extra education opportunities and cross-locations knowledge sharing
English classes