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Devexperts

Backend Developer

Devexperts
Lithuania · Full-time · Mid-Senior

Devexperts works with respected financial institutions, delivering products and tailor-made solutions for retail and brokerage houses, exchanges, and buy-side firms. The company focuses on trading platforms and brokerage automation, complex software development projects, market data products, and IT consulting services.


What we are

A global technological leader of capital markets and trading industry.

Over the years our products are awarded by: Wall Street Letter Awards, US Technology Awards, Barrons, Global Forex Awards, Benzinga, CODiE and others.

We know how to create robust, reliable, powerful and user-oriented products for options, stocks, forex, crypto, wealth management and exchanges around the globe.


Who we are

More than 700 engineers in several RnD offices all over the world: Bulgaria, Georgia, Germany, Portugal, Turkey and others.

Our engineers are coding contest winners, podcast makers, public speakers and real craftsmen of software development.


What we have

Our client is an intermediary in FX options trading between prominent institutional players.

New and ongoing projects based on our dxTrade platform — an order management system. Java backend is responsible for all business processes related to trading. Order issuing, validation, routing, execution, option price calculations, reconciliation, etc. High performance, low-latency and fault tolerance is our daily job.


We strive for code quality via careful code reviews and various types of testing. Fear of change is eliminated by a high test coverage. More than 70% in average and 90% on critical parts.

Teams co-exist in a Scrum/Kanban environment backed by Atlassian suite, Slack, TeamCity, Sonar, Docker, etc.


Most project teams are multi-cultural and distributed, typically consist of 3-7 BE engineers balanced by QAs, FEs, BAs.


Job Description


We are looking for a Mid-Senior Backend Developer more focused on Python to join the Research & Development Team.


Our current project involves developing one of the leading trading platforms in the USA, serving a user base of over 200,000 online users daily across desktops, mobile devices, and the web.

The technology stack includes Python (with frameworks such as Django, Flask, and FastAPI), databases and streaming technologies like PostgreSQL, Kafka, DynamoDB, and Redis, as well as tools such as Docker, Airflow, Kubernetes, and Terraform, with AWS as the cloud environment, and requires experience in building and maintaining scalable services with a strong focus on non-functional requirements.


The responsibilities of the platform's backend services include handling all business processes related to trading, such as order issuance, validation, routing, execution, option price calculation, and reconciliation. We prioritize high performance, low latency, and fault tolerance in our day-to-day tasks. We ensure code quality by performing careful code reviews and various types of testing.


We expect the Backend Developer to:

  • Design and develop robust, scalable, and efficient finance services using Python,
  • Implement versatile finance reporting pipelines,
  • Implement integrations for internal and external finance services,
  • Troubleshoot, debug, and enhance an existing system,
  • Research and implement new technologies to maximize development efficiency,
  • Collaborate with cross-functional teams to define, design, and ship new features.


Qualifications

Must-have skills:

  • Bachelor’s degree in Computer Science, Engineering, or a related field,
  • 4+ years of proven experience as a Python Developer (experience in the FinTech sector is a plus),
  • Strong understanding of at least one of these frameworks: Django, Flask, FastAPI,
  • Passion for coding,
  • Knowledge in computer science data structures, algorithms, and their complexities,
  • Desire to optimise, document, and maintain code, and also carefully cover it with tests,
  • Willingness and energy to take your ideas all the way from proof of concept to production-ready code,
  • General responsibility and a result-oriented mindset,
  • Desire to achieve goals as a team, willingness to help colleagues, and ability to provide/accept constructive feedback,
  • B2+ English to be able to communicate with multicultural teams and a US customer,
  • Excellent problem-solving skills and ability to work under pressure,
  • Substantial communication and teamwork skills.


Nice-to-have skills:

  • Trading and capital markets background,
  • Hands-on experience in concurrent programming and understanding of thread synchronization approaches,
  • Exposure to distributed systems, following strong performance and reliability requirements,,
  • Solid Unix/Linux knowledge,
  • Data engineering technologies (Apache Spark, PySpark, Airflow, and Presto),
  • Experience with cloud services (preferably AWS) and containerization technologies (Docker, Kubernetes).


Additional Information

Care for the employees is one of Devexperts' core values. For the suggested position, we offer a benefits package that will guarantee the comfort of our new teammate.


Flexibility benefits:

  • Possibility of hybrid/remote work mode,
  • Flexible working hours.

Health and recreation benefits:

  • 20 days of paid vacation,
  • Fully paid additional wellness days (3 days per working year),
  • Medical insurance,
  • Sport compensation.

Facility benefits:

  • Modern office with new equipment,
  • Parking spaces,
  • Free drinks and snacks.

Community benefits:

  • Teambuilding activities,
  • Corporate parties,
  • Speakers' club,
  • Free admission to corporate external events,
  • Possibility of joining conferences and professional fairs,
  • Personal branding development support.

Professional training benefits:

  • Unlimited access to self-learning platforms,
  • Certification opportunities,
  • Mentorship Program.

Social benefits:

  • Parental bonus,
  • Referral bonus,
  • Gifts for employees,
  • Gifts for children.

Key Skills

Ranked by relevance

docker fault tolerance python django flask cloud aws containerization data structures kubernetes postgresql terraform dynamodb branding fastapi apache redis kafka slack spark java
Login to Apply
Posted
Aug 25, 2025
Type
Full-time
Level
Mid-Senior
Location
Vilnius
Company
Devexperts

Industries

IT Services IT Consulting

Categories

Engineering

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