CrawlJobs Logo

Senior Python Software Engineer

rtbhouse.com Logo

RTB House

Location Icon

Location:
Poland

Category Icon
Category:
IT - Software Development

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided
Save Job
Save Icon
Apply Position

Job Description:

RTB House is a global company that provides state-of-the-art marketing technologies for top brands and agencies worldwide. Its proprietary ad-buying engine is the first in the world to be powered entirely by Deep Learning algorithms, enabling advertisers to generate outstanding results and reach their goals at every stage of the funnel. We are looking for a Senior Python Software Engineer to join our internal team at RTB House. In this role, you will own complex technical challenges, design and scale backend systems, and deliver solutions that directly support our core business in real-time bidding. This position is ideal for engineers who thrive on problem-solving, system design, and building reliable software that has immediate impact. At the same time, we combine local expertise with our broader company vision, giving you both autonomy and the opportunity to contribute to a truly global product.

Job Responsibility:

  • Design, develop, and maintain internal web applications responsible for ad campaigns management, e.g. configuration, monitoring, automation
  • Drive the design and implementation of jobs and processes integrating internal services at scale
  • Take ownership of complex technical topics end-to-end: explore new domains, clarify requirements, decompose problems, and deliver robust solutions
  • Identify and eliminate bottlenecks, implement performance optimizations to maximize efficiency, scalability, and reliability
  • Write and maintain unit/integration tests to ensure code quality and long-term stability
  • Shape and evolve internal Python libraries and frameworks used across teams
  • Collaborate with cross-functional teams, providing clear technical guidance and translating complex concepts into simple explanations

Requirements:

  • Proven experience in backend development with Python, writing reliable, maintainable, and testable code
  • Strong knowledge of SQL, relational/analytical databases, indexing, query optimization, and performance tuning (PostgreSQL, BigQuery)
  • Experience in asynchronous programming and building distributed or event-driven systems
  • Practical experience in designing APIs (REST, GraphQL) and understanding of HTTP/web internals
  • Solid understanding of system design fundamentals: scalability, availability vs. consistency trade-offs, caching, data modeling
  • Ability to independently lead technical initiatives: from exploring requirements, evaluating alternatives, making design trade-offs, to implementation
  • Experience in writing high-quality, well-tested, maintainable code
  • Excellent problem-solving skills: structured thinking, decomposition of complex issues, prioritization
  • Strong communication skills: ability to explain technical matters clearly to both engineers and non-technical stakeholders
  • Fluency in English
  • Comfort working in a fast-paced environment, balancing multiple priorities effectively
What we offer:
  • Being part of a small team with a high degree of autonomy and decision-making
  • Attractive compensation
  • Access to the latest technology in the developed solution
  • Opportunity to build and improve our own products, where long-term quality and reliability truly matter
  • Participation in one of the most interesting projects of the online industry in Poland and one of the fastest growing technology companies in Europe

Additional Information:

Job Posted:
January 13, 2026

Work Type:
Remote work
Icon
RTB House - All Job Offers
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Senior Python Software Engineer

Senior Software Engineer

As a Senior Software Engineer at Checkr, you will work on high impact engineerin...
Location
Location
Chile , Santiago
Salary
Salary:
45900000.00 - 54000000.00 CLP / Year
https://checkr.com Logo
Checkr
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • A strong sense of ownership
  • Familiarity building and using different types of APIs, for example ReST, SOAP, gRPC
  • Knowledge object oriented programming language, preferably Ruby, Java, or Python
  • You have curiosity in figuring out how to deliver clean, robust and scalable code
  • You have experience with at least one or more of the following: CI/CD tools, microservices, infrastructure services (Publish-subscribe systems, API Gateways, RPC frameworks, high-level testing strategies), or open source software
  • You understand how to build reliable distributed systems and can discuss tradeoffs in depth
  • You are a strong communicator and can build agreement between groups of people with different levels of technical expertise
  • Advanced English Speaking Proficiency
Job Responsibility
Job Responsibility
  • Learn about ATS Systems and how they interact with Checkr
  • Building new features for ATS integrations and testing them
  • Communicating with internal and external developers to build solutions that improve their productivity
  • Defining requirements to grow Checkr’s public APIs to cover new and existing product features
  • Help identify, triage and solve bugs
What we offer
What we offer
  • A collaborative and fast-moving environment
  • Be part of an international company based in the United States
  • Learning and development reimbursement allowance
  • Competitive compensation and opportunity for professional and personal advancement
  • 100% medical, dental, and vision coverage for employees and dependents
  • Additional vacation benefits of 5 extra days and flexibility to take time off
  • In-office perks are provided, such as lunch four times a week, a commuter stipend, and an abundance of snacks and beverages
  • Fulltime
Read More
Arrow Right

Senior Software Engineer - Data Team

We’re looking for Software Engineers to join our Data Department, developers wit...
Location
Location
Spain , Barcelona; Madrid
Salary
Salary:
50000.00 - 70000.00 EUR / Year
https://feverup.com/fe Logo
Fever
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Python Proficiency: confident working deeply in Python, understand topics like the GIL, concurrency (asyncio), generators, and decorators, care about maintainable typing and thoughtful performance optimization
  • Architecture Patterns: comfortable applying Hexagonal Architecture to keep domain logic clean and decoupled, can leverage patterns like CQRS and the Transactional Outbox to support consistency and reliability in an event-driven environment
  • Database Polyglot: strong SQL fundamentals, know how to design for performance (PostgreSQL internals, indexing strategies), understand when tools like Redis (caching) or Elasticsearch (search/aggregations) are the right fit
  • Communication: communicate clearly in English across audiences
  • Pragmatic mindset: balance quality with impact, able to make thoughtful trade-offs, deliver iteratively, and keep an eye on long-term sustainability while moving at a good pace
Job Responsibility
Job Responsibility
  • Architect and Build: Design, implement, and maintain scalable microservices using Python (FastAPI/Django), take ownership of breaking down complex monoliths or building new services from the ground up, applying DDD principles
  • Master the Event Stream: Build robust, event-driven flows with Kafka, ensure that our events are durable, ordered, and processed idempotently, managing eventual consistency with care
  • Integrate at Scale: Design fault-tolerant integrations with third-party ecosystems (Meta Ads, Google Marketing Platform, Salesforce), navigate rate limits, retries, and circuit breakers to maintain platform stability
  • Bridge OLTP and OLAP: Work at the intersection of transactional applications and analytical data, optimize PostgreSQL for operational efficiency while designing ingestion pipelines for Snowflake and Elasticsearch, using Airflow and dbt
  • Productionize Data Capabilities: Partner closely with Data Science, Machine Learning, and Data Engineering teams to ensure seamless integration of data sources and model infrastructure
  • Elevate the Bar: Lead thorough code reviews, write RFCs for key technical decisions, and mentor mid-level engineers, champion testing strategies (unit, integration, contract testing) and advocate for clean, sustainable code architecture
What we offer
What we offer
  • Responsibility from day one and professional and personal growth
  • Opportunity to have a real impact in a high-growth global category leader
  • A compensation package consisting of base salary and the potential to earn a significant bonus for top performance
  • Stock options plan
  • 40% discount on all Fever events and experiences
  • Home office friendly
  • Health insurance and other benefits such as Flexible remuneration with a 100% tax exemption through Cobee
  • English / Spanish Lessons
  • Wellhub Membership
  • Possibility to receive in advance part of your salary by Payflow
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

At Intercom, you will be a Senior Software Engineer - someone who solves real cu...
Location
Location
Ireland , Dublin
Salary
Salary:
Not provided
intercom.com Logo
Intercom
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of industry experience in a software engineering role, preferably building a SaaS product
  • Deep knowledge of a high-level programming language (for example, Ruby, Python, Javascript etc.)
  • Experience collaborating directly with product teams and designers, and a proven track record of delivering value to customers or users
  • Experience with Distributed systems
Job Responsibility
Job Responsibility
  • Develop technical plans and contribute to our technical architecture as we scale our products to serve tens of millions of people every day
  • Write Ruby code, which knits together a lot of AWS, infrastructure, platform and SaaS technologies that form the core of Intercom’s backend infrastructure
  • Ship a change to production on your first day and a feature in your first week
  • Build using the best tools in the industry
  • Grow your team’s capacity by mentoring other engineers and interviewing candidates
What we offer
What we offer
  • Competitive salary and equity in a fast-growing start-up
  • We serve lunch every weekday, plus a variety of snack foods and a fully stocked kitchen
  • Regular compensation reviews - we reward great work
  • Pension scheme & match up to 4%
  • Peace of mind with life assurance, as well as comprehensive health and dental insurance for you and your dependents
  • Flexible paid time off policy
  • Paid maternity leave, as well as 6 weeks paternity leave for fathers
  • Cycle-to-Work Scheme
  • MacBooks are our standard, but we also offer Windows for certain roles when needed
  • Fulltime
Read More
Arrow Right

Senior Software Engineer-Platform Backend

We are looking for Senior Engineer Software to be a part of a group with the men...
Location
Location
Israel , Tel Aviv
Salary
Salary:
Not provided
paloaltonetworks.com Logo
Palo Alto Networks
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • BS in Computer Science, equivalent knowledge or equivalent military experience
  • 4+ years of software engineering experience – Must
  • Experience in distributed cloud products
  • Experienced with a variety of database technologies (Mysql / Cassandra / Google BigQuery Amazon Redshift / ElasticSearch)
  • Experience with writing CI–CD pipelines – advantage
  • Experience in designing, building and maintaining a scalable server side application
  • Experience in Go / Python – an advantage
  • Experience with GCP – advantage
  • Experience with Kubernetes/Docker – advantage
  • Knowledge of the cyber field – advantage
Job Responsibility
Job Responsibility
  • Responsible for the complete software development life cycle including requirement analysis, design, development, deployment, and support
  • Drive ideas and initiatives, making innovation a reality
  • Design and build an infrastructure that supports billions of events per second, storing, processing and making them accessible and visible to the user while collaborating with the industry's leading cyber products
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

We’re seeking a Senior Software Engineer to join our Desktop team, working on a ...
Location
Location
United States
Salary
Salary:
131000.00 - 194000.00 USD / Year
anaconda.com Logo
Anaconda
Expiration Date
February 17, 2026
Flip Icon
Requirements
Requirements
  • Ability to work East Coast hours
  • 8+ of professional software development experience
  • Production experience in shipping Electron-based desktop applications for Windows, macOS, and Linux
  • Proficiency in React, TypeScript, and modern JavaScript
  • experience with CSS/SASS, component libraries (e.g., KendoReact)
  • Strong knowledge of Node.js, Express, and persistent storage tools (e.g., electron-store)
  • solid Python experience for service integration
  • Ability to identify issues proactively, analyze root causes, and collaborate effectively to implement solutions
  • Passion for creating user-friendly applications and a willingness to iterate based on user feedback
  • You embody our values of Clarity, Care and Candor
Job Responsibility
Job Responsibility
  • Design, develop, and ship features and improvements to our Electron-based desktop application, ensuring reliability and performance across Windows, macOS, and Linux
  • Lead technical decisions around React, TypeScript, and component architecture, setting patterns that scale as the team grows
  • Investigate and resolve complex issues proactively, analyzing root causes and collaborating with the team to implement solutions that improve stability and user experience
  • Integrate Python environment tools (Conda/Mamba) and services into the desktop application, bridging our Python ecosystem with modern web technologies
  • Partner with Product and UX to translate user feedback and requirements into technical solutions, shipping iteratively and learning from real-world usage
  • Mentor and collaborate with other engineers on the team, sharing expertise in desktop development and modern JavaScript tooling
  • Contribute to cross-functional initiatives with partner teams, strengthening integrations and expanding what's possible in the desktop and artifact ecosystem
What we offer
What we offer
  • Flexible Vacation Policy
  • Medical, Dental, and Vision Insurance
  • Short Term and Long Term Disability
  • Paid Parental Leave
  • Monthly Wellness Stipend
  • Employee Assistance Program and Mental Health Resources
  • Fulltime
Read More
Arrow Right

Senior Software Engineer I, Backend

As a Senior Software Engineer I at Aledade, we maintain, improve, and expand our...
Location
Location
United States
Salary
Salary:
Not provided
aledade.com Logo
Aledade, Inc.
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • BS/BTech (or higher) in Computer Science, Engineering or a related field
  • 4+ years experience as an engineer building full-stack web applications as part of a cross-functional team
  • 3+ years of experience working with SQL or other database querying language on large multi-table data sets
  • 2+ years of experience acting as a trusted technical decision-maker in a team setting, solving for short-term and long-term business value
  • 2+ years of experience coaching other engineers
Job Responsibility
Job Responsibility
  • Develop and implement scalable and performant solutions
  • Partner, as a peer, with Engineering Managers, Product Managers, and stakeholders throughout Aledade to develop and execute technical roadmaps using Agile processes
  • Mentor and coach more junior engineers including thorough pull request reviews for other developers and be receptive to critical feedback on your own work
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

Perk (formerly TravelPerk) is the intelligent platform for travel and spend mana...
Location
Location
United Kingdom , Edinburgh
Salary
Salary:
Not provided
yokoy.io Logo
Yokoy
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Product Engineering mindset
  • Pragmatism and obsession for simplicity, efficiency, and performance
  • Extensive experience in similar roles building technically complex products in any web programming language
  • An expert level at server-side, client-side or full stack development
  • Obsession for quality and testing
  • Eager to learn new technologies and frameworks
  • Strong communication skills
Job Responsibility
Job Responsibility
  • Product development in Python/Django and/or React of a travel-related web-based product
  • Integrations between our product to 3rd party APIs
  • System architecture design, implementation, and testing
  • Work in an Agile environment with strong attention to a well-documented code, unit testing, and continuous integration
  • Being able to mentor, coach, and train other colleagues as a domain expert
What we offer
What we offer
  • A competitive compensation package, including equity options in Perk
  • 25 days annual leave plus bank holidays
  • Company Pension Plan with Aviva
  • Private medical insurance from Bupa
  • Life insurance with Zurich
  • Income Protection + Wellbeing App with Unum
  • Access to voluntary dental insurance through Bupa
  • Tax-efficient schemes such as Cycle2Work & electric car leasing via Octopus
  • Discounts on 12-month gym memberships with GymFlex
  • Spring Health - Get access to 12x therapy & 12x coaching sessions per year! - a mental health support tool with access to therapists year round
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

The Wikimedia Foundation is looking for a Senior Software Engineer to join our t...
Location
Location
United States of America
Salary
Salary:
141352.00 - 175725.00 USD / Year
wikimediafoundation.org Logo
Wikimedia Foundation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Being comfortable working in a semi-ambiguous environment, similar to that of a startup
  • Experience in supporting complex web applications running on Amazon Web Services or other comparable cloud platforms
  • Experience working with Kafka or similar distributed event processing systems
  • Experience working with Nodejs and Go applications
  • Comfortable with configuration management and orchestration tools (ECS, Kubernetes), and modern observability infrastructure (monitoring, metrics and logging)
  • Aptitude for automation and streamlining of tasks
  • Comfortable with shell and scripting languages used in an SRE/Operations engineering context (e.g. Python, Go, Bash, Ruby, etc.)
  • Good understanding of Linux/Unix fundamentals and debugging skills
  • Strong English language skills and ability to work independently, as an effective part of a globally distributed team
  • B.S. or M.S. in Computer Science or equivalent in related work experience
Job Responsibility
Job Responsibility
  • Bringing your creativity to improve our current infrastructure
  • Being a key part of planning our future technical roadmap
  • Maintaining and improving the reliability of highly used commercial data feeds
  • Supporting new code/feature deployments
  • Troubleshooting, debugging and following-up on emerging issues in our application stack and its surroundings
  • Assisting in the architectural design of new services and making them operate at scale
  • Incident response, diagnosis and follow-up on system outages or alerts across Wikimedia Enterprise’s production infrastructure
  • Sharing our values and work in accordance with them
  • Fulltime
Read More
Arrow Right
Jobs by Category
Art and Entertainment Jobs Banking Jobs Call Center Jobs Construction Jobs Consulting Jobs Customer Service Jobs Education Jobs Energy Jobs Finance Jobs Gastronomy Jobs Health and Beauty Jobs Hospitality and Tourism Jobs Human Resources Jobs Insurance Jobs IT - Administration Jobs IT - Software Development Jobs Legal Jobs Logistics Jobs Manufacturing Jobs Marketing, Digital Marketing, SEO, SEM Jobs Media Jobs Nursing Jobs Office Administration Jobs Pharmacy Jobs Physical Work Jobs Public Relations Jobs Public Sector Jobs Purchasing Jobs Quality Control Jobs Real Estate Jobs Research and Development Jobs Sales Jobs
Job Positions Jobs by Country
United States Jobs United Kingdom Jobs India Jobs Canada Jobs Australia Jobs Germany Jobs Ireland Jobs Poland Jobs
Company
Blog About Us Contact
Follow Us
Facebook
X (Twitter)
LinkedIn
Instagram
© 2026 CrawlJobs Ltd. All Rights Reserved
Terms & Conditions Privacy Policy