Bluegeko

Mobile Developer (.NET) — B2B Contract | Warsaw | Start Immediately

$6,500/month · Full-time · In-office · Relocation bonus · Milestone bonuses · Visa Assistance

The Opportunity

We're building a mobile app that talks to real-world access control and operational systems—secure logins, biometrics, BLE-based access, payments, and reporting, all in one platform. We need a hands-on mobile developer to own the app and ship features fast, working side-by-side with our .NET backend team and directly with the CEO.

This starts as a B2B contract with real potential to grow into a bigger, long-term role—architecture, team leadership, the works—if it's a fit on both sides.

This is a senior-level role only. We need someone with a proven track record—live, shipped apps in production and a portfolio to show it. No juniors, no mid-level, no exceptions.

What You'll Build

• Mobile app features (iOS/Android or cross-platform) — real, production, shipping code.
• Authentication, biometrics, push notifications, and BLE functionality.
• API integrations with our .NET/C# backend.
• Direct input into how the app connects to our customer portal, payments, and reporting systems.
• Fast decisions, zero bureaucracy—you work directly with the CEO and core team.

What You Bring

• Proven track record: Live apps you've shipped that are currently in production, with a portfolio or App Store/Google Play links to prove it.
• Strong senior-level commercial experience—this is not an entry-level role.
• Comfortable working with APIs and collaborating with a backend team (bonus if you know .NET/C#).
• Working knowledge of mobile security fundamentals: authentication, permissions, push notifications, and BLE.
• Independent, clear communicator who delivers.
• Based in Warsaw or willing to relocate, and available to start immediately.

Nice to Have

• .NET/C# experience.
• CRM/CMS experience (e.g. Umbraco).
• Access control or IoT/BLE hardware integration experience.
• Interest in leading a mobile team as the product grows.

What's In It for You

• 6,500/month (B2B contract).
• Relocation bonus if you're moving to Warsaw.
• Milestone bonuses for major deliveries (first release, key integrations, platform go-live).
• Modern Warsaw office.
• Direct access to the CEO—your work shapes the product.
• Fast-moving, low-bureaucracy environment with genuine long-term growth opportunities.

Please include links to live apps or a portfolio with your application. Applications without proof of shipped work will not be considered.

Start immediately. Interview process takes days, not weeks.

Python / C++ Software Engineer – Autonomous Systems

We're looking for a Python / C++ Software Engineer to help build the software powering next-generation autonomous systems.

This role is ideal for an engineer with a strong software engineering background, solid mathematical skills, and an interest in developing advanced control, navigation, and decision-making systems. We're hiring engineers at the Mid to Senior level.

What You'll Do

• Design, develop, and improve software for autonomous control and navigation.
• Build and optimize decision-making and guidance algorithms.
• Test and validate software in both simulation and real-world environments.
• Investigate system performance using logs and diagnostic data.
• Research modern algorithms and technical papers, then implement practical solutions.

What We're Looking For

• 3+ years of experience in software engineering within robotics, machine learning, simulation, game development, or other algorithm-heavy environments.
• Strong programming skills in Python and C++.
• Experience with multithreaded or parallel programming.
• Solid mathematical foundation, including:
  • Linear algebra (vectors, matrices, coordinate transformations)
  • Calculus (derivatives and integrals)

Nice to Have

• Control systems or feedback control knowledge.
• Competitive or algorithmic programming experience.
• Signal processing.
• Machine learning.
• MAVLink.
• Simulation platforms such as Gazebo or AirSim.
• Hardware-in-the-Loop (HIL) or Software-in-the-Loop (SIL) testing.
• Experience with PX4, Betaflight, or ArduPilot.

What We Offer

• Work on advanced autonomous and embedded technologies.
• Competitive compensation package.
• Flexible work options (remote, hybrid, or on-site).
• Ongoing technical learning and career development.
• A collaborative, engineering-driven environment focused on solving complex technical challenges.

We're looking for a remote Software Engineer to help build one of the largest data platforms.

Our platform processes million events every day that power analytics and products used by very large amount of users.

If you enjoy solving large-scale engineering problems, building distributed systems, and working with modern cloud technologies, we'd love to hear from you.

What you'll work on

• Build and improve large-scale data pipelines.
• Develop high-performance batch and streaming applications.
• Design reliable distributed systems.
• Improve platform performance, scalability, and reliability.
• Collaborate with product and engineering teams to deliver production-ready solutions.

Requirements

• 3+ years of software engineering experience.
• Strong Java or Scala skills.
• Experience building distributed systems in the cloud.
• Familiarity with AWS or another major cloud platform.
• Strong problem-solving skills.
• Good English communication.

Nice to Have (not must)

• Python
• Terraform
• CI/CD
• DevOps experience
• SaaS experience

What You'll Get

• Competitive salary
• Paid vacation
• Paid sick leave
• Brand-new MacBook after probation

Senior Python Engineer (FinTech)
 

We are looking for a Senior Python Engineer (Remote) to join our engineering team and help build a modern financial technology platform used by businesses and consumers across the UK.

You'll work alongside experienced engineers and product leaders to develop scalable backend services, contribute to architectural decisions, and deliver reliable cloud-based solutions.

What You'll Do

• Design, develop, and maintain backend applications using Python and Django.
• Build secure, scalable APIs and services for a high-traffic fintech platform.
• Work closely with engineers, product teams, and technical leadership to deliver new features.
• Participate in technical planning, architecture discussions, and sprint execution.
• Deploy and maintain cloud infrastructure on AWS.
• Optimize application performance, reliability, and security.
• Review code, share technical knowledge, and help maintain engineering best practices.

Tech Stack

• Python 3.11
• Django 4.x
• PostgreSQL
• AWS (Lambda, ECS, RDS, DynamoDB, EventBridge)
• Docker
• Terraform
• Pandas
• Polars

What We're Looking For

• 4+ years of professional Python development experience.
• At least 1+ years building applications with Django.
• Strong experience developing cloud-native applications on AWS.
• Solid understanding of REST APIs, databases, and backend architecture.
• Experience working in collaborative Agile teams.
• Good communication skills with professional English (B2 or above).
• Comfortable mentoring teammates and participating in code reviews.

What We Offer

• Remote
• Competitive salary with performance-based rewards.
• Clear opportunities for career progression and technical growth.
• Training budget for courses and professional certifications.
• Regular technical knowledge-sharing sessions.
• A collaborative environment with experienced engineers working on a large-scale fintech product.