Jobs Python

We are continuously expanding and are looking for a skilled Senior Python Developer to join our team and contribute to the development of an innovative AI-powered platform.
 

Ideally, you should have strong experience in backend development, AI/LLM-based solutions, and distributed systems, along with a solid understanding of cloud infrastructure and modern automation technologies.
 

This position will play a key role in designing and developing scalable AI-driven solutions, collaborating closely with cross-functional teams, and contributing to the architecture and evolution of next-generation intelligent automation systems.

Responsibilities:

• Design, develop, and maintain scalable backend services using Python

• Build and improve AI-powered workflows and autonomous agent systems

• Develop integrations with LLM providers and AI frameworks

• Implement browser automation and orchestration solutions

• Design and optimize RAG pipelines and context-aware AI systems

• Collaborate with cross-functional teams to deliver high-quality solutions

• Participate in architecture discussions and technical decision-making

• Optimize system performance, scalability, and reliability

• Mentor team members and contribute to engineering best practices

• Stay up to date with advancements in AI, LLMs, and automation technologies

Requirements:

• 5+ years of commercial experience with Python

• Technical education (Computer Science, Software Engineering, or related field)

• Strong experience with backend development and distributed systems

• Commercial experience with AI/LLM-based solutions

• Experience with LangChain, LangGraph, OpenAI API, or similar AI frameworks

• Strong understanding of RAG architectures and AI agent workflows

• Experience with FastAPI and/or Flask

• Experience with AWS cloud services

• Experience with Docker and Kubernetes

• Solid understanding of CI/CD and DevOps practices

• Experience working with relational and non-relational databases

• Strong problem-solving and analytical skills

• Upper-Intermediate level of English or higher
 

Tech Stack:

Python, FastAPI, Flask, AWS, Docker, Kubernetes, PostgreSQL, MongoDB, Redis, Pinecone, OpenAI API, LangChain, LangGraph, Langfuse, Celery, Puppeteer, Terraform, CI/CD.

Nice to Have:

• Experience with browser automation systems

• Experience building AI agents or autonomous workflows

• Experience with remote execution environments

• Understanding of observability and monitoring for AI systems

• Previous experience working on AI automation or SaaS platforms
 

What we offer:

• IT Club membership

• 18 days of vacation + 8 days of paid state holidays

• Health insurance

• Compensation for educational courses, training, and certificates

• Compensation for sport activities

• Cozy and pet-friendly office

• Regular office treats & snacks

• Office relax zone with PS4, VR, table games, table tennis, aero hockey, mini football table, and gymnastic ladder

We're hiring a full-time Django developer to help with rebuild of our application. We are changing our internal application from Symfony to Django, and need someone to assist with the rebuild. Currently there is 1 developer on the rebuild, and we looking to hire an additional Django developer to speed up developement.

We are looking for a developer that doesn't just do developement, but is also a product person who understands the business logic behind tasks, and how users will be using it. Also will help make architecture decisions.

Our product (BookingAgentInfo.com) connects businesses with celebrities and influencers for endorsements, brand partnerships, and event bookings.

REQUIREMENTS: 

Must Have: 

- 5+ years Django/Python experience 

- Built systems from scratch (show us 2-3 examples) 

- Data migration experience (800K+ records preferred)

- Can work independently with clear requirements

- Excellent English communication (work with non-technical stakeholders) 

- Ownership mindset (this is YOUR system long-term) 

- 4+ hours overlap with US Eastern) 

- Must be upper-intermediate English speaker 

Strong Plus: 

- Experience rebuilding legacy systems 

- Django Admin customization expertise 

- API integration experience (Spotify, social platforms) 

- Interest in AI/ML (future roadmap) 

- Have owned a codebase long-term before 

- Comfortable being "the developer" on a project 

- Experience with Symfony is a plus but not required

About the client:
Our client is a  cutting-edge, technology focused SaaS company that provides a better way of detecting and managing risks that may impact the outcome of clinical trials. Their solutions are driven by a unique set of algorithms that interrogate clinical and operational data in real-time centrally to conveniently illuminate outliers and anomalies in data.

Role description
You will join a 100+ strong Engineering team driving the future of data-driven statistics, machine learning, and AI software solutions. As part of a talented group of Python developers within a dynamic, fast-scaling company, you will tackle meaningful engineering challenges — and now, you will be at the forefront of integrating AI-assisted development practices into the team's everyday workflow. Our backend engineers primarily work with Python and FastAPI, broader tech stack includes: Kubernetes, Docker, Flask, Pyramid, Git, MySQL, Mongo, Azure Cosmos Db, Celery, Temporal

Responsibilities:

•    Design, build and maintain robust, scalable Python services and APIs
•    Integrate and extend AI/LLM capabilities using the OpenAI API and related tooling
•    Accelerate development velocity through effective use of GitHub Copilot and AI-assisted code review
•    Apply SDD practices to ensure features are specification-aligned and well-documented from day one
•    Refactor existing codebases and perform thorough peer code reviews
•    Solve complex performance bottlenecks and architectural challenges at scale
•    Collaborate with Product and Design to translate end-user needs into pragmatic technical solutions
•    Champion engineering best practices, clean code principles and knowledge sharing within the team
 
Requirements: 
•    6+ years of professional software development experience
•    Strong Python expertise — production-grade services, libraries and tooling
•    Proven experience building and consuming REST-based web services
•    Daily use of GitHub Copilot or equivalent AI coding assistants in a professional context
•    Familiarity with SDD (Specification-Driven Development) workflows
•    Working knowledge of BMAD delivery methodology for AI/ML features
•    Solid understanding of SQL and/or NoSQL databases
•    Clear understanding of Agile/SCRUM methodology
•    Strong grasp of software design and architectural patterns (SOLID, Clean Architecture, etc.)
•    Confident written and spoken English for daily collaboration in an international team

Nice to have: 
•    Containerisation — Docker, Kubernetes or equivalent orchestration platforms
•    Background in clinical data, life sciences or regulated software environments
•    Contributions to open-source AI/ML projects
•    Experience working with Azure, understanding of CI/CD

Company Description

Are you a seasoned engineer passionate about building scalable, high-performance systems? This Senior-level role offers the opportunity to work remotely with talented teams across Europe, Ukraine, and LATAM.

At Sigma Software, we deliver cutting-edge solutions for global customers, combining technical excellence with a service-minded approach. In this role, you will join a distributed team to architect and evolve an advanced Ads platform, contributing to both innovation and stability.

Why join us? You will work on complex, high-impact systems, collaborate with international experts, and enjoy the freedom to shape architecture and technical patterns that drive long-term success.

CUSTOMER

We partner with a leading company in the AdTech space, delivering high-performance, scalable solutions that empower advertisers to manage campaigns, optimize targeting, and analyze results in real time. The Customer values innovation, reliability, and long-term collaboration, and operates globally with distributed teams in Europe, LATAM, and other regions.

PROJECT

The project focuses on building and evolving core systems for an advanced Ads platform integrated into a product for the interior decor industry. This product enables users to preview and visualize home items before purchase, enhancing shopping experiences both online and in-store.

Job Description

• Design, develop, and maintain APIs and services supporting ad campaign management, targeting, delivery, attribution, and reporting
• Architect scalable, reliable, and high-performance distributed systems
• Optimize systems for high-throughput and low-latency event/data processing
• Drive architectural decisions and establish development patterns
• Collaborate with distributed teams to ensure seamless integration and delivery
• Mentor and guide other engineers, fostering technical excellence

• Ensure code quality, maintainability, and alignment with long-term product goals

   

Qualifications

• At least 5 years of commercial experience in building scalable, high-performance systems
• Hands-on experience with AdTech solutions such as DSP, SSP, ad exchange, prebid, Google Ad Manager, or openRTB
• Strong proficiency in Python, preferably with the Django framework
• Solid knowledge of computer science fundamentals, including data structures, algorithms, and distributed systems
• Good understanding of distributed system architecture with a focus on data availability, reliability, and performance
• Practical experience with Kubernetes, PostgreSQL, and AWS

• Upper-Intermediate level of English

   

WILL BE A PLUS

• Experience with dbt and Redshift

• Familiarity with interior decor industry solutions

   

Additional Information

PERSONAL PROFILE

• Attention to detail and quality
• Excellent communication skills
• Leadership mindset, proactiveness

We at Sigma Software are looking for a Python Developer to join an exciting project for a global telecommunications leader. 

This is a full-time position based in Ukraine with the flexibility of remote work. You will be part of a skilled Agile team building a high-impact web application that manages and tracks hardware inventories for millions of users. 

At Sigma Software, we value innovation, professional growth, and work-life balance. You’ll enjoy working in a collaborative environment and contributing to impactful solutions.

CUSTOMER 
Our customer is a leading telecommunications company recognized for delivering innovative, large-scale technological solutions. Operating globally, they provide advanced communication services and infrastructure to millions of users and businesses. Known for their commitment to cutting -  edge technology, scalability, and reliability, they offer a dynamic and forward-thinking work environment. 

PROJECT 
The project involves developing a web application to manage and  track customers' hardware inventories. It supports the full lifecycle of hardware contracts and products,  enabling efficient reporting, monitoring, and operational control. The  application integrates with existing systems, leverages modern frameworks, and follows SAFe Agile methodology to ensure high-quality delivery. 

Key Technologies: Python, Django, Django REST Framework, PostgreSQL, Celery, AWS, Unix, Bash, Angular/React 

Job Description

• Design and implement well-structured, maintainable, and robust code solutions
• Develop new features and components, perform refactoring, debugging, and ongoing maintenance
• Conduct peer code reviews and adhere to established engineering practices
• Perform unit and integration testing to ensure code quality
• Analyze requirements and prepare detailed technical designs for features
• Create and maintain technical documentation
• Participate in customer meetings, including conference calls and face-to-face sessions

• Actively contribute to SAFe Agile ceremonies, including estimation, grooming, and planning sessions

   

Qualifications

• 5+ years of experience in Python
• Practical expertise with Django, Django REST Framework (DRF), and Django ORM
• Solid understanding of PostgreSQL
• Experience writing unit tests using Python’s testing frameworks (e.g., TestCase)
• Familiarity with Celery for task scheduling and asynchronous processing
• Experience with AWS and Unix-based systems
• Bash scripting skills
• Experience with Angular or React
• At least Upper - Intermediate level of English

WILL BE A PLUS:

• Experience with microservices architecture
• Knowledge of Docker/Kubernetes
• Familiarity with CI/CD pipelines
• Understanding of telecom industry specifics

PERSONAL PROFILE:

• Proactive and detail-oriented
• Strong communication skills
• Ability to work effectively in distributed teams
• Adaptable and open to feedback
• Collaborative mindset

Senior NLP & Python Developer

Department: e-Health & AI
Reporting to: Head of AI & Data
Working hours: Full-time, 9:00 AM - 6:00 PM CET

Project Overview

We are looking for a Senior NLP & Python Developer to join a product team building a Clinical Trial Management System (CTMS) for research sites.

The platform helps clinical research organizations activate and manage studies efficiently while ensuring full regulatory compliance. A major component of the system is an AI-powered protocol intelligence engine that analyzes complex clinical trial protocols (100–400+ page medical documents) and converts them into structured workflows.

The AI system extracts and processes:

* Schedule of Assessments (SoA)
* Visit structures and timelines
* Inclusion / Exclusion criteria
* Investigational product requirements
* Regulatory and operational tasks

This is a technically demanding environment requiring:

* RAG pipeline architecture
* medical document parsing
* structured data modeling
* deterministic AI output design
* traceability and auditability
* validation-ready engineering practices aligned with regulated environments

Tech Stack

Backend / Infrastructure

* Python 3.x
* FastAPI
* SQLModel / SQLAlchemy
* PostgreSQL
* pgvector
* Docker / Docker Compose
* Celery
* Redis
* RabbitMQ

AI / NLP

* LangChain
* LangGraph
* RAG pipelines
* embeddings
* vector search
* LLM orchestration
* NER models
* VLMs
* document extraction pipelines

Engineering / Quality

* CI/CD
* structured logging
* observability / monitoring
* automated testing
* secure coding practices

Team Structure

Cross-functional product team including:

* Senior ML/Python Engineer
* ML Architect
* Frontend Engineer
* QA Engineer
* Business Analyst
* Project Manager

Responsibilities

AI / NLP Architecture

* Design and optimize RAG-based pipelines for medical protocol parsing
* Refactor LangChain workflows for scalability, modularity, and cost efficiency
* Implement dynamic model orchestration based on task complexity
* Improve explainability and traceability of AI outputs
* Build deterministic transformation layers from extracted AI output to executable workflows
* Optimize vector search performance
* Integrate external regulatory and medical knowledge sources
* Develop document/content classification pipelines

Backend & Data Architecture

* Design scalable PostgreSQL schemas
* Model complex clinical entities:
   * Studies
   * Visits
   * SoA
   * Eligibility criteria
   * Regulatory tasks
* Ensure audit trail capabilities
* Improve database performance and transactional consistency

System Hardening & Validation

* Implement monitoring and structured logging for AI pipelines
* Improve reproducibility and explainability
* Expand automated testing coverage
* Support validation readiness for regulated environments
* Enforce secure engineering practices

DevOps & Scalability

* Maintain Docker-based deployments
* Improve CI/CD workflows
* Support monitoring and error tracking
* Ensure scalability for multi-site / multi-study usage

Required Experience

Backend / Architecture

* 5+ years with Python
* Strong FastAPI experience
* Deep SQLAlchemy expertise
* Strong PostgreSQL knowledge (schema design, indexing, migrations, tuning)
* Experience with Docker-based deployments
* Experience with Celery / Redis / RabbitMQ
* Strong system architecture skills
* Experience with document extraction systems

NLP / AI

* Hands-on experience with LangChain
* Production RAG implementation experience
* Experience with vector databases (preferably pgvector)
* Knowledge of embeddings and model orchestration
* Prompt engineering experience
* Experience designing deterministic AI systems

Domain Experience

Experience in regulated industries is strongly preferred:

* healthcare
* life sciences
* fintech
* other compliance-heavy environments

Nice to Have

* GxP / validation-ready AI systems experience
* experience with pre-commit / Ruff / Poetry
* large-scale system re-architecture experience

Ideal Profile

Looking for someone who:

* thinks architecturally, not just feature-by-feature
* can balance AI innovation with production reliability
* is comfortable in early-stage product environments
* communicates well across engineering, product, and QA teams
* has real production AI/NLP ownership, not only experimentation or prototypes

Start date: beginning of June
Duration: 6 months
Working hours: 9 AM – 6 PM CET
Payment terms: 40 days
Location restrictions: No Russian or Belarusian nationals, including relocated individuals. Proof of nationality required (name, nationality, and document validity only: no sensitive data!)

CodeIT is a service product development company. We know how to transform business ideas into profitable IT products. We are looking for a skilled and experienced Python Software Engineer(Contractor) to contribute to an exciting project.

Project Description: 

AI-driven cybersecurity SaaS platform focused on building next-generation Security Operations Center solutions. The product helps companies proactively detect and neutralize cyber threats through advanced automation and AI technologies.

The team is actively scaling internationally and is looking for experienced Python engineers to contribute to high-impact product initiatives, backend architecture, and platform scalability within a fast-growing, innovation-driven environment.

Requirements:

- 5+ years of professional experience in back-end development, preferably in Python
- Experience with FastAPI and RESTful APIs
- Experience conducting code reviews and providing constructive feedback to team members
- Strong architectural thinking and problem-solving skills
- Excellent communication skills
- Experience with modern SaaS technologies, including: Docker, Kubernetes / Databases (PostgreSQL, Clickhouse) / Queuing (Kafka, Celery) / Caching (Redis)
- Experience writing automated tests (e.g., Jest, Playwright, etc.)
- English proficiency at B2 level or higher

Nice to have:

- Experience in cybersecurity
- Experience working with LLMs
- Familiarity with Kubernetes and Docker ecosystems

About ChatRevenue.ai 

ChatRevenue.ai was founded by Ratmir Timashev (founder of Veeam) and Vlad Voskresensky (founder of Revenue Grid) to create the next generation of CRM systems.  

We’re building an AI-native CRM platform that completely redefines how sales automation works.  
By structuring data for intelligent automation, we enable agentic AI to design workflows, assist Sales Leaders and Reps in real time, and generate predictable sales funnels – all through a simple, chat-driven interface.  

Our mission: to build a CRM that works for User, not the other way around. 

About the role 

We are looking for a Principal Backend Engineer with strong Python experience and a proven track record of building and owning production backend systems. 

This is a hands-on engineering role focused on: 

• Python backend 
• FastAPI 
• Data-heavy systems 
• AI / LLM product features 
• System architecture and scalability 

We are looking for someone who can take ownership of a backend domain, make technical decisions, and build reliable systems from idea to production. 

What you will do 

• Design, build, deploy, and maintain core backend services using Python and FastAPI 
• Own backend architecture, data flows, and technical decisions in your domain 
  Build and scale data-intensive systems, integrations, and pipelines 
• Work on AI / LLM-driven product features together with the engineering team 
• Improve system performance, scalability, reliability, and observability 
• Contribute to engineering practices: testing, CI/CD, security, and code quality 
• Work closely with product and engineering to deliver high-impact features 

What we are looking for 

• 7+ years of hands-on backend development experience 
• Strong commercial experience with Python in production 
• Python should be your primary backend language 
• Strong experience with FastAPI, APIs, Docker, Git, and CI/CD 
• Experience owning backend systems end-to-end: architecture, performance, data, reliability 
• Strong knowledge of PostgreSQL and data-heavy systems  
• Experience building distributed, scalable, or high-load systems 
• Good understanding of system design and performance optimization 
• Ability to work with ambiguity and take ownership without micromanagement 
• High ownership, independence, and product mindset 

Nice to have 

• Experience integrating LLMs / AI into backend systems 
• Experience with RAG, embeddings, vector databases, or AI assistants 
• Experience with Kafka, Azure Event Hub, or other event-driven systems 
• Experience with Kubernetes and cloud infrastructure, especially Azure 
• Experience building ETL / ELT pipelines 
• Experience working with structured and unstructured data 
• Production observability, tracing, monitoring, and optimization experience 

This role is likely a strong match for people who 

• Enjoy owning backend systems end-to-end, not just implementing isolated tasks 
• Feel strongest in Python as their main backend language 
• Have worked on production systems where reliability, performance, and scale matter 
• Want to have direct influence on technical decisions and architecture 
• Are comfortable working in an early-stage, high-ownership environment 

What we offer 

• Remote-first setup 
• Flexible schedule aligned with European time zones 
• A core engineering role in an AI-native product 
• Direct influence on technical decisions and architecture 
• Real ownership and visible product impact 
• Opportunity to grow into technical leadership / domain ownership 

If you have strong Python backend fundamentals, experience owning production systems, and interest in AI-native products, we’d love to talk. 

We’re looking for a Senior Backend (Python) Engineer to join our team. 

Work Location: Poland (Krakow), Slovakia (Kosice) or Czechia (Prague). 

Hybrid: 2+ days per week in the office, the rest remote.

The Mission

We are building a complex, real-time ecosystem for micromobility and logistics systems sim—where split-second logistics meet seamless user experiences. We need a Senior Backend (Python) Engineer powerhouse to lead the development of our Customer Mobile Web App and our high-utility Internal Admin Panels.

You’ll be the bridge between the sleek, high-performance interface our users see and the robust, scalable Python services that power the logic.

Key Responsibilities

• Mobile-First Frontend: Architect and scale our React-based mobile web application, ensuring 60fps performance and offline-first capabilities.
• Operational Control Centers: Build dense, data-heavy Admin Panels that allow our operations team to monitor real-time logistics, manage users, and handle complex dispatching.
• Scalable Backend: Design and maintain performant APIs using Python (FastAPI/Django) to handle high-concurrency event streams.

• End-to-End Ownership: From database schema design to CSS transitions, you’ll own the entire feature lifecycle.

   

Who You Are

• The Architect: You don't just "write code"; you design systems. You understand how a change in a Python microservice ripples out to the React frontend.
• UX Enthusiast: You understand that an Admin Panel requires different UX "muscle" (efficiency and density) than a mobile app (simplicity and speed).
• Problem Solver: You’ve dealt with the "hard stuff"—real-time GPS tracking, race conditions in booking logic, or complex state management.
• Pragmatist: You balance the need for clean, tested code with the reality of shipping features in a fast-paced environment.

Will be plus Led transformation of standalone product into scalable SaaS platform.

Why Join Us?

Work on a product with immediate, real-world impact.

A "no-red-tape" environment where your architectural decisions stick.

Layer Technology

Frontend - React Native Expo, Styled Components, Mobx/Redux, WebSockets. Experience with Firebase, Expo SDK, Expo Modules.

Backend-  Python (FastAPI / Django / Flask)

Database - PostgreSQL, Redis (for real-time caching)

Infrastructure - AWS/GCP, Docker, Kubernetes

Real-time-  WebSockets / Socket.io (for "Uber-style" live tracking)

Requirements & Skills - 

• Proven experience in Python and backend development using FastAPI, Django, or Flask.
• Strong understanding of geospatial data structures (GeoJSON, latitude/longitude).
• Understand principles of cloud native development
• Usage of docker for development environment
• Familiar with Kubernetes (application lifecycle and environment)
• Familiar with Helm charts (their maintenance and usage)
• Familiar with ArgoCD, Grafana, Github
• Nice to have - familiarity with helmfile

Required Skills

• 5+ years of experience with Python, primarily in backend development
• Python: Advanced
• FastAPI / Django / Flask

Language Skills

English: Upper intermediate (B2)

We offer

• Challenging and rewarding tasks with autonomy in a distributed international team
• Motivated colleagues who foster a collaborative environment
• Competitive salary based on your experience and expertise
• 20 vacation days + state holidays + your birthday off (for full-time employees)
• Sick leave coverage (5 days for full-time employees)
• Opportunities for regular business trips abroad

Department: e-Health & AI
Reporting to: Head of AI & Data
Working hours: Full-time, 9:00 AM - 6:00 PM CET

Project Overview
We are looking for a Senior NLP & Python Developer to join a product team building a Clinical Trial Management System (CTMS) for research sites.
The platform helps clinical research organizations activate and manage studies efficiently while ensuring full regulatory compliance. A major component of the system is an AI-powered protocol intelligence engine that analyzes complex clinical trial protocols (100–400+ page medical documents) and converts them into structured workflows.

The AI system extracts and processes:
* Schedule of Assessments (SoA)
* Visit structures and timelines
* Inclusion / Exclusion criteria
* Investigational product requirements
* Regulatory and operational tasks

This is a technically demanding environment requiring:
* RAG pipeline architecture
* medical document parsing
* structured data modeling
* deterministic AI output design
* traceability and auditability
* validation-ready engineering practices aligned with regulated environments

Tech Stack
Backend / Infrastructure
* Python 3.x
* FastAPI
* SQLModel / SQLAlchemy
* PostgreSQL
* pgvector
* Docker / Docker Compose
* Celery
* Redis
* RabbitMQ

AI / NLP
* LangChain
* LangGraph
* RAG pipelines
* embeddings
* vector search
* LLM orchestration
* NER models
* VLMs
* document extraction pipelines

Engineering / Quality
* CI/CD
* structured logging
* observability / monitoring
* automated testing
* secure coding practices

Team Structure
Cross-functional product team including:
* Senior ML/Python Engineer
* ML Architect
* Frontend Engineer
* QA Engineer
* Business Analyst
* Project Manager

Responsibilities
AI / NLP Architecture
* Design and optimize RAG-based pipelines for medical protocol parsing
* Refactor LangChain workflows for scalability, modularity, and cost efficiency
* Implement dynamic model orchestration based on task complexity
* Improve explainability and traceability of AI outputs
* Build deterministic transformation layers from extracted AI output to executable workflows
* Optimize vector search performance
* Integrate external regulatory and medical knowledge sources
* Develop document/content classification pipelines

Backend & Data Architecture
* Design scalable PostgreSQL schemas
* Model complex clinical entities:
  * Studies
  * Visits
  * SoA
  * Eligibility criteria
  * Regulatory tasks
* Ensure audit trail capabilities
* Improve database performance and transactional consistency

System Hardening & Validation
* Implement monitoring and structured logging for AI pipelines
* Improve reproducibility and explainability
* Expand automated testing coverage
* Support validation readiness for regulated environments
* Enforce secure engineering practices

DevOps & Scalability
* Maintain Docker-based deployments
* Improve CI/CD workflows
* Support monitoring and error tracking
* Ensure scalability for multi-site / multi-study usage

Required Experience
Backend / Architecture
* 5+ years with Python
* Strong FastAPI experience
* Deep SQLAlchemy expertise
* Strong PostgreSQL knowledge (schema design, indexing, migrations, tuning)
* Experience with Docker-based deployments
* Experience with Celery / Redis / RabbitMQ
* Strong system architecture skills
* Experience with document extraction systems

NLP / AI
* Hands-on experience with LangChain
* Production RAG implementation experience
* Experience with vector databases (preferably pgvector)
* Knowledge of embeddings and model orchestration
* Prompt engineering experience
* Experience designing deterministic AI systems

Domain Experience
Experience in regulated industries is strongly preferred:
* healthcare
* life sciences
* fintech
* other compliance-heavy environments

Nice to Have
* GxP / validation-ready AI systems experience
* experience with pre-commit / Ruff / Poetry
* large-scale system re-architecture experience

Ideal Profile
Looking for someone who:
* thinks architecturally, not just feature-by-feature
* can balance AI innovation with production reliability
* is comfortable in early-stage product environments
* communicates well across engineering, product, and QA teams
* has real production AI/NLP ownership, not only experimentation or prototypes



Start date: beginning of June
Duration: 6 months
Working hours: 9 AM – 6 PM CET
Payment terms: 40 days

About The Role

We are looking for a Senior Python Optimization Engineer / Gurobi Modeler to support a Python-based Unit Commitment model that uses Gurobi as a MILP solver.  

This is expected to be a long-term, part-time engagement with regular overlap with US Eastern Time. The role will help maintain, troubleshoot, and extend the existing model as it becomes part of a standard customer offering. Workload may vary over time, with occasional ramp-up during customer implementations and lighter ongoing support between projects.

The ideal candidate combines strong Python engineering, practical MILP modeling experience, and hands-on Gurobi knowledge. Experience in power systems, energy markets, or Unit Commitment is strongly preferred.

Key Responsibilities

• Maintain and enhance an existing Python-based Unit Commitment optimization model.
• Troubleshoot model behavior, infeasibility issues, solver performance, and customer-specific cases.
• Extend the model with new constraints, business rules, objective terms, or configuration options.
• Provide ongoing part-time support for issues that arise between implementation projects.
• Improve model maintainability, structure, documentation, and repeatability.
• Work with client-side product teams and engineering stakeholders to clarify requirements and validate results.
• Document model assumptions, formulation logic, known limitations, changes, and troubleshooting steps.

Technical Requirements

Required:

• Strong Python development experience.
• Hands-on experience with Gurobi.
• Practical experience building, maintaining, or extending MILP optimization models.
• Ability to debug optimization models, including infeasibility, constraint behavior, and solver performance issues.
• Experience working with existing codebases and improving model maintainability.
• Ability to understand mathematical formulations and translate them into production-quality Python code.
• Strong analytical and problem-solving skills.
• Good written and spoken English communication.
• Reliable availability for a part-time engagement.
• Regular working-hours overlap with US Eastern Time.

Nice To Have:

• Experience with Unit Commitment models.
• Experience in power systems, electricity markets, energy optimization, or production cost modeling.
• Familiarity with economic dispatch, reserves, ramping constraints, startup/shutdown logic, min up/down times, renewables, storage, or transmission constraints.
• Experience with pandas, NumPy, or similar Python optimization/data libraries.
• Experience tuning Gurobi models for performance.
• Experience productizing analytical or optimization models for repeat customer use.
• Experience supporting customer implementations or production troubleshooting.
• Ability to explain model behavior and tradeoffs to both technical and non-technical stakeholders.

We are looking for a Senior Python Developer to build and maintain backend services, APIs, and scalable systems. We value strong engineering skills, experience with modern Python frameworks, and the ability to make technical decisions independently.

Candidates with experience in any popular Python framework are welcome: (Django, FastAPI, Flask, Tornado, Pyramid or others)

Responsibilities:

• Develop and maintain backend services and REST/GraphQL APIs
• Design scalable and maintainable application architecture
• Optimize system performance and reliability
• Integrate third-party services and APIs
• Work with databases (PostgreSQL, MySQL, MongoDB, etc.)
• Conduct code reviews and mentor team members
• Write tests and support CI/CD processes
• Collaborate with frontend, DevOps, and product teams

Requirements:

• 5+ years of commercial experience with Python
• Experience with one or more Python frameworks
• Strong understanding of OOP, SOLID principles, and Clean Architecture
• Experience designing and building REST APIs
• Good knowledge of SQL and ORM tools
• Experience with Docker
• Familiarity with Git and CI/CD pipelines

• Experience with cloud platforms (AWS/GCP/Azure) is a plus

   

Nice to have:

• Experience with microservices architecture
• Kubernetes
• Async programming
• Redis, RabbitMQ, Kafka
• AI/ML integrations

• High-load systems experience

   

What we offer:

• Flexible working hours
• Remote-first culture
• Paid vacation and sick leave
• Professional growth opportunities
• Strong engineering team
• Exciting international projects

🌍Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

🧩About the Product:

We power a B2B open finance infrastructure platform that aggregates financial data and initiates payments across institutions, enabling services like real-time underwriting, bank-to-bank transfers, and portfolio analytics.

Operating in a single market with plans for international expansion, the platform handles large-scale data ingestion, event-driven processing, and transaction routing for banks, fintechs, insurers, and retailers, meeting regulatory open finance requirements.

🌟About the Role:

We are seeking a Senior Backend Engineer who can design and own backend systems end-to-end, mentor other developers, and handle production Kubernetes environments. Backend heavy focus role with some minor tasks on frontend. 

You will collaborate with product and engineering, guide technical direction, mentor others, and help shape best practices in microservices, event-driven architecture, and cloud-native systems.

📈Key Responsibilities:

• Architect and implement core backend features using Python, Django, and Celery.
• Design and maintain RESTful APIs and event-driven microservices for data exchange and payment initiation.
• Model, query, and optimize complex datasets in PostgreSQL.
• Deploy, monitor, and troubleshoot services on Kubernetes in AWS (and on-prem OpenShift environments).
• Drive technical designs: define data schemas, service contracts, and CI/CD pipelines.
• Collaborate with product managers to refine requirements and translate them into scalable solutions.
• Mentor and review work of junior and mid-level engineers; share domain knowledge.
• Participate in on-call rotation and incident response to maintain high availability.
• Contribute to lightweight React front-end adjustments when backend integrations require UI support.
• Help set standards, frameworks, and patterns for future development.

💻Required Competence and Skills:

• 5+ years of experience with Python building, designing, and owning backend systems
• Proven expertise in Django, building backend applications and APIs
• Proven experience with Celery (or equivalent task-queue frameworks) 
• Strong background in designing and consuming REST APIs and event-driven microservices.
• Production experience with Kubernetes on AWS.
• Deep knowledge of PostgreSQL - data modeling, indexing, query optimization
• Hands-on with cloud-native services and serverless functions (e.g., AWS Lambda).
• Solid understanding of CI/CD practices and infrastructure as code.
• Experience in diagnosing and resolving performance and reliability issues in high-traffic systems.
• Fluent in English, with strong written and verbal communication skills

➕Nice to Have:

• Experience with Oracle databases or Node.js services.
• Prior work with React for lightweight front-end tasks.
• Familiarity with OpenShift.
• Familiarity with on-prem deployments and integration with corporate environments.

🚀 Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview: Senior-level backend role, ideally approaching Architect level, focused on designing and developing core backend services for ORA. The work enables secure cloud integration with SEF through KMIP and Barbican, requiring deep expertise in cryptography, Kubernetes, and open-source / open-standard solutions.

Tech Stack: Python · Kubernetes · OpenStack · KMIP · Barbican · TLS · CRDs · Distributed Systems

Requirements (Must-have):

• Extensive senior-level backend development experience in Python
• Crypto hands-on experience — must be clearly visible in CV
• Strong knowledge of cryptography — TLS and data encryption
• Practical Kubernetes experience — infrastructure and management layers
• Familiarity with OpenStack
• Experience writing unit and integration tests for backend systems
• Ability to design and work with complex distributed systems and core services
• Fluent English — C1 minimum
• Location: Europe (remote)
  
  Responsibilities:
• Design and develop ORA's core backend services, integrating with KMS via KMIP for components like Barbican and Ceph
• Build and manage Kubernetes-based infrastructure — CRDs, operators, and controllers
• Implement secure communication mechanisms using TLS and advanced encryption methods
• Work closely with architecture and infrastructure teams across management layers
• Create and maintain unit and integration tests for high-quality, reliable code
• Contribute to architectural decisions and provide technical leadership in backend development
  
  Nice to Have At least one of the following is strongly preferred:
• Knowledge of KMIP and secure key management practices
• Experience with Barbican and open-standards integrations
• Experience with cloud convergence concepts and ORA architecture
• Understanding of scalability and performance optimization in microservices
  
  Hiring Process Intro call → Technical discussion → Offer
   

Join our expanding team as a Senior Python Engineer! We’re looking for a proactive tech professional who takes ownership, sweats the details, and takes pride in delivering high-quality software.

About Project:
 

Our client specialises in developing and optimising a large-scale recruitment platform to achieve streamlined hiring processes. By utilising a multi-channel communication module, dynamic document management, and interactive Kanban boards, their goal is to enhance the efficiency of recruitment workflows, delivering seamless candidate engagement and improved organisational productivity.

What will you do?

—Develop and maintain complex platform;

—Work across backend (Python) and frontend (React.js) layers;

—Collaborate with cross-functional teams;

—Write clean, testable, and secure code following best engineering practices;

—Participate in code reviews and improve overall code quality;

—Continuously improve system performance, reliability, and user experience.

What do we expect?

Tech Skills:

—5+ years of experience as a Python Developer;
—Experience with Django, Flask framework;
—Experience with React.js;
—Experience with Azure cloud services;
—Experience with API development;
—Experience with SQL(PostgreSQL);
—Experience with Docker, Kubernetes;
—Experience with CI/CD;
—Understanding of Unit tests;
—Understanding and ability to apply in practice the OOP and SOLID principles;
—Knowledge of Scrum (Agile).

Soft Skills:

—Problem-solving, analytical thinking;
—Attention to detail and code efficiency;
—Ability to work closely with customers, analyse software requirements;
—Keen to constantly learn and improve your own skills, and not afraid to learn new things;
—Strong communication skills;
—At least Upper-Intermediate English level (speaking & writing).

We offer:
—Competitive compensation;
—Flexibility to work from anywhere (fully remotely or in our office in Lviv);
—Accounting Support Services;
—Education budget + corporate education events/trainings;
—Compensation for certifications, fitness, or therapy sessions;

—A dynamic environment where your proactivity is recognised and rewarded.

Application Process:
—Initial screening: call with Recruiter;
—Tech interview;
—Сlient’s interview.

If you're ready to bring your senior-level expertise to a product that truly matters, we’d love to meet you!