Jobs Python

We are looking for an AI/ML Engineer to build and scale AI-powered solutions for real-world use cases. This is a hands-on role focused on developing agentic systems, RAG pipelines, fine-tuning workflows, and production-grade LLM integrations.

Part-time during the first month

Requirements

• 4+ years of commercial development experience (Python is a plus)
• Experience building real AI/ML applications
• Strong understanding of modern AI/ML workflows and LLM ecosystems
• Hands-on experience with ML frameworks such as TensorFlow or PyTorch (JAX is also acceptable)
• Experience with LLM APIs (OpenAI, Claude, etc.)
• Understanding of RAG pipelines and AI workflows
• Experience with APIs and third-party integrations
• Basic prompt engineering skills
• Good communication skills
• Comfortable working in a fast-paced environment

Nice to have

• Experience with LoRA, QLoRA, adapters, or other fine-tuning approaches
• Experience with LLM frameworks such as LangChain or LlamaIndex
• Experience working with clients or enterprise systems
• Background as an AI Engineer, ML Engineer, or Data Scientist

Responsibilities

• Build AI-powered features using LLMs (Claude, OpenAI, etc.)
• Develop and optimize RAG pipelines
• Create AI agents and autonomous workflows
• Fine-tune and adapt ML/LLM models for specific use cases
• Integrate AI solutions into products via APIs
• Collaborate with the team and clients to deliver production-ready solutions

Come Back Agency supports US software and technology companies by running their hiring process. We work with delivery and leadership teams to define roles, screen candidates, and manage interviews. Successful candidates are hired directly by the company and become part of its team.

Employer information:
This position is with a US-based software company providing custom development and AI implementation for North American clients. The team builds and maintains production software, including AI-enabled systems, and works in long-term client engagements. Team members operate as part of an internal, distributed team and collaborate directly with client stakeholders.

About the role:
We are looking for a Python Backend Developer to join a distributed team building and maintaining production software for US-based clients. You will work on real systems, collaborate directly with client stakeholders, and contribute to AI-enabled solutions in a long-term engagement.

What you will do:

• Build and maintain web applications using Python and FastAPI - production code that's clean, testable, and built to last.
• Develop backend systems, integrate third-party APIs, and support frontend teams with reliable endpoints.
• Work with AWS infrastructure: S3, Lambda, EC2, EventBridge, DynamoDB.
• Implement security measures and handle data protection thoughtfully.
• Debug production issues, optimize performance, and keep systems running smoothly.
• Follow industry trends and bring new ideas to the table when it makes sense.

What we are looking for:

• Proven Python experience - real projects you've shipped, not just learned.
• Strong command of FastAPI. 
• Solid grasp of OOP principles, design patterns, and how to apply them in practice.
• Hands-on experience building RESTful APIs and integrating web services.
• Comfortable working with relational databases (MySQL, PostgreSQL) and NoSQL (DynamoDB).
• English communication skills - B1 level.
• Ability to solve problems independently, write clear code, and communicate well with teammates.
• Takes responsibility for their work and doesn't need constant oversight.

Nice to have:

• Experience with AI prompting.
• Experience with Django.
• Familiarity with LangChain or LangGraph.

Hiring stages: Recruiter screening → Test assignment → Skills assessment interview → Final culture fit interview.

What We Offer:

• Working hours aligned with US time zones, typically 16:00–00:00 Kyiv time.
• English lessons to support clear and confident communication.
• Paid vacation and sick days.
• Fully remote work.
• Opportunities for professional growth within the team.
• Structured, personalized onboarding to help you ramp up effectively.

Apply with your resume and a short note outlining your relevant experience. You can also send your resume through our website at comeback.ua. Selected candidates will be contacted by Come Back Agency.

We are seeking a talented and experienced Python Developer to join our team. 

You will be working in a direction that is primarily focused on high-tech developments for the US client in the consulting and financial domains. All projects are aimed at optimizing business processes, ensuring maximum efficiency in work, and helping the client to automate and improve their internal processes. Our team specializes in the use of advanced technologies and, at certain stages of project development, actively utilizes the latest advances in artificial intelligence (AI) and machine learning (ML).  

Responsibilities: 

• Develop and maintain applications using Python, with a focus on integrating AI/LLM,  AWS GlueJobs/Azure Functions and other. 
• Design, build, and deploy machine learning models. 
• Implement ETL processes using AWS GlueJobs/Azure Functions to process and transform large datasets. 
• Collaborate with cross-functional teams to define, design, and ship new features and enhancements. 
• Optimize applications for maximum performance, scalability, and maintainability. 
• Troubleshoot, debug, and resolve software defects and issues. 
• Keep up-to-date with the latest industry trends and technologies to ensure the software is current and competitive. 
• Provide technical guidance and support to other team members. 
• Write clean, maintainable, and well-documented code. 
• Participate in code reviews and contribute to improving code quality. 

Requirements: 

• 3+ years of experience in software development using Python.  
• Hands-on experience with AWS services or Azure Cloud Platform 
• Strong knowledge of web services, API development, and RESTful APIs. 
• Proficient understanding of code versioning tools, such as Git. 
• Excellent problem-solving skills and attention to detail. 
• Strong verbal and written communication skills. 
• Knowledge of frameworks and libraries such as Pandas, FastAPI, SpaCy, etc. 

Preferred Qualifications: 

• Understanding of machine learning concepts, NLP, and LLM. 
• Experience working with other AI and NLP technologies, such as OpenAI's GPT family, Azure OpenAI, PyTorch or related. 
• Knowledge of containerization and orchestration technologies, such as Docker and Kubernetes. 
• Familiarity with agile development methodologies, such as Scrum or Kanban. 
• Intermediate or higher level of English. 

What we offer   

• Continuous learning and career growth opportunities 
• Professional training and English/Spanish language classes   
• Comprehensive medical insurance 
• Mental health support 
• Specialized benefits program with compensation for fitness activities, hobbies, pet care, and more 
• Flexible working hours 
• Inclusive and supportive culture 

This role is ideal for an experienced Python engineer who is confident working with AI-driven workflows, building reliable backend services, and contributing to modern LLM-powered systems. You will focus on developing MCP-based integrations and backend APIs while collaborating with a senior-level engineering team.

NextCRM — продуктова CRM для e-commerce (Prom.ua, Rozetka, Horoshop, Instagram-магазини). Керуємо замовленнями, клієнтами, складом, інтеграціями та автоматизаціями для українських продавців.

Шукаємо сильного Python/Django-розробника, який прийде як друга ключова людина в бекенді — не "ще один розробник", а партнер до нашого Senior-бекендера по архітектурних рішеннях і критичних частинах системи.

Що будеш робити:

• Розробляти та підтримувати бекенд CRM на Django + DRF + PostgreSQL
• Працювати з Celery (асинхронні задачі, черги, планувальники) і Redis
• Будувати та підтримувати інтеграції з зовнішніми API: маркетплейси, логістика, платежі, ПРРО
• Оптимізувати продуктивність (N+1, індекси, кеш, bulk-операції)
• Брати участь в архітектурних рішеннях — ти не "виконуєш таски", ти впливаєш на те, як продукт росте
• Працювати з інфрою (Docker, CI/CD, Hetzner) — не як девопс, а щоб розуміти, куди катиться твій код

Що для нас важливо:

• 4+ років комерційного досвіду з Python
• Сильний Django + DRF (ORM, міграції, querysets, сигнали, middleware)
• Досвід з PostgreSQL (складні запити, індекси, оптимізація)
• Практика з Celery + Redis — не просто "бачив", а реально робив задачі з чергами
• Досвід побудови інтеграцій через REST API (OAuth, вебхуки, rate limits, idempotency)
• Базові DevOps-навички: Docker, docker-compose, CI/CD (GitHub Actions), робота з VPS (Hetzner/AWS)
• Вміння аргументувати технічні рішення і відстоювати їх

Буде великим плюсом:

• Досвід з українськими інтеграціями: Prom.ua, Rozetka, Нова Пошта, Monobank, Checkbox ПРРО, Horoshop
• Досвід з SaaS-продуктами або CRM/ERP
• Робота з моніторингом і алертингом (Sentry, Prometheus)
• Досвід з WebSocket / real-time оновленнями

Наш стек: Django, DRF, Celery, PostgreSQL, Redis, Docker, Caddy, Cloudflare R2, Hetzner, Sentry

Чому тобі може бути цікаво:

• Продукт, а не аутсорс — ти бачиш, як твій код впливає на реальних клієнтів
• Вплив на архітектуру — не спадщина "так історично склалось", а простір щоб зробити правильно
• Швидкі рішення, без бюрократії — ти говориш напряму з CEO і product-командою
• Ринок України — продукт, який ти сам можеш використовувати і розуміти
• Віддалено, повна зайнятість, гнучкий графік

Як відгукнутись: коротко (4-6 речень) опиши свій досвід з Django + Celery та одну найскладнішу інтеграцію, яку ти робив — що було найважчим і як вирішив.