Jobs Python

At Uvik Software, we specialize in assembling top-tier dedicated development teams and delivering exceptional software solutions to clients across the globe. We are passionate about clean code, great collaboration, and cutting-edge technology👩‍💻🧑‍💻🦾.


We’re on the lookout for a Python Engineer who is eager to grow, build scalable backend systems, and contribute to exciting projects in a fast-paced, agile environment. If you're a motivated developer with a sharp eye for detail and a passion for problem-solving, this is your opportunity to make a real impact.

📍Location: USA Only
📌Job Type: Contractor, Full-time


💼 Responsibilities:

- Design, develop, and maintain backend services and RESTful APIs using Python (Flask or FastAPI)
- Write clean, maintainable, and scalable code following best practices (PEP8)
- Work with SQL databases (PostgreSQL preferred) to design, query, and manage data
- Develop unit and integration tests with tools like Pytest
- Document APIs using tools such as Swagger or Insomnia
- Collaborate with the team via Git (GitHub/GitLab/Bitbucket) and participate in code reviews
- Support CI/CD pipeline setup (e.g., Jenkins, GitLab CI)
- Debug and troubleshoot backend systems
- Integrate and utilize Large Language Models (LLMs) for enhanced application capabilities
- Communicate clearly and effectively in English (both written and spoken)


✅ Requirements:

- 2–3 years of hands-on experience in Python development
- Strong knowledge of Python fundamentals
- Practical experience with Flask or FastAPI
- Experience working with SQL databases
- Experience or interest in integrating LLMs into backend systems
- Familiarity with Docker
- Basic understanding of Git or other version control systems
- Exposure to unit testing, API testing, and tools like PyLint or Flake8
- Ability to work in Linux and/or Windows environments
- C1 or higher level of English
- A growth mindset and proactive attitude



Nice to Have

Experience with CI/CD pipelines (e.g., Jenkins, GitLab)
Familiarity with tools like Jira or Crucible
Exposure to cloud platforms or Kubernetes


🍀What We Offer:

- Top Equipment: MacBook Pro + Dell Monitor
- Flexible Schedule: Balance your life with adaptable working hours
- Meaningful Projects: Work with real-world technologies that make a difference
- Professional Growth: Long-term opportunities and support for your development
- Competitive Compensation: Based on your skills and contribution

Ready to level up your Python skills and work with a supportive, forward-thinking team?
Apply now and let's build something great together!

CapsLock is a dynamic, global IT marketing company that pioneers unique, scalable customer acquisition solutions for B2C clients. We combine deep expertise in IT, design, and data analytics, enabling us to tackle the most complex sales challenges across a wide range of industries—primarily for large North American partners. By seamlessly integrating digital marketing services, AI-based predictive analytics, proprietary MarTech products, and sales consulting, we deliver powerful, data-informed customer acquisition solutions.

This role offers a unique opportunity to work at the forefront of generative AI integration and product development. Reporting directly to our IT Director, you will be the primary catalyst driving our company's AI transformation, identifying cutting-edge opportunities, and architecting autonomous AI agents. You'll be in charge in shaping AI-powered solutions while collaborating with a skilled technical team (Development, DevOps, Design and QA). If you're passionate about applying generative AI technologies and creating innovative products, this position provides an exciting platform for your expertise and creativity.

Responsibilities

• Develop AI Agents
• Architect, build, and deploy autonomous and semi-autonomous AI agents to streamline complex workflows.
• Integrate generative AI Providers.
• Combine different AI solutions and providers to create comprehensive and efficient AI systems.
• Design and implement architecture.
• Design and contribute to the architecture of AI systems, ensuring scalability, reliability, and performance.
• Designing data structures and data management.
• Collect, preprocess, and analyze data to ensure high-quality inputs for AI models.
• Write surrounding code.
• Develop the necessary code to support AI models, ensuring seamless integration with existing systems and infrastructure.
• Monitor, maintain and optimize solutions.
• Continuously monitor the performance of AI products and systems, making necessary adjustments to improve accuracy and efficiency.
• Directly collaborate with multiple departments in our company.
• Work closely with engineers, product managers, and other stakeholders to identify business problems and develop AI-driven solutions.
• Create technical documentation.
• Produce comprehensive technical documentation for AI systems, including system architecture, model specifications, data flows, and testing procedures.
• Develop Quality Assurance procedures.
• Create and implement QA processes specifically tailored for AI systems, including data validation, model testing, and performance evaluation.
• Stay updated.
• Keep abreast of the latest AI technologies, trends, and best practices to ensure the company remains at the forefront of AI innovation.
• Security Awareness.
• Understanding of security best practices in AI system development and deployment.

Skills & Background:

• Bachelor’s or Master’s degree in Computer Science, Artificial Intelligence, Data Science, or a related field.
• Existing experience in developing and implementing solutions based on generative AI models.
• Proven track record of developing functional AI agents and identifying transformation opportunities.
• Proficiency in any programming language. Experience with modern AI stacks (e.g., Python, TypeScript) is highly preferred.
• Familiarity with existing AI providers (OpenAI, Google, Anthropic, xAI, etc.).
• Understanding of modern Image generation models (e.g., Stable Diffusion, DALL-E 3, Adobe Firefly) and Video generation models (e.g., Runway Gen-3, Pika Labs, OpenAI Sora, Google Veo).
• Hands-on experience with Agentic frameworks (e.g., LangChain, AutoGen) and RAG.
• Excellent analytical and problem-solving skills.
• Strong communication and collaboration skills to work effectively with cross-functional teams.
• Fluent in English language.

Nice to Have:

• Experience with project management Agile methodologies such as Kanban or Scrum.
• Knowledge of AI ethics and techniques to mitigate bias in AI models.
• Master's or Ph.D. in Computer Science.
• Familiarity with cloud-native architectures and container orchestration (e.g., Kubernetes, Docker).

Our client US based IT product company is looking for Middle AI/Backend Developer.

Must have:

• Python 3+ yrs - FastAPI, async, Pydantic, SQLAlchemy + Alembic, RQ/APScheduler
• LLM stack - LangChain, LangGraph, LiteLLM, OpenAI API, RAG (chunking, retrieval, reranking)
• ML - PyTorch, Hugging Face Transformers, scikit-learn, NumPy/Pandas
• MongoDB + MQL - aggregation pipelines ($match, $group, $lookup), complex queries - mandatory
• Databases - Redis, PostgreSQL, Qdrant (vector search)
• Cloud/LLM providers - AWS Bedrock, Ollama, OpenAI/Anthropic API
• Docker + Docker Compose (multi-service stacks, GPU images)
• Security - JWT, TLS, HMAC, PII anonymization/pseudonymization
• Protocols - REST, WebSocket, A2A (agent-to-agent), MCP
• Request classifier / intent routing for LLM agents
• Whisper (ASR, speech-to-text integration)

Nice to have: Go, Jenkins, LangFuse, OpenTelemetry, Prometheus/Grafana, RAGAS, Ollama, TensorBoard

Soft skills: self-sufficient, accountable, resilient under pressure, able to own a sub-project end to end.

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

We are looking for a Senior Software Engineer for our client, a US-based wellness-tech startup building an AI-powered platform for salons and wellness centers.

The product combines machine learning, recommendation systems, diagnostics, eCommerce, and operational tooling into a single ecosystem used by real businesses and customers.

The platform analyzes customer data and questionnaire inputs to generate personalized treatment and product recommendations through a custom AI service built with Python, ML models, and Elasticsearch. The engineering team is continuously improving recommendation accuracy, integrating new AI capabilities, and scaling the infrastructure as the product grows.

This is an opportunity to join a small, product-focused team where engineering has direct impact on the business and where developers are expected to contribute across the entire platform, from AI integrations and backend architecture to cloud infrastructure and customer-facing features.

Responsibilities

* Maintain and improve a Python-based AI recommendation service

* Integrate and improve ML/AI models in production environments

* Improve Elasticsearch-based recommendation and search logic

* Continuously improve recommendation accuracy based on business requirements and user data

* Develop backend services using Node.js / TypeScript

* Build frontend functionality using React

* Manage AWS infrastructure and deployment workflows

* Improve CI/CD and overall platform reliability

* Work on integrations with external systems including Shopify

* Participate in architecture decisions and long-term technical planning

Tech Stack

Python, TensorFlow (or similar ML frameworks), Elasticsearch / OpenSearch, TypeScript, Node.js / NestJS, React, AWS, PostgreSQL, Redis, Docker, GitHub Actions / CI/CD.

Requirements

* Strong commercial experience with Python

* Experience working with TensorFlow or similar machine learning frameworks

* Experience integrating AI/ML models into production systems

* Strong experience with Elasticsearch, OpenSearch, or Solr

* Strong experience with TypeScript and Node.js

* Experience building frontend applications with React

* Strong AWS experience

* Experience with Docker, Linux, and CI/CD workflows

* Strong understanding of APIs and backend architecture

* Experience working in startup or product-focused environments

* Advanced English communication skills

Nice to Have

* Experience with recommendation engines or AI-powered personalization systems

* Shopify integration experience

* Experience with Terraform, CloudFormation, or AWS CDK

* Native Android development experience (Kotlin preferred)

* Experience using AI coding assistants such as GitHub Copilot, Cursor, Claude Code, etc.

What They’re Looking For

The company is looking for a long-term engineering hire who can take ownership of the product and help lead the technical development of the platform as the company scales.

The immediate priorities are heavily focused on the AI recommendation service, ML integrations, and Elasticsearch-based recommendation infrastructure. Over time, the engineer will also contribute across backend development, infrastructure, integrations, and overall platform evolution.

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

Applefy - Premium Mobile and Web Development company, is looking for a talented Python Developer to join our dynamic team on an ongoing project.

This is a fantastic opportunity for a developer passionate about building high-quality software solutions and wanting to grow their skills in a flexible and supportive environment.

What We Offer:
• Flexible work schedule: Manage your own time and work at your own pace.
• Fully remote: Work from anywhere in the world.
• Comprehensive leave policy: Enjoy all official holidays, 20 days of paid vacation, and 10 sick days without needing a doctor's note.

Key Requirements:
• Strong communication skills
• Proficiency in spoken English
• 3+ years of experience with Python
• Experience with crypto / Payment providers
• At least 1 year of experience in product development
• Solid understanding of UI/UX principles
• Keen attention to detail
• A desire to learn and grow professionally

Preferred Qualifications:
• MacBook (ARM processor) & iPhone owner
• Residency in Ukraine 🇺🇦

If you're ready to take the next step in your career with Applefy, we'd love to hear from you!

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

About the company

codeIMPL was launched in 2018 with a large knowledge and experience in mobile development.
Since that we help businesses and individuals establish their presence on any modern device and
platform — mobile, web, etc.

Our clients are large worldwide companies, that develop important and significant solutions in
FinTech, Blockchain, DeFi, Health & Fitness, Gambling domains.
In codeIMPL we use modern, innovative technologies and approaches that allow us to support any
solution and provide the foundation for its future scaling and enhancement.

About the product
Project: fintech, payment system.

Responsibilities
● Develop and maintain asynchronous backend services (FastAPI, ARQ, service-oriented and
microservice applications).
● Write clean, testable, and maintainable code.
● Participate in design discussions and suggest improvements to performance and developer
experience.
● Collaborate openly with backend, frontend, DevOps, and product teams.

Requirements
● 3+ years of hands-on experience with Python (asyncio, typing, pydantic);
● Solid experience with SQLAlchemy 2.0 and Alembic;
● Proficiency in writing unit and integration tests (Pytest/Unittest);
● Hands-on experience with FastAPI and async task processing (ARQ/Celery/RQ);
● Database skills: PostgreSQL (indexes, transactions, RLS). Knowledge of
TimescaleDB/ClickHouse is a plus;
● Experience in database query optimisation (EXPLAIN, keyset pagination, batching);
● Understanding of idempotency and outbox/event sourcing principles;
● Experience with Docker, docker-compose, local environments;
● Basic knowledge of Kubernetes and AWS (SQS, RDS, S3) is a plus;
● Hands-on experience with creating and supporting PCI DSS compliant applications is a plus;
● Experience in creating skills, commands and agents for Claude AI is a plus;

● Understanding of observability (structured logs, traces, metrics).

We offer:
● Full-time remote job;
● Paid annual leave;
● Work with professional team and friendly atmosphere;
● Minimum of bureaucracy.

About Us

At True Path Leads , we're building the next generation of performance marketing infrastructure. Our proprietary lead management platform operates at scale, processing millions of pings and leads in real time. We are expanding rapidly and looking for a highly capable Senior Backend Engineer to help design, build, and scale our core lead processing engine and supporting services.

Tech Stack

Python 3 (FastAPI) · SQL (MySQL, ClickHouse) · Kafka · AWS (EKS)

What You'll Do

• Design, build, and scale a high-load, mission-critical lead processing system in Python.
• Own architecture and implementation of backend services and APIs following Clean Architecture and SOLID principles.
• Develop real-time data pipelines using Kafka and high-performance databases (PerconaDB, ClickHouse).
• Optimize system performance, latency, and throughput under heavy load.
• Collaborate with product, engineering, and leadership to define and deliver features.
• Deploy, operate, and monitor services in AWS (EKS) using modern DevOps practices.
• Contribute to system reliability, observability, and fault tolerance.

What We're Looking For

• 10+ years of backend development experience (Python preferred).
• Proven experience building and scaling high-load / distributed systems.
• Strong SQL expertise (MySQL, ClickHouse) — query optimization, indexing, data modeling.
• Solid understanding of Kafka and event-driven architectures.
• Experience designing and maintaining REST APIs and asynchronous systems.
• Deep understanding of concurrency, networking, and performance bottlenecks.
• Hands-on experience with AWS (EKS, S3, Lambda, networking, etc.).
• Experience with observability: metrics, logging, tracing (Prometheus, VictoriaMetrics, etc.).
• Ability to take ownership and drive technical decisions.

Nice to Have

• Experience in performance marketing, lead generation, or affiliate platforms.
• Experience with real-time bidding systems or ad-tech.
• Familiarity with Kubernetes internals and production-grade deployments.

What You'll Get

• Fully remote position with flexible working hours.
• High ownership and direct impact on architecture and product direction.
• Work on systems operating at significant scale.
• Fast-paced startup environment with experienced leadership.
• Competitive compensation based on experience and skill set.
• Clear growth path toward Team Lead or Software Architect roles.

CodeSmart is seeking an experienced and proactive Senior Python Developer to join our growing engineering team. The ideal candidate has a deep understanding of Python, extensive experience building scalable web applications with Django, and a strong background in distributed systems using Celery and RabbitMQ. You will also be responsible for designing and integrating features powered by OpenAI and other LLM APIs, helping us build intelligent, AI-driven products.

As a Senior Python Developer, you will own core parts of the backend architecture, mentor other engineers, and work closely with product and cross-functional teams to deliver robust, high-quality solutions.
 

Responsibilities:

• Design, develop, and maintain backend services using Django framework and Fast API.
• Architect and optimize asynchronous task processing using Celery and RabbitMQ.
• Design and implement features that leverage OpenAI and other LLM APIs (e.g., content generation, assistants, search, classification, and summarization).
• Take ownership of technical solutions from design through deployment, monitoring, and iteration.
• Collaborate with product managers, designers, and other developers to define and implement new features.
• Write efficient, reusable, testable, and well-documented code.
• Participate in and lead code reviews, ensuring code quality, performance, and adherence to best practices.
• Design and optimize Postgres database schemas, queries, and migrations.
• Use Docker to containerize applications and support deployment workflows.
• Diagnose, troubleshoot, and resolve complex production issues.
• Mentor Middle and Junior developers, providing technical guidance and knowledge sharing.
• Stay current with industry trends, especially in LLMs, AI/ML tooling, and backend technologies, and bring relevant ideas into the team.
   

Requirements:

• Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience).
• 6+ years of commercial experience in Python backend development.
• Strong hands-on experience with the Django framework.
• Proven production experience integrating and working with OpenAI and other LLM APIs (e.g., prompt design, handling context windows, managing costs and rate limits).
• Experience building AI-powered features or workflows on top of LLMs (chatbots, assistants, content generation, semantic search, etc.).
• Strong knowledge of Object-Oriented Programming, design patterns, and application architecture.
• Proficiency with Postgres SQL: schema design, indexing, query optimization.
• Practical experience with Docker for development and deployment.
• Strong debugging, performance optimization, and problem-solving skills.
• Experience with Git.
• Experience working in Agile environments Scrum/Kanban.
• Familiarity with cloud platforms (AWS, GCP, or Azure) and CI/CD.
• Excellent communication skills and the ability to collaborate effectively in a distributed team.
• Experience building AI-powered features: content generation, interactive workflows, structured output parsing, prompt design
• Solid production experience with Celery + RabbitMQ (retries, task states, error handling, restart resilience)
• Strong knowledge of Docker & Docker Compose for development and deployment of multi-container applications

If you have real-world prompt examples from production projects (chatbots, interactive story generators, agents, RAG pipelines with multi-step reasoning), please highlight them in your cover letter or include GitHub links. This will significantly speed up the review process.
 

If you’re passionate about building scalable backend systems and excited to work at the intersection of Python and LLM-powered applications, we’d love to hear from you.

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!)

N-iX is looking for Senior/Middle Python Engineer with Rust to join the fast-growing team one our projects. 

Our client is a leading European company delivering high-performance platforms for meteorological and geospatial data. Our products handle complex datasets with distributed, scalable systems while ensuring reliability, reproducibility, and adherence to industry standards. 

As a Software Developer for the D2E Platform team, you will focus on building high-performance backend systems and orchestrating distributed data workflows. You will work with meteorological formats (GRIB, NETCDF, GEOTIFF, Zarr), geospatial transformations, and scalable infrastructure, contributing directly to the foundation of our data ecosystem.

Responsibilities:

• Develop high-performance async backend code in Rust (Tokio), managing concurrency and binary data structures.
• Optimize distributed Python workflows with Dask and orchestrate pipelines using Prefect.
• Build and maintain RESTful APIs for high-concurrency, non-blocking access to meteorological and geospatial data.
• Standardize Zarr outputs, ensuring metadata, CRS, and affine transforms are correct for downstream systems.
• Integrate multiple data sources, including radar, nowcasting, ECMWF, and GCP grids.
• Deploy and manage distributed systems on Kubernetes (K8s) and ECS, optimizing container performance and resource allocation.
• Design and extend the Dask “formula” framework for various use cases, collaborating on front-end management interfaces (Node.js).
• Implement event-driven API updates using Prefect + NATS for new data arrivals.
• Ensure high code quality through testing, code reviews, and observability practices.
• Experience with AWS.
• English level at least Upper-Intermediate. 

Requirements:

• Strong Rust expertise - at least 3 years of experience: async programming (Tokio), concurrency, binary data structures.
• Advanced Python experience with distributed processing (Dask, Xarray, Numpy).
• Proven experience building scalable, distributed systems and RESTful APIs.
• Familiarity with meteorological and geospatial data formats (GRIB, NETCDF, GEOTIFF, Zarr).
• Understanding of geospatial projections, CRS, and affine transformations.
• Strong mathematical and analytical thinking for array and matrix manipulations.
• Experience with containerized infrastructure (K8s, ECS) and CI/CD workflows.
• English level at least Upper-Intermediate. 
• Degree in Computer Science, Software Engineering, Mathematics, or related field.

Nice-to-have:

• Experience with Golang or Node.js backend development.
• Familiarity with Prefect workflow orchestration.
• Prior experience with meteorological or geospatial datasets at scale.
• Knowledge of container performance optimization, monitoring, and observability.

Technology Stack:

• Backend: Rust (Tokio), Golang, Node.js
• Python & Data: Python (Dask, Xarray, Numpy, Prefect)
• Infrastructure: Kubernetes (K8s), ECS, CI/CD pipelines
• APIs & Integration: REST APIs, event-driven architectures (Prefect + NATS)
• Data Formats: GRIB, NETCDF, GEOTIFF, Zarr

Frontend/Management Interfaces (collaboration): Node.js

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

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:
High-stakes production engineering role on a mature, scale-tested system. You will deliver complex features and resolve high-impact bugs in production environments. The role requires an AI-native mindset — daily use of Claude Code and similar tools is expected, not optional.

Tech Stack: Python · React · Claude Code · AI Coding Tools

Requirements (Must-have):
- 8+ years of software engineering experience in high-stakes production environments
- Upper-Intermediate English
- Expert-level Python
- Proficient in React (3+ years) 
- Proven track record delivering complex features and solving high-impact bugs in mature systems
- AI-native workflow — power user of Claude Code or similar AI coding tools

Hiring Process: Intro call → Technical discussion → Offer
Duration: Long-term