Jobs Python

We work with startups and established companies to create products in healthcare, fintech, eCommerce, and AI. This role offers real variety — new domains, evolving challenges, and steady professional growth instead of being locked into a single legacy system.

If you’re motivated by fast learning and building features that go live, this might be the right place for you.
 

What You'll Do

• Design and implement scalable backend solutions and contribute to architecture decisions
• Own features end-to-end — from technical discussion to production deployment
• Work closely with the client’s team on project tasks in English
• Optimize performance and improve existing systems
• Take responsibility for production stability and code quality

What We Work With

⚡ Python, FastAPI, Django, Pydantic, PostgreSQL, uv, Ruff

Gets You Extra Points

• Confident communication skills for requirement clarification
• Familiar with SQLModel, Alembic
• Used AI coding tools (Cursor, Claude Code) in daily workflow
• Practical experience working with AI/LLM integrations in real projects
• Experience working on production-ready applications
• Experience with full-stack development using React

What You Bring

• 1+ years of commercial backend development experience
• Strong knowledge of Python
• Solid understanding of REST APIs
• Experience working with SQL databases
• Ability to work independently and take ownership
• English: Upper-Intermediate (B2+) or higher — confident spoken and written communication with clients

What You Get

Work & Growth:

• Fully remote, flexible hours
• Structured code reviews
• Senior engineers who help you level up
• English practice sessions

Compensation:

• Salary in USD
• Performance reviews twice a year
• 15 days paid vacation + sick leave

About Us

We’re building a mental wellness app designed to deliver personalised, accessible, and impactful support to users worldwide. Our mobile app is already live and growing fast, and we’re now looking for a talented Backend Developer to join our team and help take the product to the next level.

The Role

You'll own and evolve the server-side logic that powers our apps — designing and shipping APIs consumed by mobile and web clients, strengthening our microservices ecosystem, and helping us scale reliably and securely. You'll work closely with frontend and mobile engineers, DevOps, and product.

Key Responsibilities
 API & Auth
 

• Design and maintain RESTful APIs for iOS, Android, and web
• Build high-throughput async endpoints
• Implement JWT auth flows and OAuth 2.0 social login (Apple, Google)

Microservices & Architecture
 

• Develop and maintain core services: User, Content, Tracking, Analytics, Notification
• Design stateless, fault-tolerant services for horizontal scaling
• Contribute to Golang services for high-concurrency analytics and notification dispatch

Database & Caching
 

• Write optimized PostgreSQL queries; design schema migrations indexes
• Implement time-based table partitioning for analytics and journal data
• Configure PgBouncer pooling, read/write splitting, and materialized views
• Build and invalidate multi-layer Redis caches (sessions, content metadata, preferences)

Integrations
 

• Apple HealthKit (sleep, HRV, mindful minutes, activity sync)
• In-app purchases: App Store API and Google Play Billing verification
• Push notifications via Firebase Cloud Messaging (iOS & Android)
• Stripe for web subscription payments; Amazon Polly for TTS in meditations

Security & GDPR
 

• GDPR features: data export (JSON), 30-day automated deletion, consent management
• AES-256-GCM encryption for sensitive mental health data fields
• Enforce TLS 1.3, HSTS, Perfect Forward Secrecy; contribute to RBAC and audit logging

DevOps & Quality
 • Maintain Dockerfiles and multi-stage build configs; participate in GitLab CI/CD pipeline
 • Support blue-green deployments and canary rollouts (10% traffic routing)
 • Write unit, integration, and contract tests using pytest

Requirements
Must Have
 • 5+ years backend development in Python
 • Confident working with the Flask and FastAPI frameworks.
 • Experience with Golang, JavaScript, and HTML.
 • VPS management skills on AWS: initial setup, application deployment, performance optimization, updates, security, and monitoring.
 • Experience working with Elasticsearch.
 • Strong PostgreSQL skills: schema design, query optimization, indexing, migrations
 • Redis for caching, session management, and rate limiting
 • JWT authentication, OAuth 2.0, and security best practices
 • Experience with pytest and contributing to CI/CD pipelines
 • Comfortable working in a Docker-based microservices environment
 • Knowledge of GDPR requirements and privacy-by-design practices
 • Proficiency with Git and collaborative workflows (GitFlow)

About Us

We’re building a mental wellness app designed to deliver personalised, accessible, and impactful support to users worldwide. Our mobile app is already live and growing fast, and we’re now looking for a talented Backend Developer to join our team and help take the product to the next level.

The Role

You'll own and evolve the server-side logic that powers our apps — designing and shipping APIs consumed by mobile and web clients, strengthening our microservices ecosystem, and helping us scale reliably and securely. You'll work closely with frontend and mobile engineers, DevOps, and product.

Key Responsibilities
 API & Auth
 

• Design and maintain RESTful APIs for iOS, Android, and web
• Build high-throughput async endpoints
• Implement JWT auth flows and OAuth 2.0 social login (Apple, Google)

Microservices & Architecture
 

• Develop and maintain core services: User, Content, Tracking, Analytics, Notification
• Design stateless, fault-tolerant services for horizontal scaling
• Contribute to Golang services for high-concurrency analytics and notification dispatch

Database & Caching
 

• Write optimized PostgreSQL queries; design schema migrations indexes
• Implement time-based table partitioning for analytics and journal data
• Configure PgBouncer pooling, read/write splitting, and materialized views
• Build and invalidate multi-layer Redis caches (sessions, content metadata, preferences)

Integrations
 

• Apple HealthKit (sleep, HRV, mindful minutes, activity sync)
• In-app purchases: App Store API and Google Play Billing verification
• Push notifications via Firebase Cloud Messaging (iOS & Android)
• Stripe for web subscription payments; Amazon Polly for TTS in meditations

Security & GDPR
 

• GDPR features: data export (JSON), 30-day automated deletion, consent management
• AES-256-GCM encryption for sensitive mental health data fields
• Enforce TLS 1.3, HSTS, Perfect Forward Secrecy; contribute to RBAC and audit logging

DevOps & Quality
 • Maintain Dockerfiles and multi-stage build configs; participate in GitLab CI/CD pipeline
 • Support blue-green deployments and canary rollouts (10% traffic routing)
 • Write unit, integration, and contract tests using pytest

Requirements
Must Have
 • 5+ years backend development in Python
 • Confident working with the Flask and FastAPI frameworks.
 • Experience with Golang, JavaScript, and HTML.
 • VPS management skills on AWS: initial setup, application deployment, performance optimization, updates, security, and monitoring.
 • Experience working with Elasticsearch.
 • Strong PostgreSQL skills: schema design, query optimization, indexing, migrations
 • Redis for caching, session management, and rate limiting
 • JWT authentication, OAuth 2.0, and security best practices
 • Experience with pytest and contributing to CI/CD pipelines
 • Comfortable working in a Docker-based microservices environment
 • Knowledge of GDPR requirements and privacy-by-design practices
 • Proficiency with Git and collaborative workflows (GitFlow)

About Us

We’re building a mental wellness app designed to deliver personalised, accessible, and impactful support to users worldwide. Our mobile app is already live and growing fast, and we’re now looking for a talented Backend Developer to join our team and help take the product to the next level.

The Role

You'll own and evolve the server-side logic that powers our apps — designing and shipping APIs consumed by mobile and web clients, strengthening our microservices ecosystem, and helping us scale reliably and securely. You'll work closely with frontend and mobile engineers, DevOps, and product.

Key Responsibilities
 API & Auth
 

• Design and maintain RESTful APIs for iOS, Android, and web
• Build high-throughput async endpoints
• Implement JWT auth flows and OAuth 2.0 social login (Apple, Google)

Microservices & Architecture
 

• Develop and maintain core services: User, Content, Tracking, Analytics, Notification
• Design stateless, fault-tolerant services for horizontal scaling
• Contribute to Golang services for high-concurrency analytics and notification dispatch

Database & Caching
 

• Write optimized PostgreSQL queries; design schema migrations indexes
• Implement time-based table partitioning for analytics and journal data
• Configure PgBouncer pooling, read/write splitting, and materialized views
• Build and invalidate multi-layer Redis caches (sessions, content metadata, preferences)

Integrations
 

• Apple HealthKit (sleep, HRV, mindful minutes, activity sync)
• In-app purchases: App Store API and Google Play Billing verification
• Push notifications via Firebase Cloud Messaging (iOS & Android)
• Stripe for web subscription payments; Amazon Polly for TTS in meditations

Security & GDPR
 

• GDPR features: data export (JSON), 30-day automated deletion, consent management
• AES-256-GCM encryption for sensitive mental health data fields
• Enforce TLS 1.3, HSTS, Perfect Forward Secrecy; contribute to RBAC and audit logging

DevOps & Quality
 • Maintain Dockerfiles and multi-stage build configs; participate in GitLab CI/CD pipeline
 • Support blue-green deployments and canary rollouts (10% traffic routing)
 • Write unit, integration, and contract tests using pytest

Requirements
Must Have
 • 5+ years backend development in Python
 • Confident working with the Flask and FastAPI frameworks.
 • Experience with Golang, JavaScript, and HTML.
 • VPS management skills on AWS: initial setup, application deployment, performance optimization, updates, security, and monitoring.
 • Experience working with Elasticsearch.
 • Strong PostgreSQL skills: schema design, query optimization, indexing, migrations
 • Redis for caching, session management, and rate limiting
 • JWT authentication, OAuth 2.0, and security best practices
 • Experience with pytest and contributing to CI/CD pipelines
 • Comfortable working in a Docker-based microservices environment
 • Knowledge of GDPR requirements and privacy-by-design practices
 • Proficiency with Git and collaborative workflows (GitFlow)

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.

Engineers work on high-throughput processing, low-latency APIs, distributed microservices, and enterprise-grade security in a highly complex environment.

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.

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:

• 6+ 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.

Position Overview:

Your expertise as a Senior Python Backend Developer and your understanding of web security principles will be invaluable to our team. You will be handling a complex, high-traffic platform with thousands of registered users, including video streaming, image processing, and an internal CRM.

Required Skills and Experience:

• Expertise in Python (5+ years) and Django framework, ORM, migrations, admin interface, creating REST API with Django Rest Framework;
• Experience with setting up or maintaining AWS (S3, RDS, SNS, SQS, CloudFront, CloudFormation) and implementation of OAuth flows;
• Proficiency with Celery (4.x/5.x) and message brokers (Redis or RabbitMQ);
• Experience using Docker (Dockerfile, docker-compose) and basic CI/CD knowledge (GitHub Actions or similar);
• Good knowledge of SQL and relational databases (preferably PostgreSQL);
• Proficiency in Git (Pull/Merge Requests, Code Reviews, Git Flow);
• English language — Full professional proficiency in English

This is a Senior position only. Only apply if you have at least 5 years of experience in these areas:

• Language: Python (primary), basic JavaScript (Vue.js — nice to have)
• Database: PostgreSQL
• Framework: Django, Django REST Framework
• Models: Django ORM models (relational)
• Architect Patterns: RESTful API
• Broker Message: Redis or RabbitMQ
• Cache: Redis
• Monitoring Tools: Sentry (Pytest, Flake8, Bandit, wemake-python-styleguide - nice to have)

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

Job Description

• Strong commercial experience with Python and SQL in building scalable data or backend systems
• Solid experience with Google Cloud Platform
• Experience with data platforms (e.g., BigQuery, Dataflow, Pub/Sub)
• Experience designing and implementing data-intensive and distributed systems
• Experience with LLMs / Generative AI or modern AI frameworks
• Proven experience in a technical leadership role (Tech Lead / Architect), including system design, decision-making, and mentoring engineers
• Strong understanding of software architecture principles, best practices, and design patterns
• Experience with APIs, microservices, and modern backend development practices
• Familiarity with CI/CD pipelines, testing strategies, and production-grade deployments
• Ability to work closely with stakeholders and translate business requirements into technical solutions
• Strong communication skills and ability to lead discussions with both technical and non-technical audiences
• Ability to take ownership of technical direction and drive architectural decisions across teams

Highly desirable qualifications:

• Hands-on experience with MLOps practices and tools
• Familiarity with orchestration tools such as Airflow
• Experience working in enterprise environments with complex data ecosystems
• Exposure to frontend or full-stack development is a plus

Job Responsibilities

• Lead the technical design and architecture of Python-based systems, ensuring scalability, reliability, and maintainability
• Define and drive engineering best practices across the team, including code quality, testing, CI/CD, and deployment standards
• Provide technical leadership and mentorship to engineers, guiding implementation approaches, reviewing code, and supporting professional growth
• Own and contribute to the end-to-end delivery of data and backend solutions, from design through development, deployment, and ongoing optimisation
• Design and oversee data pipelines, integrations, and APIs, ensuring efficient and secure data flow across systems
• Ensure solutions are aligned with cloud-native principles, leveraging GCP services where appropriate
• Act as a key decision-maker on technology choices, architecture patterns, and trade-offs
• Drive long-term technical vision and roadmap, ensuring alignment with business goals and platform evolution

Hands-on responsibilities:

• Contribute to core system components and critical features when needed
• Implement and review robust, production-ready code
• Support integration and operationalisation of AI/ML components, ensuring they are scalable and maintainable in production environments
• Troubleshoot complex technical issues and provide guidance on resolution
• Collaborate closely with product, data, and business stakeholders to translate requirements into scalable technical solutions
• Proactively identify technical risks, bottlenecks, and improvement opportunities, and drive initiatives to address them
• Ensure system observability, performance monitoring, and reliability standards are met
• Stay up to date with industry trends, emerging technologies, and AI/ML advancements, and evaluate their applicability to the project
• Promote knowledge sharing and continuous improvement within the team and wider engineering community

Department/Project Description

We have an exciting opportunity for an experienced and passionate technical lead / architect to join our growing technology team within the WPP division, focusing on building technology products for world's leading media agencies. The successful candidate will work alongside developers and other members of the scrum teams. Our team consists of 100+ engineers, designers, data, and product people, working in small inter-disciplinary teams closely with creative agencies, media agencies, and with our customers.

WPP and all its affiliates embrace and celebrate diversity, inclusivity, and equal opportunity. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills. We are a worldwide media agency network that represents global clients. The more inclusive we are, the more great work we can create together.

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