Jobs Python

About 3DLOOK
3DLOOK is a leader in AI-powered body measurement technology. Our proprietary computer vision platform transforms two smartphone photos into accurate 3D body measurements and body composition data used by global brands in apparel, healthcare, fitness, and wearables. We build scalable AI solutions that solve real-world problems for enterprise customers worldwide.

About the Role
We're looking for a Senior Backend Engineer to design, build, and scale the backend services powering our AI platform. You'll develop high-performance APIs and distributed systems, optimize cloud infrastructure, and collaborate with Product, AI, Mobile, and DevOps teams to deliver reliable, scalable solutions used by enterprise customers.

Responsibilities
- Design, develop, and maintain scalable and reliable backend systems, services, and
APIs.
- Translate business requirements into scalable, reliable, and maintainable solutions.
Improve the reliability, observability, and performance of existing systems.
- Troubleshoot production issues and perform fixes or enhancements.
Integrate third-party APIs and cloud services.
- Write clean, maintainable, and well-tested code.
- Participate in code reviews, release processes, and contribute to engineering best practices.
- Contribute to CI/CD pipelines and deployment processes.
- Work with containerized applications and Kubernetes-based deployments.
- Collaborate closely with cross-functional engineering teams.

Qualifications
Required
- 7+ years of commercial Python development experience.
- Strong knowledge of Python 3.x and the standard library.

- Excellent knowledge of Django and its ecosystem.
- Deep understanding of concurrent programming (multithreading, multiprocessing, asyncio).
- Experience with asynchronous frameworks (FastAPI, aiohttp)
- Strong understanding of OOP, SOLID, DRY, and KISS principles.
- Deep understanding of RDBMS(PostgreSQL) and NoSQL systems.
- Experience working with ORMs (Django ORM, SQLAlchemy).
- Experience designing and building distributed systems.
- Experience with AWS services, containerization, Git, and CI/CD pipelines.
- Experience with Celery, Redis, RabbitMQ, or similar messaging systems.
- Experience integrating third-party APIs.
- Experience writing automated tests using pytest and unittest.
- Experience working in Agile/Scrum environments and participating in code reviews, design discussions, and release cycles.
- Ability to write clean, structured, and maintainable code.
- Upper-Intermediate (B2+) English or higher with strong written and verbal communication skills.
- Experience using AI-assisted development tools to improve development productivity and code quality.
- Comfortable leveraging modern AI tools for code generation, debugging, documentation,
testing, and research while maintaining high engineering standards.
- Ability to effectively use AI-powered development tools to accelerate software delivery
and improve engineering efficiency.
 

Location
- Fully remote.
- Comfortable collaborating across European and US time zones.

About the project
 

US-founded media company operating email newsletters at scale – millions of subscribers across finance, health, and business verticals. Small engineering team, flat structure, direct ownership, fast iteration. No layers of approval, no large org to navigate.

You'll own the AI layer of the automation platform alongside a counterpart engineer who handles integration and infrastructure.
 

What you'll work on

• AI-driven content generation and management workflows at production scale
• Agent systems coordinating multi-step operational tasks: content, QA, validation, reporting
• RAG pipelines over internal knowledge bases and operational data
• Prompt architectures designed for reliability, cost control, and measurable output quality
• Evaluation and regression testing for LLM systems — "it looked fine when I tested it" isn't good enough
   

Real production systems, not demos. The work removes hours of manual operational work daily and needs to be reliable enough that people actually trust it.
 

Requirements

• 6+ years of development experience
• 4+ years of production Python
• 2+ years shipping production systems with LLMs and agents
• Solid understanding of what happens underneath the frameworks: tokenization, context windows, function calling, when RAG helps and when it doesn't
• Hands-on with agent orchestration: LangChain, LangGraph, MCP, or equivalent
• Clean, maintainable Python – frameworks support your thinking, not replace it
   

Tech stack

Python · FastAPI · PostgreSQL · LLM APIs (OpenAI, Anthropic) · LangChain / LangGraph / MCP · vector databases · Playwright · Docker · proxy infrastructure
 

Conditions

• B2B contract, full-time
• Warsaw office (onsite preferred, remote considered)
• Direct collaboration with technical PM and small senior team
• Fast-moving environment: ambiguity, shifting priorities, growing scope

We are looking for an experienced Senior Full-Stack AI Engineer to help build a next-generation AI platform that enables ambitious professionals to learn, collaborate, and make better decisions in their domains.

You'll work across the entire product stack from designing intuitive user experiences to building scalable backend services and integrating modern AI capabilities such as LLMs, vector search, and Retrieval-Augmented Generation (RAG).

We're looking for someone who enjoys solving complex technical challenges, takes ownership of their work, and communicates ideas clearly through both code and documentation.
 

Responsibilities

• Design, develop, and maintain end-to-end product features.
• Build scalable backend services and APIs using Python.
• Develop modern, responsive frontend applications with Vue.js and/or React.
• Integrate LLMs and AI services using APIs.
• Implement vector search and Retrieval-Augmented Generation (RAG) pipelines.
• Design and optimize PostgreSQL and NoSQL databases.
• Integrate third-party services such as email providers and external APIs.
• Create interactive data visualizations and dashboards.
• Deploy and maintain applications using Docker and AWS.
• Collaborate with the product team to transform ideas into production-ready features.
• Write clean, maintainable, and well-documented code.
   

Requirements

• 5+ years of experience in full-stack software development.
• Strong commercial experience with Python.
• Solid experience with Vue.js and/or React.
• Excellent knowledge of TypeScript and JavaScript.
• Experience integrating AI APIs (OpenAI, Anthropic, Gemini, or similar).
• Practical experience with vector databases and RAG architectures.
• Strong SQL skills and experience with PostgreSQL.
• Experience working with NoSQL databases.
• Good understanding of REST APIs and backend architecture patterns.
• Experience integrating third-party services (Mailgun, SendGrid, email providers, etc.).
• Experience with Docker and containerized applications.
• AWS deployment and infrastructure experience.
• Experience with data visualization libraries such as D3.js, Shadcn UI, or similar.
• Strong problem-solving and communication skills.
• Ability to document technical decisions clearly.

About us
We are a product R&D company that creates solutions for the dynamic iGaming Ecosystem.
Our mission is to build cutting-edge platforms that reinvent the iGaming industry.
 

About the team

We are a focused engineering team of 5 to 9 people at a multi-product tech SaaS company. We work across personalization, recommendation, fraud detection, and some GenAI, through real-time, near-real-time, and batch
pipelines. The team is a blend of Python backend engineers, ML engineers, QA (manual and automation), a data engineer, and data scientists. Our shared mandate is to take experimentation from our data scientists and turn it into
robust, production-grade systems, either as standalone services or integrated into wider platforms.

The role

You will be a senior engineer on the team, building and operating backend systems and setting a high bar through your work. You will contribute significantly to architecture and technical direction and strongly influence how we build, working alongside other senior engineers and a hands-on engineering manager, while staying hands-on across the hardest problems. The systems you work on are either part of a larger SaaS backend or run as standalone services: batch and event-driven pipelines, stream consumers, feature stores, REST APIs, and background workers.
 

 Responsibilities

• Contribute significantly to the architecture and implementation approach for the team's backend systems, and influence technical direction
• Design and build production Python services: APIs, stream consumers, pipelines, feature stores, background workers
• Set and uphold engineering standards: code quality, testing, observability, deployment discipline
• Take ownership of deployment and release, partnering with DevOps on Docker, Kubernetes, and CI/CD
• Productionize data scientists' experimentation into reliable services
• Raise the technical bar through review, mentorship, and example
• Take part in the team's on-call rotation for the systems you build and operate
• Partner with product and business stakeholders to shape and scope work

 
Requirements

• 5+ years of backend engineering experience
• Strong Python: async, data processing, Redis, Kafka, and database clients, PySpark
• Strong relational database skills, plus Redis and Kafka (design and performance tuning)
• Good working knowledge of Docker, Kubernetes, and CI/CD, enough to partner well with DevOps
• Experience contributing to and influencing architecture and implementation approach for a team
• Deployment and release ownership
• Product mindset, comfortable speaking to customers and business stakeholders

Nice to have

• Databricks experience
• Experience building LLM-powered systems, including human-in-the-loop and agentic workflows
• Fraud detection, recsys, or personalization systems experience
• Prometheus and Grafana
• SaaS or high-scale product domain experience

Why join us

• Work on high-scale, high-throughput backend systems
• Broad range of technologies, stacks, and problems
• Take experimentation from data scientists and turn it into production systems
• A strong engineering culture that values technical depth and ownership
• A distributed team across Dubai and Europe

You will get:

• Work in a technically strong environment with modern stack and mature Agile culture;
• High autonomy, decision-making authority, and close cooperation with leadership;
• A position in a product development company with a dynamic environment and several concurrent projects;
• Opportunity to contribute (your ideas for improvement implementation);
• Continuous self-improvement and growth, including budget for certifications and courses;
• Competitive salary plus annual bonus, based on individual, team, and company performance;
• Company prepaid AI agent;
• Medical insurance coverage;
• English language courses;
• Wellbeing package: online-yoga classes, Yakaboo, BetterMe App: Health Coaching, BetterMe App: Mental Health;
• Corporate events and fun team-building activities;
• Remote-first culture (with a possibility to work from our Kyiv office)
   

Interview Stages:

1. HR Interview (30-45 minutes) — Initial conversation to discuss your experience, career goals, and cultural fit.
2. Technical Interview (1 hour) — In-depth technical interview covering relevant skills.
3. Technical Design Interview (LLD/HLD) (1 hour) — In-depth technical interview covering relevant skills.
4. Final Interview (1 hour) — A comprehensive discussion with the hiring manager, focusing on role-specific competencies and alignment with company values.
5. Reference Check & Job Offer

We are looking for a motivated and ambitious Strong Junior Python Developer who is eager to grow in the field of modern web technologies. You will become part of our team, contribute to interesting and challenging projects, and gain valuable experience under the guidance of senior colleagues.
 

What you’ll be doing:

• Developing new features and modules for our products.
• Participating in the design and maintenance of REST APIs.
• Writing clean, efficient, and testable code.
• Integrating with various external services and databases.
• Participating in code reviews and collaborating with the team.
• Troubleshooting, debugging, and optimizing existing code.

Requirements:

• 6+ months of commercial experience in Python development.
• Knowledge of either Django or FastAPI.
• Hands-on experience with PostgreSQL or MongoDB.
• Solid understanding of REST API design principles.
• Basic knowledge of cloud technologies (AWS or others) is a plus.
• English proficiency at an Upper-Intermediate (B2+) level.

We offer:

• Competitive salary.
• Opportunities for professional and career growth.
• Mentorship and support from experienced developers.
• Work on interesting projects with a modern technology stack.
• Flexible schedule and remote work options.
• Official employment and paid vacation/sick leave.
• Corporate events and a friendly team atmosphere.

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!

Python Test & Validation Engineer — Semiconductor / ASIC Environment
 

📍 Remote (candidates based in Europe)
🕐 Full-time
📅 Start: ASAP
📆 Duration: 6 months, extension likely
🗣 English: at least B2
 

About the role:
We're hiring on behalf of a client in the semiconductor / high-tech space who needs a hands-on engineer to strengthen their Post-Silicon Validation efforts. You'll be building and running Python-based test automation, tracking down complex issues across the hardware-software boundary, and working directly with lab equipment on real ASIC hardware — all in a remote setup, so strong independent debugging skills are essential.
 

What you'll bring:

• Solid track record building test frameworks and test cases in Python
• Hands-on Post-Silicon Validation experience with ASICs
• Practical test automation background (Pytest or comparable frameworks)
• Comfort debugging tricky issues that span both hardware and software layers
• Direct experience working with National Instruments PXI hardware
• A knack for turning open technical questions into concrete, measurable tests
• Track record integrating lab/measurement instruments into existing test setups
   

Bonus points:

• Background in hardware-adjacent software development
• Building data logging, analysis, or visualization tools in Python
• Experience evolving test architecture/infrastructure over time
• Broader exposure to measurement and validation environments
   

We offer:

• Possibility of payment by FOP, personal card, or Payoneer
• Work from home or the ability to work from a coworking space
• No bureaucracy
• Friendly atmosphere with quarterly teambuildings

Interview process:

There is 1 internal interview step: HR interview. After its successful passing, you’ll have a series of interviews with a customer, including a technical and a culture fit.
 

Ready to try your hand? Do not pull the cat’s tail, send your CV without a doubt!

Senior Backend Engineer (Python) needed to design and build the services that power a healthcare company enabling remote patient monitoring, clinical research, and personalized healthcare. You'll own Python services and REST APIs end to end — from discovery through to production — model and evolve the data behind them, and make foundational architectural decisions for a next-generation platform where scalability, security, and privacy are non-negotiable. You'll partner closely with frontend, mobile, clinical, and data teammates, set the technical bar for backend code and reliability, and mentor more junior engineers. This is a hands-on senior role for a backend engineer who leads non-trivial work independently and brings strong engineering judgement to a fast-paced, distributed environment.

What You'll Do:

• Drive foundational architectural decisions for our next-generation platform, ensuring scalability, security, and maintainability
• Design, build, and maintain Python services that expose well-documented, versioned REST APIs
• Model and evolve data with PostgreSQL (and NoSQL where appropriate), including schema migrations and query performance tuning
• Integrate with internal services and third-party systems (auth, payments, healthcare data sources) with clear contracts and graceful failure modes
• Design services with security and privacy by default, aligned with global healthcare compliance standards
• Write thorough automated tests at unit, integration, and contract levels using pytest
• Add the logging, metrics, and tracing needed to operate services confidently in production
• Participate in on-call and incident response for owned services, and drive blameless post-mortems and follow-ups
• Review code with care, pushing for clarity, simplicity, and good test coverage
• Use AI-assisted development tools effectively to accelerate delivery without compromising quality
• Document architecture decisions, runbooks, and API contracts so distributed teammates can pick work up easily
• Partner with product, design, and clinical stakeholders to scope features and trade-offs
• Mentor more junior backend engineers and help raise the bar on backend practices across teams

What We're Looking For:

• 3+ years of professional backend engineering experience shipping production services
• Bachelor's degree in Computer Science, Software Engineering, or a related technical field — or equivalent practical experience
• Strong, hands-on Python skills, including modern type hints, async patterns, and idiomatic project layout
• Production experience with at least one major Python web framework (FastAPI, Django, or Flask)
• A proven track record designing, building, and evolving REST APIs (OpenAPI / Swagger), with familiarity with API versioning, pagination, and error-handling conventions
• Solid SQL skills with PostgreSQL or MySQL — comfortable writing migrations and tuning queries
• Strong testing habits with pytest across unit, integration, and contract tests
• Confident with Git, code review, and trunk-based or short-lived-branch workflows
• Strong analytical and problem-solving skills, with attention to long-term maintainability
• An ownership mindset — you take features from idea to production and stay accountable after launch
• Clear written and verbal communication in English, with the ability to work asynchronously across time zones
• Pragmatism: you balance correctness, speed, and complexity appropriately for the stage of the product

Nice to Have:

• Experience working in regulated environments (HIPAA, GDPR, ISO 27001, SOC 2, or medical-device software)
• Working knowledge of event-driven architectures (Kafka, RabbitMQ, SQS, Pub/Sub)
• Experience with containerization and orchestration (Docker, Kubernetes)
• Familiarity with infrastructure as code (Terraform, Pulumi, CloudFormation)
• Exposure to observability tooling (OpenTelemetry, Datadog, Grafana, Sentry)
• Hands-on use of AI-assisted development tools to accelerate delivery
• Background in healthcare, life sciences, or another data-sensitive domain
• Experience with FHIR, HL7, or other healthcare interoperability standards
• Performance work on high-throughput or low-latency systems
• Hands-on experience deploying services to AWS, GCP, or Azure, and shipping changes through a CI/CD pipeline

What Success Looks Like:

• Demonstrated agency — you proactively identify technical gaps, architectural bottlenecks, or product opportunities and independently drive solutions to completion
• Reliable, well-tested services with healthy uptime and clear SLOs for the surfaces you own
• Predictable delivery: features shipped within agreed scope and timelines
• Strong code review and design contributions across the wider engineering team
• Growth and effectiveness of the more junior engineers you mentor
• Healthy incident response — time to detect, mitigate, and follow up on production issues

About Us:

Evowill is looking for a Junior Python AI Developer who is passionate about web development and eager to grow in a supportive and dynamic environment. We offer a clear path: starting with a hands-on internship and transitioning into a commercial project role — 100% of our juniors join real projects.

Requirements:

• Python, Django
• SQL (MySQL / PostgreSQL)
• REST API, OOP
• Linux (basic)
• Git, GitHub/GitLab
• English: Intermediate
• Pet projects on GitHub/GitLab
• Fast learner, organized, responsible

Would be a plus:

• Technical education (3rd year or higher)
• Practical experience gained through pet projects with Django, SOLID, Docker, CircleCI, JavaScript, React, HTML, CSS, non-relational databases, and testing.

Internship Stage (3 months):

• Full-time, practical learning
• Pet projects, technical interview preparations, and soft skills training
• English Speaking Club
• Senior Developers mentors from Ukraine and Colombia
• Technologies: JS, TS, React, Next.js, Python, Django, FastAPI, Docker, PostgreSQL, AWS, Qdrant, Ollama, LLMs and embedding models, etc.

Project Stage:

• Join commercial projects as a Full Stack Developer oriented to AI
• Salary from $1000 with regular reviews
• Ongoing mentorship and technical support
• Optional English-speaking club and extra tech learning

Phenomenon Studio is a boutique product design and development agency founded in 2019. We work with teams who’ve outgrown what they’ve built — from venture-backed startups to established market leaders — and own the work end to end: strategy, design, development, and post-launch.

The team of 70+ senior specialists is based in Europe, with entities in the USA, Estonia, and Switzerland, serving SaaS, fintech, healthcare, and EdTech. Across 120+ launches, clients have raised $500M+. Phenomenon is HIPAA-compliant, Nielsen Norman Group UX certified, and a Webflow Experts partner, holding a 5.0 rating on Clutch — and most clients come back for a second project.

Our customer is a GRC (Governance, Risk & Compliance Assessment) platform designed to automate risk assessment, vendor management, and compliance with security standards. It streamlines complex GRC processes by centralizing data, enabling efficient reporting, and reducing manual workload.

The product is used by universities and public sector organizations in the US.

Team: Solution Architect, 2x Backend, 2x Frontend, QA, PM, PO, UI/UX Designer

Requirements:

• 4+ years of commercial backend development experience
• Strong knowledge of Python 3.12+ and async programming (asyncio, async/await patterns)
• Strong hands-on experience with FastAPI (dependency injection, Pydantic, middleware)
• AI-assisted development as a daily practice - everyday, hands-on use of AI coding tools (Claude Code, Cursor, GitHub Copilot, or equivalent)
• Experience building AI agents and using Agent Skills
• Solid experience with SQLAlchemy 2.0 (async), PostgreSQL (asyncpg), and Alembic migrations
• Experience building real-time features with Socket.IO (or equivalent WebSocket frameworks) - rooms, namespaces, auth, scaling across workers
• Experience with Redis and distributed task queues (Celery, or arq/dramatiq)
• Understanding of multi-tenant architectures and data isolation patterns
• Experience with JWT-based auth and role/permission-based access control (RBAC/ABAC)
• Discipline around clean layering - clear separation between routes, services, and repositories (no SQL in the service layer)
• Hands-on experience with AWS (ECS Fargate, RDS, ElastiCache, S3, Secrets Manager, IAM), Docker (multi-stage builds), and Bash
• Experience designing and operating microservices (service boundaries, inter-service communication via internal SDKs, observability)
• Experience with Infrastructure as Code using Terraform (AWS provider, module composition)
• Strong experience writing unit and integration tests (pytest, pytest-asyncio)
• Mentoring and code review experience
• Strong communication skills and experience collaborating with stakeholders
• Upper-Intermediate English level
   

Nice to have:

• Experience with aioboto3 or other async AWS interaction patterns
• Experience scaling WebSocket/Socket.IO deployments (sticky sessions, Redis adapter, horizontal scaling)
• Experience with performance profiling and query optimization at scale
• Experience with CI/CD pipelines (GitHub Actions, GitLab CI)
• Familiarity with uv(Astral) or other modern Python package managers
• Understanding of cybersecurity principles
• Knowledge of security standards (ISO 27000, SOC 2)
• Experience with GRC (Governance, Risk, Compliance) domain

Responsibilities:

• Develop and maintain backend microservices using Python, FastAPI, and async SQLAlchemy
• Use AI tooling daily to accelerate delivery - while owning the correctness, security, and maintainability of everything that ships, regardless of how it was generated
• Design efficient database schemas, write performant queries, and manage schema evolution via Alembic
• Build and maintain real-time features via Socket.IO - event flows, room/namespace design, and reliable delivery under load
• Implement asynchronous workflows using Redis and Celery where appropriate
• Contribute to the microservices architecture - propose improvements for scalability, reliability, and clear service boundaries; consume and evolve internal SDKs for inter-service communication
• Work within a multi-tenant environment - build features that respect tenant isolation and scale across tenants
• Provision and evolve cloud infrastructure on AWS via Terraform (ECS Fargate, RDS, ElastiCache, ALB, IAM), following IaC best practices
• Collaborate with team members to align technical implementation with business goals
• Deploy and operate services using Docker and CI/CD pipelines
• Take initiative to identify improvements, propose technical solutions, and contribute ideas that enhance product quality, performance, and security posture

What we offer:

• Remote work format and flexible schedule
• Autonomy in work, opportunity to build processes, and grow within the company
• Individual development plan and annual performance review
• Workshops and playgrounds for continuous learning
• Compensation for subject-matter training
• Corporate English classes
• Access to IT Loyalty Club
• Accounting support
• 18 working days of annual leave
• 7 working days of sick leave and 7 working days of unpaid leave
• All national public holidays off
   

Recruitment process: Recruitment interview — Technical interview — Final interview

Mandatory Skills
- Minimum 3+ years of hands-on Python backend development experience in production environments
- Strong Python fundamentals (clean code practices, typing discipline (where used), debugging, and performance awareness)
- Experience building web APIs with a modern framework (FastAPI) and designing maintainable endpoints
- Strong understanding of API patterns (authentication/authorization basics, input validation, pagination, versioning, consistent error contracts)
- Solid database experience (PostgreSQL preferred - schema design, migrations, indexing, query optimization, transaction basics
- Experience with asynchronous/background processing and handling retries
- Experience writing tests (pytest or similar): unit + integration tests, mocking, test data strategy
- Familiarity with production-grade practices (logging, monitoring basics, configuration management, secure secrets handling)
- Ability to detect, analyze, and resolve issues in production systems
- Comfortable doing root-cause analysis
- Ability to work independently in a remote setup with proactive, clear communication.

Responsibilities:
- Build and ship backend features for Obriy AI / SURE platform - APIs, services, and workflow components that power automation, integrations, and knowledge modules
- Design, implement, and maintain clean, well-documented REST APIs (and internal service interfaces) with strong validation and error handling
- Integrate with external systems (CRMs, support tools, messaging channels) using stable adapters, retries, and safe failure handling
- Implement background processing and asynchronous workflows (queues, schedulers) for long-running tasks and integrations
- Maintain and improve data models and persistence: schema changes, migrations, query performance, data consistency
- Improve reliability and observability: structured logging, metrics, tracing, alerts, and practical runbooks
- Troubleshoot production issues, perform root cause analysis, and deliver robust fixes with minimal regression risk
- Write and maintain automated tests (unit/integration) and support QA with clear test scenarios and reproducible cases
- Participate in code reviews, contribute to backend best practices, and keep engineering documentation up to date
- Collaborate closely with Frontend, DevOps, and Product teams to refine requirements, estimate work, and deliver iteratively.

Nice to have: 
- Experience with LLM/GenAI integrations (OpenAI-compatible APIs), prompt orchestration, tool-calling patterns, and safety considerations
- Familiarity with RAG pipelines (embeddings, vector databases, document chunking, retrieval quality evaluation)
- Experience designing integration connectors 
- Knowledge of event-driven architecture (Kafka/RabbitMQ/NATS) and distributed systems concepts
- Experience with Docker and Kubernetes-based deployments (understanding runtime constraints and observability)
- Familiarity with security best practices: OAuth/OIDC, RBAC/permissions modeling, audit logs, data protection principles
- Experience with performance tuning: profiling, caching strategies (Redis), async I/O optimization
- Experience working in B2B SaaS / enterprise environments with reliability and compliance expectations.

We run a large fleet of Android devices driven by a Python/ADB automation script. Currently 240 physical devices, managed by 2 employees.

What you'll own:

• Reliability of the automation script (crash detection, auto-restart, logging)
• Proxy routing and failover across the fleet
• Per-instance device configuration
• Migration from physical devices to LDPlayer
• Simple status reporting so operators can see fleet health at a glance

• Proactive optimization

   

Requirements:

• Strong Python
• ADB and Android device automation
• Windows Server and virtualisation
• Networking basics: proxies, routing, iptables

• Experience running 20+ concurrent instances

   

Nice to have: Docker, monitoring tooling, experience with device farms

Paid trial task before we commit either way. 

Numerical Technologies LTD is a provider of custom software solutions and services specializing in risk, limits, and regulatory capital. We are currently looking for a Senior Python Developer to join our team. 

Project: Portfolio management systems for a US financial institution. 

What you will be doing:  

As part of the team, you will be participating in a client project focused on portfolio management solutions. You will help develop new software features, as well as support and maintain existing ones. You will be writing scalable and fault-tolerant code, debugging programs, and integrating applications with third-party web services. You will be collaborating closely with the client and product manager to understand the system’s functional and non-functional requirements, and contribute to code quality through unit testing, integration testing, code review, and system design using Python to build robust software that aligns with the client’s business needs. 

What we are looking for:  

• A strong programming background with Python and OOP skills.
• Deep understanding of algorithms and data structures.
• Experience building backend systems and working with REST APIs.
• Proficiency with SQL databases.
• Experience with FastAPI and Linux environments.
• Strong problem-solving skills and ability to collaborate effectively in a team environment.
• Upper-Intermediate level of English or above. 
• Experience with React and AWS is a plus. 

What we offer: 

• Competitive compensation depending on experience and skills. 
• Regular assessments and salary reviews. 
• Paid personal days. 
• Mental health support program. 
• Language classes. 
• Flexible working schedule.

Langate is an award-winning provider of software development services across three primary domains: Healthcare, Business, and Education. We build digital products that solve complex business challenges and create measurable value for our clients. We take pride in our long-term partnerships with U.S.-based companies and our experience delivering scalable software solutions for the Healthcare industry.

We are looking for an experienced Technical Lead who can take ownership of the platform’s backend architecture and lead the technical execution of the engineering team. This role combines architecture, hands-on development, and team leadership. You will design complex backend solutions, decompose them into actionable tasks, support engineers during implementation, review code, and help maintain a high engineering standard across the product.

 

About the project:
 

We are building a large AI-driven platform for the Healthcare domain designed to automate Revenue Cycle Management processes, including billing, payment posting, data processing, and other operational workflows that have traditionally required significant manual effort.
The platform combines traditional workflow automation, data-processing and scraping components, and AI-powered agents capable of handling more complex business processes.

This is a long-term product where the Technical Lead will have significant autonomy and the opportunity to influence backend architecture, engineering practices, technical decisions, and the future direction of the platform.

Requirements:
 

• 6+ years of commercial software engineering experience
• Strong hands-on experience with Python backend development
• Strong commercial experience with Node.js and TypeScript
• Proven experience designing and implementing backend architecture for complex applications
• Experience building scalable, high-load, or high-throughput systems
• Strong understanding of software architecture principles, system design, scalability, reliability, and performance
• Experience designing systems that consist of multiple services, modules, or integrations
• Strong experience with relational databases
• Practical experience with cloud platforms such as Azure or AWS
• Experience leading developers, reviewing pull requests, mentoring engineers, and supporting their professional growth
• Strong problem-solving skills and a pragmatic approach to architecture
• Practical understanding of modern AI-assisted development tools and how to use them effectively throughout the software development lifecycle
• Upper-Intermediate English or higher

Nice to Have:
 

• Experience working on Healthcare products
• Experience working with Redis or similar caching and data-processing technologies
• Experience building AI-powered products, automation platforms, or agent-based systems
• Experience designing distributed systems using Python

Responsibilities:
 

• Own and continuously develop the backend architecture of the platform
• Design scalable, reliable, and maintainable technical solutions for complex product requirements
• Make architectural and technical decisions together with the Head of AI and other stakeholders
• Translate high-level product and business requirements into clear technical solutions
• Mentor developers and support their technical and professional development
• Improve system performance, reliability, maintainability, and observability
• Support the product as it moves further into production and scales across additional modules and business processes
• Promote effective use of AI and LLM-based tools within the engineering workflow

Tech Stack: Python, Node.js, TypeScript
 

Schedule: 5/2, 8-hour working day (40 hr per week), flexible schedule. No late meetings and overtime. 

Hiring Process: HR Interview + Technical Interview.

 

We offer:
 

• Competitive compensation
• B2B contract, paid sick leave, 20 days of paid vacation
• Free English lessons  
• Flexible work schedule  
• Official Ukrainian holidays are non-working days  
• Paid courses and certifications  
• Сoach / psychologist consultation  
• Workshops  
• Career development plan
• Mentoring Education  
• Medical Health Insurance
  
   

Why Choose Us? What Do We Offer that’s Exceptional?
 

1. Cutting-Edge Technologies on Real Projects: At Langate, you’ll work with the latest technologies on live projects. We’re a dynamic, fast-growing company, so you’ll find a minimal amount of legacy systems and plenty of opportunities to implement new technologies.
    
2. Work-Life Balance with Benefits: We value work-life balance and offer paid time off, including vacation days and sick leave. Remote work options and hearty life are part of the package too.
    
3. Investment in Your Growth: We’re committed to your professional development. You can expect training programs, courses, and opportunities to enhance your English language skills.
    
4. Team Building and Unity: We know that a happy team is a productive team. That’s why we organize team-building events and group activities to foster strong bonds and a sense of belonging.

When you choose us, you’re choosing a company that values innovation, invests in its employees, and provides a supportive and engaging work environment. Join us in shaping the future of technology!

Need more information? Welcome!

Project overview:

Group107 is building a dedicated AI Unit to drive automation across the company and deliver AI-powered solutions for client projects.

We are hiring Junior AI Developers who think fast, learn faster, and are already productive with modern AI-assisted development workflows.

You will work directly under the Tech Director and grow into autonomous AI engineers capable of owning full delivery pipelines.

Requirements:

• 1+ year of hands-on software development experience (commercial or substantial personal projects)
• Demonstrable proficiency with AI coding tools: Claude Code, Cursor, GitHub Copilot, or equivalent
• Working knowledge of at least one: TypeScript/JavaScript or Python
• Experience deploying web applications (Vercel, Netlify, or similar)
• Understanding of LLM fundamentals: prompting, context windows, token management, tool use
• Ability to read, debug, and refactor AI-generated code critically — not just accept output blindly
• Git proficiency and basic CI/CD awareness
• Strong English communication (both written and spoken)
   

Nice to have:

• Experience with v0, Bolt, Lovable, Replit Agent, or similar AI app builders
• Familiarity with MCP (Model Context Protocol) and agentic AI patterns
• Contributions to open-source AI tools or published AI-related content
• Experience with RAG pipelines, vector databases, or embeddings
• Backend experience with Node.js, Next.js, or FastAPI
• Understanding of DevOps basics: Docker, serverless functions, edge computing
   

Responsibilities:

• Build internal automation tools and workflows using AI coding assistants (Claude Code, Cursor, Copilot)
• Develop and ship AI-powered features and full applications for client projects
• Prototype rapidly using vibe-coding methodology — prompt-driven development with AI pair-programming
• Integrate LLM APIs (Anthropic, OpenAI, open-source models) into production systems
• Deploy and maintain applications on modern platforms (Vercel, Cloudflare, AWS)
• Create and manage AI agents, MCP servers, and tool-use pipelines
• Evaluate, benchmark, and select AI models and tools for specific use cases
• Document solutions, write technical specs, and contribute to the internal knowledge base
  
  We offer:
• 20 vacation days (workdays)
• 7 sick days
• Personalized career growth
• Education reimbursement
• Corporate events and team buildings
• Equipment provided