Senior Backend Engineer

Praktika.ai

Senior Backend Engineer developing backend solutions for AI-driven language learning at Praktika. Leading projects and collaborating with cross-functional teams on innovative education technology.

Posted 6/10/2026full-timeRemote • 🇬🇧 United KingdomSeniorWebsite

Tech Stack

Tools & technologies

AWSDockerFlutterJavaScriptKafkaMicroservicesMongoDBPostgresPythonReactRedisSwiftTerraform

About the role

Key responsibilities & impact

Design, develop, integrate, validate, and operate new projects, features, bug fixes, and other improvements.
Architect and implement backend solutions with Python (FastAPI, asyncio), Databases (PostgreSQL, MongoDB), Cache layers (Redis, Valkey), Message Brokers (Kafka, Redis Queues, Amazon SQS), and transport protocols (Rest APIs, Websockets, SSE, WebRTC with LiveKit).
Work with teams directly: Mobile (Swift, Flutter), Web (React, Javascript), Data Analyst, Product, Designers on integrating new solutions.
Develop well-architected, clean, maintainable, and testable code following clean architecture principles and ADRs agreed within the company.
Write unit, integration, e2e tests to comprehensively own the quality of solutions you build, ensure reliability, and support continuous integration and deployment.
Utilize Terraform for Infrastructure-as-Code management, Docker for containerization, and AWS ECS or EKS for deployments.
Work with AWS infrastructure and apply DevOps best practices to improve scalability and reliability.
Continuously improve processes and automate incoming requests from other teams by contributing to internal systems, automation scripts, shared skills, MCP, context, and script libraries.
Work closely with AI experts to build data-driven approaches to language learning.

Requirements

What you’ll need

Proven track record of leading B2C / Consumer-facing projects and measured impact on customers and business.
8+ years of backend development experience with strong Python expertise.
Proven experience with ASGI frameworks such as FastAPI, Starlette, or similar technologies.
Experience with SQLAlchemy or other ORM technologies.
Strong knowledge of designing, maintaining, and optimizing both PostgreSQL and MongoDB.
Experience with microservices and event-driven architectures, including system design and architecture skills.
Solid understanding of clean architecture principles and writing highly testable code.
Familiarity with Docker and containerized environments.
AWS infrastructure and DevOps experience is a significant plus.
Strong problem-solving skills and the ability to work independently in a fast-paced startup environment.
Excellent written and spoken English.
Bachelor's or Master's degree in Computer Science, Engineering, or a related field is a plus.
Genuine passion for education technology and AI.

Benefits

Comp & perks

Competitive salary
Flexibility to work remotely
Health and wellness benefits to support your overall well-being
Opportunity for rapid career growth and personal development
Access to an AI toolkit including ChatGPT, Copilot, and other productivity tools
Annual educational budget of up to $1,000

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PythonFastAPIPostgreSQLMongoDBRedisKafkaTerraformDockerAWSSQLAlchemy

Soft Skills

problem-solvingindependencecommunicationleadershipcollaborationadaptabilityattention to detailcreativitycritical thinkingtime management

Certifications

Bachelor's degree in Computer ScienceMaster's degree in Computer ScienceEngineering degree