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Senior Full-Stack Engineer (Backend Focus, Agentic AI)

Location:
Remote
Level:
Senior
English:
Project stage:

Proof-of-concept in 2 months, followed by MVP expansion over 4 months

Project Overview

Our client is building an AI-driven learning platform that transforms technical documentation (PDFs, presentations, technical manuals) into interactive courses with automated video generation and intelligent AI tutoring. The platform serves pharmaceutical, manufacturing, and R&D sectors where subject matter experts need to convert complex technical content into training materials without relying on traditional learning and development teams.

We are looking for a Senior Full-Stack Engineer with strong backend expertise to be responsible for core backend services and agentic AI workflow integration. You'll architect and implement event-driven systems that orchestrate multi-stage AI pipelines (document extraction, content structuring, video generation), integrate external AI services, and build reliable job processing with checkpointing and error recovery.

This role requires strong full-stack development skills with a deep focus on the backend, hands-on experience in building or integrating agent-based workflows, and familiarity with LLM-based systems.

Technical Details:
  • Backend: NestJS, Node.js, TypeScript
  • Database: PostgreSQL (Supabase), Row-Level Security (RLS)
  • AI/LLM: OpenAI API, LangChain/LangGraph, Arize AI/Phoenix
  • Job Queues: Redis/BullMQ or AWS SQS
  • Storage: AWS S3 with signed URLs
  • Email: Resend or SendGrid
  • Error Monitoring: Sentry
  • Analytics: Mixpanel, Amplitude, or PostHog
  • Infrastructure: AWS (Lambda, ECS Fargate, CloudFront), Docker, Terraform/Ansible
  • CI/CD: GitHub Actions
  • Observability: Sentry, CloudWatch
Job Highlights:
  • Cutting-edge agentic AI application combining multiple AI services into cohesive workflows
  • Real-world impact, helping technical experts create accessible learning content
  • Opportunity to work with OpenAI, Anthropic, and specialized AI services (document extraction, video generation)
  • Greenfield project with modern tech stack and architectural freedom
Team Composition:

Architect, Software Engineer, Designer, QA Engineer, DevOps Engineer, BA, Delivery Manager

Responsibilities
  • Build backend services and APIs that orchestrate multi-step workflows with checkpointing and error recovery
  • Design and implement agentic systems for course generation, chatbot functionality, and content processing
  • Operationalize prompts and LLM workflows designed by client-side AI and instructional design experts
  • Integrate third-party APIs (LLM providers, video generation) with proper rate limiting, retry logic, and cost monitoring
  • Implement secure authentication flows, RBAC policies, and tenant isolation using Supabase Auth and RLS
  • Write database migrations, design efficient schemas, and optimize queries for performance
  • Contribute to frontend development when needed to support full-stack features
  • Integrate application-level monitoring (Sentry) and analytics tools (Mixpanel/Amplitude/PostHog) with backend services
  • Participate in architecture decisions, code reviews, and sprint planning
  • Collaborate with the solution architect on technical design decisions
  • Work with DevOps engineer on deployment requirements and observability tooling
  • Partner with a frontend-focused engineer on API contracts, data models, and full-stack feature integration
Qualifications
  • 5+ years of full-stack development experience with a strong backend focus (Node.js, TypeScript)
  • Experience using AI-powered productivity tools (Cursor, VS Code with Copilot, or similar AI-enhanced IDEs) and LLMs for research and problem-solving (ChatGPT, Claude, etc.)
  • Experience building or integrating agentic workflows or LLM-powered applications
  • Hands-on experience with LangChain, LangGraph, or similar orchestration frameworks
  • Familiarity with OpenAI and/or Anthropic APIs, prompt engineering, and structured output validation
  • Working knowledge of React and Next.js (able to contribute to full-stack features when needed)
  • Solid understanding of PostgreSQL (schema design, migrations, query optimization)
  • Experience with event-driven architectures, job queues (Redis/BullMQ, AWS SQS), and asynchronous processing
  • Familiarity with NestJS or similar backend frameworks (Express, Fastify)
  • Experience with authentication, authorization, and multi-tenant data isolation patterns
  • Strong problem-solving skills and ability to work autonomously with minimal oversight
  • Clear written and spoken English for async collaboration and documentation

Nice to Have

  • Experience with Supabase (Auth, RLS, Realtime)
  • Familiarity with LLM observability tools (Arize AI, Phoenix, LangSmith)
  • Experience designing systems for multi-LLM provider support
  • Experience with document processing pipelines or OCR integration
  • Knowledge of video generation APIs (Synthesia or similar)
  • Familiarity with error monitoring (Sentry) and product analytics tools (Mixpanel, Amplitude, PostHog)
  • Understanding of prompt engineering principles and best practices
  • Experience with evaluation frameworks for LLM-generated content
  • Background in EdTech, content generation, or learning platforms
  • Familiarity with Tailwind CSS and modern UI development patterns
  • GitHub-based workflows and conventional commits

Workflow

Our Benefits

Work & Life Balance

20 paid working days off
Soulful corporate events and team buildings
Opportunity to work remotely

Work Environment

All the necessary equipment
A comfortable and modern office
Accounting services
Relocation reimbursement

Health & Wellness

Health insurance
$600 extra for the health care, sports or mental health
10 working days of sick leave

Professional Development

$600/year you can spend on:
Courses, trainings, seminars
Improvement of qualification/ certification
English lessons

[ our values/ ]

What Keeps Us Sharp and Steady

We cut the fluff and keep it real—owning our work, refining our craft, and always leveling up. No excuses, just a team that’s in it together, pushing boundaries and delivering results.
Pragmatic

Pragmatic

Theory’s cute, but results pay the bills. Perfect’s a fairy tale—done right is what counts.
Adult

Adult

No drama, no sugarcoating. We own our wins and our screw-ups, and treat failure like free tuition.
Craftspeople

Craftspeople

We’re not assembly-line coders. We build, we refine, and we don’t put a fresh coat of paint on bad code.
Forever Learners

Forever Learners

Falling behind? We leave that to others. Leveling up fast, chasing down answers, and never settling for “I don’t know.”
Great Allies

Great Allies

No lone wolves here. We listen before we talk, communicate like grown-ups, and make the ride better for everyone.

[ global team, remote freedom/ ]

Headquartered in the USA and Ukraine, but our team? We're everywhere.

We’re fully remote, so you can work wherever you’re most productive.
Costa Rica
Team Hub
USA
Strategic & Office & Team Hub
Spain
Strategic & Team Hub
Poland
Strategic & Team Hub
Romania
Team Hub
Ukraine
Office & Team Hub
Costa Rica
Bulgaria
Team Hub
Georgia
Team Hub
Armenia
Team Hub
Lviv
Myroslava Skoryka Street, 31, Lviv, Ukraine, 79000
diana.zherebetska@mev.com
Cherkasy
Pushkina Street, 100, Cherkasy, Ukraine, 18000
vladyslava.korol@mev.com
Walnut Creek
1212 Broadway Plaza, Walnut Creek, California, USA
solutions@mev.com

FAQs

Got questions? No worries, we've got all your answers covered in our FAQ!

Absolutely! We offer flexible remote work options, so you can work from anywhere worldwide. Prefer the office vibe? We’ve got a modern, comfy workspace in Ukraine, fully equipped with everything you need.

We have a structured onboarding process to make your transition smooth and welcoming. You’ll have access to mentors, detailed resources, and a supportive team to help you hit the ground running.

We conduct performance reviews every six months to assess your achievements, align your goals with the company’s vision, and identify growth opportunities. During these reviews, you’ll:

  • Get a clear picture of your strengths and areas to improve
  • Receive feedback on your performance and productivity
  • Set goals that align with your career path and the company’s strategy

At MEV, we’re all about continuous learning and growth. Here’s what a typical path looks like for a Software Engineer:

  • Junior Engineer: Build foundational skills like bug fixing and documentation with guidance from senior team members.
  • Mid-level Engineer: Take on more complex tasks, mentor junior engineers, and play a bigger role in problem-solving and code optimization.
  • Senior Engineer: Lead projects, tackle high-level technical challenges, and align technical work with business goals. You’ll also mentor others and drive innovation within the team.
  • Staff Engineer: Lead large-scale projects, design system-wide architectures, and manage multi-team efforts. You’ll mentor senior engineers and steer the technical strategy.

At every step, your responsibilities grow—and so does your impact. Regular reviews and professional development opportunities keep you moving forward.

We believe in open, transparent communication and a collaborative culture. Regular team meetings, project updates, and social events keep everyone connected and engaged.

We’re big on balance. Here’s what we offer:

  • 20 paid vacation days per year
  • 10 sick days
  • Flexible working hours

Your well-being matters to us. We offer:

  • Comprehensive health insurance
  • $600 annually for healthcare, sports, or mental health support

We invest in your growth. You’ll get $600 annually to spend on:

  • Courses, trainings, and seminars
  • Professional certifications
  • English lessons

Our culture is built on mutual respect, continuous learning, and a passion for innovation. We value diversity, creativity, and a good sense of humor. We’re a team of professionals who support each other, celebrate successes, and challenge ourselves to grow.

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