Jobs at Djinni

We are looking for a Clinical LLM Engineer to work on real-world healthcare challenges, building LLM-powered solutions for clinical data extraction.

The platform is scaling across the US healthcare system, focusing on practical impact and improving care through better use of clinical data.

You will fully own prompt engineering and extraction quality, working directly with LLM APIs, while a separate team handles backend and infrastructure. Your focus will be on improving accuracy, system reliability, and adapting workflows as LLM capabilities evolve.

We offer:

• Flexible working hours;
• Paid vacation and sick leave;
• Health insurance;
• Professional growth opportunities;
• Internal English classes & compensation for courses;
• Legal and accounting support.
   

Requirements:

• 3+ years of Python development experience (data processing, scripting, automation);
• Hands-on experience with prompt engineering for LLMs in production;
• Experience working with US healthcare or clinical data;
• Strong understanding of unstructured data (text, PDFs, scanned documents);
• Experience with document classification or similar tasks;
• Experience with evaluation frameworks for LLM performance;
• Basic experience with cloud environments (AWS Lambda, EC2, simple pipelines);
• Experience with Git (GitHub);
• Understanding of Agile development practices;
• High English level.
   

Responsibilities

• Design and optimize prompts for accurate clinical data extraction;
• Adapt prompt strategies to handle real-world variability in medical documents;
• Build document classification workflows (labs, imaging, vaccines, etc.);
• Develop Python pipelines for LLM interaction and data processing;
• Evaluate and improve extraction quality across document types;
• Continuously adapt prompting approaches as LLM capabilities evolve.

IMPORTANT:

Preferred working schedule: 12:00–20:00 EEST (Ukraine time).

Availability during later hours is considered a plus, as the role may involve collaboration with clients and team members across different time zones.

Looking for a highly skilled Quality Assurance (QA) Engineer to join our dynamic team. This role requires proven experience in testing features from conception to production, as well as experience working with automation frameworks, such as Playwright, to ensure the overall quality of our product.

About the Project

A US-based fintech/edtech product used by thousands of educational organizations. The platform replaces paperwork and manual processes, making financial flows transparent and efficient.
The product has scaled from schools to districts and state-level implementations.
The team has been working on the project for 7+ years — stable product, mature codebase, strong engineering culture.

We are looking for someone who thinks in systems, understands business value, and takes ownership of delivery.

Key Responsibilities

• Experience in manual testing from 3+years
• Experience in automation testing from 2+ years
• Perform comprehensive QA testing of new features.
• Collaborate closely with Developers, Product Owners, and the wider QA team to see features through the entire software development lifecycle.
• Experience designing, implementing, and executing automated tests using an automation framework (such as Playwright) to ensure high-quality software releases.
• Create and manage detailed test cases and test plans.
• Execute API testing to validate service layer functionality.

Required Technical Skills

• Proven experience working with automation frameworks, such as Playwright
• JavaScript / TypeScript.
• Git.
• CI/CD (Continuous Integration/Continuous Delivery) familiarity.
• Strong knowledge of API testing.
• End-to-End Testing.
• Test Case creation and management.
• Upper-Intermediate level of Engilsh

What you’ll get:

• Flat hierarchies and short decision paths, openness to new ideas.
• Flexible working schedule.
• Reimbursement for professional certification.
• Annual paid vacation — 18 working days.
• Paid sick leave — 10 working days.
• English classes.
• IT club card — applicable for Lviv region.
• Sport classes compensation.
• Comfortable office locations or remote work.

Role format: combination of Manual QA and Automation QA responsibilities.

Interview Stages:

1. HR Interview

2. Technical Interview (Manual)

3. Technical Interview (Automation), includes one live coding task  that should be completed without the use of AI tools.

4. Interview with the Client

PwC is a global network of more than 370,000 professionals in 149 countries that turns challenges into opportunities. We create innovative solutions in audit, consulting, tax and technology, combining knowledge from all over the world.

PwC SDC Lviv, opened in 2018, is part of this global space. It is a place where technology is combined with team spirit, and ambitious ideas find their embodiment in real projects for Central and Eastern Europe.

What do we guarantee?

• Work format: Remote or in a comfortable office in Lviv — you choose.
• Development: Personal development plan, mentoring, English and Polish language courses.
• Stability: Official employment from day one, annual review of salary and career prospects.
• Corporate culture: Events that unite the team and a space where everyone can be themselves.

Join PwC Slovakia as a AI Engineer, where you’ll have the opportunity to grow your skills and contribute to AI and data science solutions for leading global clients. This role is designed for middle-level specialists and above (3+ years of experience) who can independently contribute to projects and deliver results, who want to build, integrate, and deploy machine learning systems and data-driven applications. We are looking for candidates who enjoy coding in Python, working with data, and turning ideas into reliable, scalable solutions.

Project you could be involved in:

• Natural Language Data Exploration: Develop dashboards powered by AI for intuitive business data analysis.
• Document Interaction: Design tools enabling seamless interaction with unstructured and structured text documents.
• Knowledge Assistant: Implement ERP transformation with AI-powered tools to resolve employee inquiries efficiently.
• Agricultural Monitoring: Utilize Computer Vision for analyzing satellite imagery on a large scale.
• Automated Reconciliation: Create systems to identify anomalous transactions in accounting ledgers.

What You’ll Do:

• Project Participation: Participate in AI and data science projects from conception to deployment, contributing to solution design and supporting timely delivery of assigned tasks.
• Solution Development: Support the development of AI and ML solutions with a strong focus on Python-based implementation, working across areas such as Large Language Models (LLMs), RAG, classical machine learning and data analysis.
• Learning & Development: Continuously develop technical skills by following AI and data science trends, learning new approaches, and contributing to improvements of existing solutions and processes.

What We’re Looking For:

• Programming Skills (Key Requirement): Solid programming skills in Python (e.g. pandas, numpy, scikit-learn, plotly). Ability to write and understand code is essential. Experience with other programming languages is a plus.
• AI/ML Background: Hands‑on academic, project, or entry‑level experience with machine learning, data science, NLP, Computer Vision, or Generative AI (LLMs, RAG). The focus is on building or implementing solutions, not only using AI tools. Strong foundations in statistics and ML fundamentals are valued.
• Databases: Basic experience with SQL databases; familiarity with NoSQL databases is an advantage.
• Analytical Thinking: Strong analytical mindset with the ability to approach problems logically and creatively.
• Independence & Responsibility: Ability to work independently on assigned tasks and deliver results with guidance when needed.
• Language Skills: Fluent in English (B2 level or higher).

Policy statements:
www.pwc.com/ua/uk/about/privacy.html

About us:

Atto Trading, a dynamic quantitative trading firm founded in 2010 and leading in global high-frequency strategies.
We are expanding an international, diverse team with experts in trading, statistics, engineering, and technology. Our disciplined approach, combined with rapid market feedback, allows us to quickly turn ideas into profit. Our environment of learning and collaboration allows us to solve some of the world’s hardest problems, together. As a small firm, we remain nimble and hold ourselves to the highest standards of integrity, ingenuity, and effort. 

Role Highlights: 

We’re looking for a Talent Sourcer / Recruiter to help identify and engage exceptional technical and quantitative talent. You will support sourcing, outreach, and interview coordination while learning to operate in a fast-paced, high-standard environment. 
This role is ideal for someone ambitious, detail-oriented, and motivated by performance and impact.

Please note: This role requires in-office presence in one of our locations - Kyiv, Ukraine or Lisbon, Portugal.

Responsibilities: 

• Build and maintain candidate pipelines for highly selective technical roles (quant research, software engineering, trading operations, infrastructure) to support current and future hiring needs.
• Proactively source, identify, research, and engage active and passive candidates via LinkedIn, GitHub, Djinni, job boards, referrals, and niche communities (quant, code/dev, competitive programming), leveraging creative sourcing strategies (Boolean search, social networks, community channels).
• Identify and shortlist relevant profiles based on experience, achievements, tech stack, and location.
• Conduct initial screening, including resume evaluation against role requirements.
• Run outreach campaigns and manage candidate engagement, including personalized messaging, follow-ups, screening requests, and pipeline nurturing.
• Partner with senior recruiters and hiring managers to support the full recruitment cycle, including interview coordination, scheduling, and calendar management.
• Maintain and update the ATS, ensure accurate daily candidate status tracking, and support overall pipeline hygiene.
• Support market and talent research (hiring trends, layoffs, competitors, new sourcing channels).

Requirements:

• Bachelor’s Degree.
• Upper-Intermediate or higher level of English.
• 2+ years of experience in technical recruitment, talent sourcing, or recruitment coordination in a fast-paced environment (software, fintech, gamedev or similar).
• Experience sourcing/recruiting in the US market.
• Proactive sourcing skills (LinkedIn Recruiter, Boolean search).
• Proficiency with modern recruiting tools (including LLM-based tools).
• Experience with ATS (Greenhouse, Lever, or similar) is highly beneficial.
• Strong communication and negotiation skills.
• Ability to work independently, proactively in a fast-paced, high-performance environment with high-quality standards.
• Strong organizational skills, attention to detail.
• Ownership mindset.
• Interest in the trading domain will be a plus.

What We Offer:

• Competitive compensation package
• Performance-based bonus opportunities
• Paid time off (25 days)
• Healthcare and sports/gym budget
• Mental health support, including access to therapy
• Relocation support (where applicable)
• Learning and development support, including courses and certifications
• Clear growth opportunities within the recruitment team
• Access to professional tools, software, and resources
• Fully equipped workstations with high-quality hardware
• Modern office with paid lunches
• International team meet-ups

Our motivation:

We are a company committed to staying at the forefront of technology. Our team is passionate about continual learning and improvement. With no external investors or customers, we are the primary users of the products we create, allowing you to make a real impact on our company's growth.

Ready to advance your career? Join our innovative team and help shape the future of trading on a global scale. Apply now and let's create the future together!

We are hosting the largest public online catalog of chemical compounds — over 11 billion compounds from suppliers from all over the world — and provide the researchers and procurement professionals with ultra-fast chemical and text searches for the best exploring and purchasing experience.

We combine expertise in chemical sourcing and procurement with one in building integration solutions for smooth and seamless ordering process. One of our main focuses now is building B2B products to cooperate with various Pharma companies.

We are opening a Product Owner position aiming to expand our business in SaaS model.

IN THIS ROLE YOU WILL:

1. Develop Product Vision:
   
    
   1. Engage closely with customers to define and continually refine the product vision, ensuring alignment with market needs and business objectives
   2. Translate customer needs into detailed product requirements
2. Manage Product Backlog:
   
    
   1. Create and maintain a comprehensive product backlog
   2. Prioritize backlog items based on value and strategic goals
   3. Facilitate backlog grooming sessions and ensure that the backlog is organized and actionable for the development team
3. Ensure Project Success:
   
    
   1. Coordinate project timelines and deliverables with customers.
   2. Monitor progress to ensure alignment with project goals and customer’s expectations
   3. Implement best practices to manage risks and ensure that project deliverables meet quality standards and customer satisfaction
4. Facilitate Communication:
   
    
   1. Serve as the main point of contact for product and project updates
   2. Keep stakeholders informed and engaged throughout the project lifecycle

WE ARE LOOKING FOR SOMEONE WHO HAS:

• Experience & Expertise:
• 3+ years in a similar role (Business Analyst/Product Owner)
• Experience with Jira Software
• Strong understanding of Agile methodology
• Skills & Proficiencies:
• Upper-intermediate English proficiency, with strong communication and writing skills in both Ukrainian and English
• Analytical mindset with the ability to understand and address complex business processes
• High attention to detail and strong responsibility
• Personal Attributes:
• A strong sense of ownership and pride in product development
• Capability to adjust to changing priorities and new challenges

WE OFFER:

• Competitive compensation depending on the experience and skills
• Flexible working hours
• Interesting business domain
• Comprehensive benefits package including sick leaves, annual vacation, medical insurance and sport compensations
• English language courses
• Individual annual budget on education
• Friendly working environment

Requirements

• Strong knowledge of PHP (1+ year of hands-on experience) and Laravel framework (1+ year);
• Basic understanding of front-end technologies: JavaScript, HTML5, CSS3;
• Experience with version control systems such as Git, Bitbucket, or similar;
• Hands-on experience integrating third-party APIs (Google, Facebook, and others);
• High level of self-organization, responsibility, creativity, and professional ethics;

• Strong communication skills and a proactive mindset. 

  Responsibilities

• Develop, maintain, and support company websites and web applications;
• Communicate with clients, clarify requirements, answer questions, and provide effective solutions;
• Participate in all phases of the software development lifecycle;
• Follow best practices in coding, security, and data protection, especially when working with sensitive data (API keys, tokens, etc.);

• Collaborate with the team to improve product quality and performance.

   

  We offer an opportunity to grow professionally, work on interesting projects, and be part of a supportive and dynamic team.

About the Position

We’re growing fast and looking for a Senior Backend Engineer to join our Engineering team and help build the infrastructure that powers our platform at scale.

This is a high-impact role where you’ll work alongside top-tier engineers, designing and building secure, high-performance systems in a fast-paced environment. If you enjoy solving complex technical challenges and want your work to have real impact — we’d love to meet you.

What We’re Looking For

• Bachelor’s degree in Computer Science or a related field
• 5+ years of experience in backend development
• Strong experience building scalable, production-grade systems
• Proficiency in Node.js
• Experience with SQL and NoSQL databases
• Familiarity with cloud platforms and microservices architecture
• Strong problem-solving skills and attention to detail
• Passion for writing clean, maintainable, and efficient code

Bonus Points For

• Experience in cybersecurity or building security-focused products
• Experience working in startup or high-growth environments
• Familiarity with DevSecOps / SDLC tools
• Experience with distributed systems and high-scale data processing

VIP Manager (iGaming)
 

Responsibilities
— Manage a portfolio of VIP clients following established scripts and guidelines.
— Maintain daily/weekly touchpoints (messengers / calls / email), based on individual client needs.
— Provide basic personalized offers using a bonus matrix (cashback / free spins / free bets / bonuses).
— Control bonus issuance and ensure compliance with terms & conditions.
— Collect and analyze client feedback.
— Handle escalations (payments / verification / risk / support).
— Prepare basic reports as required.
 

Requirements
— 1.5–2+ years of experience in iGaming / online casino.
— Proven experience handling client objections.
— Strong understanding of VIP customer service and communication.
— High level of responsibility and attention to detail.
— Stress resistance, flexibility and adaptability.
— Excellent communication skills.
— Ability to multitask and work in a fast-paced environment.
— Team player mindset.
— Results-driven with understanding of key KPIs.
 

Languages
— English: B2+
 

Nice to Have
— Experience working with iGaming B2B CRM systems.
 

Working Conditions
— Remote work.
— Flexible start of the working day.

We are looking for a talented Lead QA Automation Engineer with a passion for delivering the highest quality mobile and web apps.

As part of our team, you will be building automated QA pipelines for our existing products. You’ll be responsible for ensuring swift and stable product releases by performing automated cross-platform testing (Web, Mobile, API) and improving our CI/CD pipelines to maintain fast delivery pace.

Ready to be part of a modern, fast-growing, #1 product in its niche while gaining extensive professional growth? Apply now!

Who are we?

memoryOS is world’s #1 app for improving memory and focus, helping people overcome forgetting curve and retain needed knowledge. Proven learning and memory techniques are merged with duolingo-like gamified e-learning with patented virtual mind palace tech. Co-founded by 2X World Memory Champion — Jonas von Essen.

We’re a remote team of 30+ diverse, like-minded professionals, united in solving the problem of the forgetting curve.

We are proud to be the Most Funded App on Kickstarter. The memoryOS was featured on TechCrunch and recognized by Google Brands Accelerator as a product that is “light years ahead of any other company in memory space”.

What you’ll be working on

• Work closely with the existing manual QA teams to identify the most obvious and impactful QA automation opportunities.
• Set up an infrastructure for QA automation.
• Speed up delivery times using automated testing across company’s products.
• Convert the existing manual QA teams into automated QA units.
• Develop automated QA live agents to test and observe live products.

About you

• 4+ years of experience in automation QA.
• Strong experience with mobile, web, and API testing.
• Strong background in manual QA is highly desirable.
• Solid proficiency with QA and AQA tools (Playwright, Appium, etc.).
• Proficiency with QA documentation (test cases, bug reports, etc.).
• Experience with CI/CD pipelines.
• Experience with Agile methodologies.
• Excellent communication skills and keen attention to detail.
• Leadership and ownership mindset.
• English B1 or higher.

You will also get

• Comprehensive product testing and a diverse array of tasks.
• Developing solutions that have a direct impact on business.
• Transparent management, clear communication, and regular feedback.
• The opportunities to be involved in interesting and useful product for millions of people.
• The modern team of like-minded and diverse professionals.
• Enjoy a vacation and paid sick leave days to relax every year.
• Fully remote: you are free to choose your productive work time and place.

Getting the job

Enjoy building a top-level product with us while gaining extensive professional experience in a company with an important mission.

Step by step for this position:

1. Screening call (up to 1 hour): Position discussion, check basic competencies, and culture fit.
2. Technical interview (2 hours): Detailed сase approach to identify experience, technical skills, and core competencies.
3. Referral: Recommendations from the previous workplace.
4. Full-day interview (up to 6 hours): A workday simulation. You’ll be working with your future team members, will explore the codebase that you’ll be working on, and will be fixing/resolving several real work issues.
5. Final interview with CEO and CTO (30 minutes): Summarize experience and assess alignment with the company’s strategic goals. It’s the best time for any final questions.
6. Offer call (30 minutes): Discussion of a Job Offer Proposal.

Let’s make the world remember!

Global marketing agency ClickDealer is looking for an experienced SMM Specialist to join the team and help build a strong and engaging B2C social media presence!

More about the company: https://clickdealer.com/   

What You’ll Do:

 • Manage social media platforms of our E-commerce brands (Instagram, Facebook, Pinterest)

 • Develop and execute content strategy

 • Create content: posts, stories, captions, and texts

 • Participate in generating creative ideas for video content and Reels

 • Prepare clear briefs (tasks) for designers

 • Ensure consistency, quality, and regularity of publications

 • Analyze performance and track key SMM metrics

 • Optimize content strategy based on analytics insights 
  

What We’re Looking For:

 • Experience in SMM / content creation / digital marketing

 • Understanding of social media trends and algorithms

 • Strong knowledge of SMM metrics and analytics

 • English level – Upper Intermediate or higher

 • Responsibility, creativity, and structured approach

 • Experience in setting up paid social campaigns will be a plus / willingness to learn   
 

What We Offer:  

 • Work with a global brand in a dynamic international company.

 • Competitive salary (linked to USD), paid vacations and sick leaves.

 • Coverage of language courses and sport gym expenses;

 • Interesting tasks and participation in corporate trainings and seminars   

ClickDealer is looking for Junior Affiliate Manager even without experience in Warsaw.

ClickDealer is a global marketing company that provides performance marketing solutions for publishers, advertisers, and agencies worldwide.The company has been in the performance marketing business since 2012, partnering with over 2000 advertisers across 12 main verticals.

The company is headquartered in the Netherlands, spanning over 5 offices across the globe and providing support in 12 languages.
 
Required Skills:

• Upper-intermediate+ English level;
• High analytical skills and ability to work with the large amount of data;
• Readiness for prompt actions and responsibility for their implementation;
• High communication and presentation skills;
• Ability of constant self-educations.
   

Responsibilities:

• Search and onboarding of new partners;
• Maintenance of efficient written and verbal communication with partners;
• Manage business negotiations with partners;
• Analysis of sales/profit amount’s fluctuation as well as competitors’ activity and reaching target KPIs;
• Monitoring of trends and tendencies of online marketing.

The company is ready to offer:

• Opportunity to develop and gain new knowledge in a company oriented to the international market;
• 20 business days of paid rest;
• Medical insurance;
• 50% compensation for sport activities / sessions with a psychotherapist / courses / English, etc.
• Paid sick leave;
• Sharing experience and knowledge between teams.

International online marketing IT-company ClickDealer is looking for a specialist for the position of Middle/Senior Affiliate Manager.

https://www.clickdealer.com/

ClickDealer is one of the top 5 CPA networks in the world! The company has been in the performance marketing business since 2012, partnering with over 2000 advertisers across 20 main verticals. ClickDealer is headquartered in the Netherlands, spanning over 5 offices across the globe.

If you have a high level of communication skills, freely speak English, have more than 2 years of experience in Affiliate Marketing, and have knowledge of traffic marketing campaigns and flows, we will be happy to get in touch and discuss our potential cooperation.

What we expect:

⁃ experience in affiliate marketing 2+ years;
⁃ English level Upper-intermediate and higher;
⁃ ability to effectively manage and build client relationships;
⁃ able to succeed in and enjoy a fast-paced, quick-witted environment;
⁃ good analytical skills and work with a large amount of data;
⁃ readiness for bold decisions and responsibility for their implementation;
⁃ high communication and presentation skills.
 

What is to be done:

⁃ recruit new affiliates and work with existing ones;
⁃ maintaining effective communication with partners through calls, email and messengers;
⁃ manage multiple affiliate campaigns;
⁃ be responsible for partner’s budget;
⁃ risk management;
⁃ manage the Contract/IO process to ensure that all paperwork is properly completed;
⁃ act as the first point of contact to clients and address client needs as needed;
⁃ cultivate relationships with clients, gain deep insight into their business and ultimately provide solutions to their marketing and advertising goals;
⁃ keeping affiliates up to date on any program enhancements;
⁃ maintain the highest level of customer service;
⁃ meet monthly, quarterly and annual goals for revenue growth;
⁃ develop affiliate contact management strategy;
⁃ controlling traffic quality and volume;
⁃ monitoring trends and tendencies in online marketing.
 

We offer:

⁃ opportunity to develop and gain new knowledge in a company oriented to the international market;
⁃ flexible start: the day can be started from 8:00 to 10:00, focusing on personal preferences and team meetings;
⁃ 20 business days of paid rest;
⁃ medical insurance;
⁃ 50% compensation for sport activities / sessions with a psychotherapist / courses / English, etc.
⁃ paid sick leave;
⁃ sharing experience and knowledge between teams.

The product company is looking for a Python Engineer (AI/ML) in Warsaw.

The company is a successful market leader, a live-streaming Platform with 450+ Million registered users.
Their B2C mobile platform allows millions of talented people worldwide to connect with their fans and monetize their talents.
The company was founded in 2018 in the USA and is powered by 350+ global employees.

► They offer: options, medical insurance (100% for employees and 75% for family members), lunch in the office, parking, multisport card.

► Requirements: experience with AI/ML, Flask, microservices, NoSQL databases.

An international product company in the chemical tech and pharma solutions domain is looking for a Product Owner to help drive the growth of its B2B SaaS products and online marketplace platform.

The company is part of a large industrial group and develops a global online platform for researchers, laboratories, and pharmaceutical companies. The product hosts one of the world’s largest public catalogs of chemical compounds, helping clients across Europe and the US quickly discover, compare, and purchase materials for research and development.

The team is активно expanding its SaaS direction and building B2B products focused on procurement automation, integrations, and collaboration with global pharma companies.
 

📍 Location: Kyiv, hybrid format (Lisova metro station)
 

In this role, you will:
- Develop and evolve the product vision aligned with business goals and customer needs
- Communicate directly with customers and gather business requirements
- Translate customer needs into detailed product requirements
- Create, maintain, and prioritize the product backlog
- Facilitate backlog grooming sessions with the development team
- Coordinate timelines and product delivery
- Monitor project progress and ensure alignment with customer expectations
- Act as the key point of contact for stakeholders regarding product updates and delivery status

We are looking for someone who has:

- 3+ years of experience as a Product Owner or Business Analyst
- Hands-on experience with Jira Software
- Strong understanding of Agile/Scrum methodologies
- Upper-Intermediate+ English level
- Excellent communication and analytical skills
- Ability to work with complex business processes
- Strong attention to detail and ownership mindset
- Ability to adapt in a fast-paced product environment

Nice to have:

- Experience working with SaaS products
- Experience in marketplace, B2B, or procurement domains
- Understanding of pharma, biotech, or chemical-related industries

What the company offers:

- Opportunity to work on a global product for international markets
- Medical insurance
- Sports compensation
- English courses
- Individual education and development budget
- Friendly and professional team environment

Backend Developer (Node.js) for the  international product IT company,  which provides a full-stack package of complex AdTech solutions for digital advertisers, publishers and ad agencies worldwide. 

  The company develops white-label platforms for enterprise clients—custom turnkey solutions to automate and optimize digital advertising.

Products company : SSP, DSP, Ad Exchange platforms.

Main markets - Tier 1-2 

The technical team - up to 30 people (CTO, Team Lead, Back-end -10, Front-end developers, QA, DevOps )

Project stack: Node.js (backend), NoSQL, SQL, Redis, MongoDB,  Linux.

Locations/Offices - Kyiv, Lviv, Odesa, Mykolaiv or remote.

 Requirements:

• At least 5 + years of backend development experience, with a strong focus on Node.js
• Deep understanding of asynchronous programming in Node.js and event loop
• Knowledge or  experience with high-load systems
• Familiarity with SQL, NoSQL, and in-memory key-value databases for data storage and optimization;
• Knowledge of network protocols such as HTTP, TCP, and FTP;
• Expertise in identifying and resolving issues efficiently;
• Experience or understanding unit testing;
• Experience with Linux servers, handling basic administration tasks;
• Performance optimization skills;

Responsibilities:

• Write clean, efficient, and maintainable code following best practices
• Develop and maintain scalable backend services using Node.js 
• Debug and resolve issues in the backend systems
• Manage and optimize SQL and NoSQL databases 
• Write and maintain unit tests to ensure code quality
• Collaborate with team lead, frontend developers, CTO, Delivery Coordinator and other team members
•  Continuously learn and apply new technologies to improve backend systems