Resume vs Job: Senior Node.js Developer at CoreStar

Updated: March 17, 2026

Resume vs Job: Senior Node.js Developer at CoreStar

A detailed comparison of Dmitry Ivanov's resume against the job requirements for a Senior Node.js Developer at CoreStar. The analysis highlights strengths and areas for improvement.

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Overall score

76 /100

Strong matchAnalysis complete

Evidence fit

ATS presentation

Confidence

85%

Resume Example

Dmitry Ivanov

Senior Node.js Developer

+35796264672 | randomuser@example.com | Limassol, Cyprus

Summary

Senior Backend Developer with 7+ years of experience building scalable high-load systems using Node.js, JavaScript, and TypeScript. Design and implement microservices, REST/GraphQL APIs, and event-driven architectures (Kafka, NATS, Redis). Strong focus on performance optimization, database efficiency (MySQL, MongoDB, ClickHouse), and system reliability. Deep understanding of JavaScript runtime internals (event loop, async I/O, performance tuning). Experienced with Docker, Kubernetes, and full lifecycle development from architecture to production.

Experience

Sr. Back End Developer

Apr 2025 - Mar 2026

BrainRocket, Limassol

Designed and developed high-load backend services using Node.js (NestJS) and TypeScript in a microservices architecture
Built REST and GraphQL APIs, as well as event-driven systems using Kafka and NATS
Implemented real-time and asynchronous data flows, improving system scalability and resilience
Integrated MySQL with ClickHouse via Debezium for streaming and analytics pipelines
Optimized performance using Redis caching, efficient DB queries, and Node.js runtime-level optimizations (event loop, async processing)
Deployed and maintained services in Docker/Kubernetes environments with focus on reliability and observability (Prometheus, Grafana)
Monitored and troubleshot production systems, resolving bottlenecks and ensuring high availability
Developed and maintained unit and integration tests to ensure system stability
Worked closely with product and cross-functional teams from architecture design to production delivery

Sr. Full Stack Developer

Nov 2023 - Apr 2025

C.T.Co

Designed and implemented backend systems from scratch using Node.js, JavaScript, and TypeScript
Built scalable REST and GraphQL APIs with clear contracts and maintainable architecture
Developed distributed services with Redis and asynchronous communication patterns
Integrated third-party APIs and external systems with robust error handling and retry strategies
Led system design decisions, including data modeling (DynamoDB) and service boundaries
Optimized application performance and backend workflows using efficient data access patterns
Deployed applications using Docker and nginx, ensuring reliable and predictable system behavior
Collaborated with frontend (Vue.js 3) and product teams to deliver end-to-end features

Lead Angular Developer

Mar 2023 - Sep 2023

FxPro, Limassol

Developed and supported high-traffic web platforms using Node.js, JavaScript, and AWS infrastructure
Designed and maintained REST APIs serving multiple international websites (SSR-based)
Improved application performance and availability, increasing Lighthouse score from 55 to 92
Reduced page load time and improved SEO traffic through backend and frontend optimizations
Used Redis caching and efficient data handling strategies to improve response times under load
Monitored production systems and performance metrics using observability tools (Prometheus, Grafana)
Collaborated across teams to ensure stability and reliability of production systems

Lead JavaScript Software Engineer

Nov 2020 - Feb 2023

EPAM

Led technical direction and architecture discussions across teams using Node.js, JavaScript, and TypeScript
Designed scalable backend solutions and contributed to system architecture for distributed applications
Conducted design reviews and code reviews, improving system performance and maintainability
Mentored engineers and drove refactoring initiatives to keep systems efficient and scalable
Monitored system performance and reliability using observability tools (Prometheus, Grafana)

Education

MS in Information Security and Databases

Mordovian State University named after N.P. Ogarev, Saransk

2003 - 2008

Courses

React.js

LoftSchool

Skills

Node.js, Fastify, NestJS, JavaScript/Typescript, High-load system design, Microservices architecture, Kafka / NATS (event-driven systems), REST / GraphQL API development, Performance optimization & caching (Redis), MySQL / MongoDB (query optimization, indexing), Docker / Kubernetes, AWS / Cloud infrastructure, WebSockets / real-time systems

Languages

English - B2
Russian - native

Job Description

Vacancy

CoreStar

CoreStar is a dynamic technology company supporting partners in heavy-load industries with high-performance solutions. Our expert teams bring a startup-driven mindset, focusing on innovation, collaboration, and efficiency in every project.

Company

CoreStar

Responsibilities

Develop scalable backend systems
Build robust APIs and microservices
Optimize application performance
Design and implement third-party integrations
Develop from concept to production
Ensure code quality and maintainability
Monitor and troubleshoot production systems
Collaborate with cross-functional teams
Stay current with technology trends

Must-have requirements

5+ years of professional software development experience
4+ years of hands-on Node.js development
3+ years of experience with high-load systems
Proven track record of performance optimization

Nice-to-have requirements

Strong English communication skills
Performance-focused mindset
Problem-solving expertise

Benefits

24 working days of paid annual leave
6 days of paid sick leave
Official employment
Medical insurance
Coffee zone with fruit & snacks
Corporate Lunch
Gym and sports classes
Healthy and friendly work atmosphere
Greek and English language classes

Tech stack

JavaScript

TypeScript

Node.js

Express.js

Fastify

RESTful services

GraphQL

WebSocket

MySQL

MongoDB

Redis

Apache Kafka

NATS

Prometheus

Grafana

ELK stack

Docker

Kubernetes

AWS

Azure

Languages

English

Fit Analysis

Warnings

The vacancy lacks specific details on location, remote policy, and seniority, which limits the precision of the analysis.

Section breakdown

Summary

18/22Counted

The summary strongly aligns with the vacancy, covering most must-have requirements such as Node.js, high-load systems, and performance optimization.

Supporting evidence

Senior Backend Developer with 7+ years of experience building scalable high-load systems using Node.js, JavaScript, and TypeScript.
Strong focus on performance optimization, database efficiency (MySQL, MongoDB, ClickHouse), and system reliability.

Missing evidence

Specific mention of Express.js or Azure.

Improvement hint

Include more specific technologies like Express.js and Azure to enhance alignment.

Skills and ATS

15/18Counted

The skills section covers most of the critical technologies required by the vacancy, such as Node.js, Fastify, REST/GraphQL, and Docker/Kubernetes.

Supporting evidence

Node.js
Fastify
REST / GraphQL API development
Docker / Kubernetes

Missing evidence

Express.js
Azure

Improvement hint

Add missing technologies like Express.js and Azure to improve ATS visibility.

Experience

24/28Counted

The candidate's experience strongly supports the vacancy requirements, with recent roles demonstrating expertise in Node.js, high-load systems, and performance optimization.

Supporting evidence

Designed and developed high-load backend services using Node.js (NestJS) and TypeScript in a microservices architecture.
Optimized performance using Redis caching, efficient DB queries, and Node.js runtime-level optimizations.

Missing evidence

Specific experience with Express.js.

Improvement hint

Highlight any experience with Express.js to fully meet the tech stack requirements.

Education

ExcludedExcluded

Education is not explicitly required by the vacancy.

Language and location

ExcludedExcluded

The vacancy does not specify language or location requirements beyond English, which is covered.

Contact readiness

6/7Counted

The resume includes both email and phone, with a clear target role and location.

Supporting evidence

Email: randomuser@example.com
Phone: +35796264672

Improvement hint

Ensure all contact details are up-to-date and clearly visible.

Nice-to-have bonus

3/5Counted

The candidate demonstrates a performance-focused mindset and problem-solving expertise, aligning with nice-to-have requirements.

Supporting evidence

Strong focus on performance optimization
Led system design decisions, including data modeling

Missing evidence

Explicit mention of strong English communication skills.

Improvement hint

Highlight English communication skills to maximize nice-to-have alignment.

Strengths

Extensive experience with Node.js and high-load systems.
Strong focus on performance optimization.

Risks

Lack of explicit experience with Express.js and Azure.

Must-have requirements

5+ years of professional software development experience

Exact

Score impact: 100/100

The candidate has over 7 years of relevant experience, meeting the requirement.

Senior Backend Developer with 7+ years of experience
7+ years of experience building scalable high-load systems

4+ years of hands-on Node.js development

Exact

Score impact: 100/100

Node.js is a core skill throughout the candidate's experience.

Node.js
7+ years of experience building scalable high-load systems using Node.js

3+ years of experience with high-load systems

Exact

Score impact: 100/100

The candidate has extensive experience with high-load systems.

7+ years of experience building scalable high-load systems
Designed and developed high-load backend services

Proven track record of performance optimization

Exact

Score impact: 100/100

Performance optimization is a key focus in the candidate's roles.

Strong focus on performance optimization
Optimized performance using Redis caching

Nice-to-have requirements

Strong English communication skills

Weak

Score impact: 50/100

The candidate's English level is B2, which is adequate but not explicitly strong.

English level B2

Performance-focused mindset

Exact

Score impact: 100/100

The candidate consistently demonstrates a performance-focused mindset.

Strong focus on performance optimization
Optimized performance using Redis caching

Problem-solving expertise

Strong

Score impact: 75/100

The candidate has shown problem-solving skills in various roles.

Resolved bottlenecks and ensured high availability
Led system design decisions

Recommendations

Include specific technologies like Express.js and Azure in the summary.

Medium

Section: summaries

Score impact: +5

To improve alignment with the vacancy's tech stack requirements.

Highlight strong English communication skills if applicable.

Low

Section: languages

Score impact: +2

To fully meet the nice-to-have requirements.

Scoring notes

The resume strongly aligns with the vacancy's must-have requirements, but lacks some specific technologies in the tech stack.