Jobs

Cowchain blockchain development company is actively looking for Backend Developer to join our development team.

About us:
Cowchain have successfully completed 120+ projects mainly on EVM-based blockchains such as Ethereum, Polygon, Arbitrum, Base including Coinmarketcap leaders with 180M+ total capitalization and 20M+ daily trading volume in Move2Earn, Play2Earn and DeFi industries.
 
Required skills:
— 1+ year of commercial experience specifically in Web3/blockchain development
— 2+ years of experience in back-end development overall
— Node.js, Nest.js
— MSSQL, MySQL, PostgreSQL
— RabbitMQ, Redis Cache, BullMQ
— JIRA, Gitflow
— Hands-on experience with EVM-based blockchains (Ethereum, Polygon, BSC, etc.)
— Solid understanding of EVM architecture and smart contracts (Solidity)
 
Tech stack:
— Node.js, Express, Nest.js, Microservices, Reddis, RabbitMQ;
— MYSQL, MSSQL, PostgreSQL;
— TheGraph (Subgraph), Moralis, Alchemy, Infura, Event indexing back-end;
— Azure, AWS, Google Cloud;
— Docker, Kubernetes.

What will you do:
— New features development;
— Bugfixes and support existing solutions;
— Participate in project architecture discussions;
— Build solutions from scratch as well as join on-going development process;
— Have fun)

Will be a huge plus:
— Web3/Ethers libraries;
— React development experience;
— Experience with DEX/CEX integration (Uniswap, PancakeSwap, Binance API);
— Solidity / Hardhat / Foundry.

What we offer:
— Flexible working schedule, remote work;
— Competitive salary with bonuses for activities;
— Ability to dive into fast-growing blockchain/crypto industry;
— Work with modern tech stack (blockchain);
— Paid vacations, sick leaves;
— 100% friendly/family team.
 

Role: Senior Backend Software Engineer (Node.js)
Location: Poland (remote/flexible, details upon request)
Project: Long-term development of a modern internal product for a fast-growing tech company. Scalable platform, microservices, cutting-edge stack, collaborative agile environment.

Requirements:
– 4+ years of hands-on experience with TypeScript and Node.js
– Practical experience with Nest.js
– Strong understanding of backend architecture and modern web development
– Proficiency in asynchronous programming and event-driven architecture
– Proven background with microservices and distributed systems
– Agile mindset and passion for fast, high-quality delivery
– English: Upper-Intermediate+

Nice to have:
– Experience in remote/distributed teams
– Familiarity with DevOps practices or CI/CD pipelines
– Knowledge of AWS infrastructure

Responsibilities:
– Design and implement robust backend services using TypeScript and Node.js
– Develop distributed systems within a microservices architecture
– Collaborate with cross-functional teams to deliver quality solutions
– Contribute to architectural decisions and improve engineering practices
– Write clean, modular, and testable code following modern standards

Format: Long-term, full-time, remote
Start: ASAP

Looking forward to your replies. 

Cowchain blockchain development company is actively looking for Backend Developer to join our development team.

About us:
Cowchain have successfully completed 120+ projects mainly on EVM-based blockchains such as Ethereum, Polygon, Arbitrum, Base including Coinmarketcap leaders with 180M+ total capitalization and 20M+ daily trading volume in Move2Earn, Play2Earn and DeFi industries.

Required skills:
— At least 3-year commercial experience in the Backend development
— Node.js experience is A MUST
— Ability to use Solscan to analyze data;
— Compiling, signing and sending transfer transactions;
— Compiling, signing and sending swap transactions;
— Transaction mult-signatures
— Pump.fun / Jupiter / Raydium;
— Bignumber.js / bn.js
— Understanding of gas, priority fee, token account creation
— Meme-coin creation Pump.fum/Meteora
— JIRA, gitflow

Tech stack:
— Node.js, Nest.js, Microservices
— MYSQL, MSSQL, PostgreSQL
— TheGraph (Subgraph), Event indexing back-end
— Azure, AWS, Google Cloud
— Docker, Kubernetes

Will be a plus:
— EVM-based blockchains (Ethereum, Avalanche, Polygon, Binance Smart Chain, Velas, Hedera etc)

What will you do:
— New features development;
— Bugfixes and support existing solutions;
— Participate in project architecture discussions;
— Build solutions from scratch as well as join on-going development process;
— Have fun)

What we offer:
— Flexible working schedule, remote work;
— Competitive salary with bonuses for activities;
— Ability to dive into fast-growing blockchain/crypto industry;
— Work with modern tech stack (blockchain);
— Paid vacations, sick leaves;
— 100% friendly/family team.

Join us at Provectus as part of a team dedicated to building cutting-edge technology solutions that have a positive impact on society. Our company specializes in AI and ML technologies, cloud services, and data engineering, and we take pride in our ability to innovate and push the boundaries of what's possible.

We are seeking a talented and versatile Full-Stack Engineer with strong experience in Next.js to join our innovative team.

Requirements:

• 5+ years of experience in front-end development;
• Production experience with Next.js v13+ (App Router, Server Actions);
• Experience with Nest.js;
• Solid knowledge of TypeScript;
• Solid understanding of relational and non-relational databases (Aurora, DynamoDB);
• Familiarity with ChakraUI or similar UI Component Libraries;
• Proficiency in writing unit and integration tests;
• Full application lifecycle experience;
• Excellent communication and collaboration skills;
• Understanding of design patterns and software architectures;
• Experience with cloud services, preferably AWS Cloud;
• Proficiency with GIT for version control.

Preferred Qualifications:

• Experience with AWS services;
• Experience setting up CI/CD pipelines;
• Understanding of testing principles and experience with testing tools.

Responsibilities:

• Write well-designed, testable, efficient code by using best software development practices;
• Work closely, collaboratively, and creatively with product owners to build a user experience to support the business users' needs;
• Work well in a team environment of 4 - 5 developers, but taking individual ownership of deliverables and ensuring quality through comprehensive unit tests;
• Code optimization and performance with best practices in Javascript;
• Create a user interface by using standard HTML/CSS practices;
• Gather and refine specifications and requirements based on technical needs;
• Ensure cross-browser capability of code and HTML markup;
• Create and maintain software documentation;
• Stay tuned with the recent Web technologies.

Seniority Level: Senior
Language Requirements: Upper-Intermediate English
Employment Type: Full-time
Location: EU, Ukraine, Georgia
Time Zone: EU working hours
Start Date: ASAP
Duration: Long-term

About the Client:
Our client is building a unified platform that simplifies global travel by integrating transportation options—trains, buses, ferries, and flights—into one seamless booking system. Operating across Europe, the US, and Canada, the platform provides users with transparent pricing, flexible search, and a smooth booking experience.

With over 1000 transport partners in 39 countries, the company serves a global customer base and operates from multiple international offices. The team is a large and diverse group of professionals working together to make travel easier and more accessible for everyone.

About the Project:
You will join the Core Platform team, focused on enhancing the product experience for users worldwide. This team delivers solutions like in-platform hotel booking through an integration with a third-party API—supporting inventory, room selection, payment, and booking management.

The team is data-driven, highly collaborative with stakeholders, and operates in active development mode.

Tech Stack & Must-Have Skills:

• Languages & Frameworks: TypeScript, Node.js, React.js, ES6
• API: REST, GraphQL
• Styling: Styled Components
• Testing: Jest, Cypress
• DevOps & Tools: Docker, Kubernetes, GitHub, Jenkins

Responsibilities:

• Develop scalable, high-performance solutions using modern technologies
• Contribute to product improvements by running experiments and iterating based on user data
• Explore and evaluate new tools, languages, and frameworks to continuously drive innovation
• Collaborate with your team and stakeholders to ensure the product evolves meaningfully
• Help define and share engineering best practices across teams
• Automate processes and support architectural decision-making

Technology Focus: Node.js (Backend Core)

Required Skills:

5+ years of experience in Node.js backend development.
Proficiency in TypeScript.
Strong understanding of asynchronous programming.
Experience with Express.js.
Knowledge of RESTful APIs and WebSockets.
Experience with SQL databases (PostgreSQL, MySQL).
Experience with scalable and high-performance applications.
Strong knowledge of Git and version control best practices.

We are a rapidly growing startup building an advanced management and analytics platform for companies operating on fan platforms such as OnlyFans, Fansly, and others.

Our platform helps businesses efficiently manage large numbers of accounts and teams, offering powerful tools for operational optimization and revenue growth.

At the core of our system are powerful automation workflows, advanced data collection, and actionable insights that help our users optimize their operations.
 

The Role

We’re looking for an experienced backend engineer to take a leading role in this project. You’ll be responsible for designing system architecture, hands-on coding, and driving technical decisions.

What You’ll Do:

• Lead the development of the statistics subsystem, focusing on analytics and reporting.
• Design and implement microservices to automate key processes for our users.
• Build and maintain high-performance databases like ClickHouse, TimescaleDB and other specialized tools to handle large-scale data and optimize analytics flow.
• Work with large volumes of events and data streams, ensuring optimal performance and reliability.
• Collaborate with cross-functional teams to ensure seamless integration of automation and statistics features.
• Continuously optimize existing systems for performance, scalability, and reliability.

Your Expertise:

• Strong experience with Node.js, focused on backend development and building scalable, high-load systems.
• Experience with high-load databases such as ClickHouse, TimescaleDB, DynamoDB, Spark, and Cassandra, to handle and process large volumes of data efficiently.
• Expertise in real-time data processing, with a focus on streaming analytics and optimizing performance.
• Experience designing and implementing microservices, ensuring high availability, fault tolerance, and scalability.
• Strong knowledge of performance optimization for low-latency systems that can handle large-scale data processing.
• Solid understanding of cloud platforms (AWS, GCP, etc.) and containerization technologies (Docker, Kubernetes) for scalable deployments.
• Excellent problem-solving skills, with the ability to design efficient solutions for high-traffic data processing.
• Familiarity with event busses and message queues (e.g., Kafka, RabbitMQ, SQS) for real-time data processing.

It is a high-growth SaaS company selling IT Service Management, a space that is being propelled into high growth as businesses worldwide accelerate their digital transformation and start to adopt new workstyles for their employees.

We have over 4,000 customers in 140 countries. We are deployed in 42 different languages and used daily by over 100,000 system administrators. Our software impacts the daily working lives of over 9 million end users.

We’re looking for a Senior Developer to join our mission. If you’re passionate about building impactful products, love working with cutting-edge AI technologies, and want to help push the boundaries of what’s possible.
 

Responsibilities:

• Lead the development and maintenance of a high-quality software product.
• Design and implement effective APIs and algorithms to support AI-driven features.
• Collaborate with AI, machine learning, and data science teams to push technological boundaries.
• Mentor and guide developers, fostering growth and knowledge sharing
• Work closely with product and design teams to deliver impactful solutions
• Participate actively in agile workflows, ensuring rapid and reliable delivery

What We’re Looking For:

• 5+ years of hands-on experience in backend development with Node.js, JavaScript, and TypeScript
• Strong expertise with SQL databases, especially MySQL
• Familiarity with AI, machine learning, data science, or full-stack development is a plus
• Excellent problem-solving skills and ability to thrive in a dynamic, AI-centric environment
• Strong communication skills and a collaborative mindset
• Experience working in agile, fast-paced teams

• Freely Spoken English

   

What we offer:

• 20 working days’ vacation; 
• 10 paid sick leaves;
• 4 wellness days;
• public holidays;
• equipment;
• paid lunches;
• gym compensation;

• Many cool team activities.

   

Why Join Us?

You’ll work at the forefront of AI innovation, building products that impact millions globally. We offer a supportive, growth-focused environment where your ideas matter and your skills will flourish. If you’re ready to take your career to the next level and help shape the future of AI-driven service management, we want to hear from you.

FAVBET Tech develops software that is used by millions of players around the world for the international company FAVBET Entertainment.
We develop innovations in the field of gambling and betting through a complex multi-component platform which is capable to withstand enormous loads and provide a unique experience for players.
FAVBET Tech does not organize and conduct gambling on its platform. Its main focus is software development.

Main areas of work:

• Betting/Gambling Platform Software Development — software development that is easy to use and personalized for each customer;
• Highload Development — development of highly loaded services and systems;
• CRM System Development — development of a number of services to ensure a high level of customer service, effective engagement of new customers and retention of existing ones;
• Big Data — development of complex systems for processing and analysis of big data;
• Cloud Services — we use cloud technologies for scaling and business efficiency.

Requirements:

• 4+ years of commercial experience in Node.js (Fastify/Koa/NestJS would be a +).
•    Strong skills in relational and NoSQL databases (PostgreSQL, MySQL, Redis, MongoDB).
•    Strong expertise in TypeScript.
•    Experience with CDN implementation and performance optimization
•    Unit/integration/load tests
•    Understanding of design patterns, clean architecture.

•    Proven track record in developing scalable, enterprise-level solutions

   

  Responsibilities :

•   Implementation of API migration to a new approach
•    Development of new features and new parts of the services
•    Handling complex problems that might arise during solution development and provide field support with creative and rapid solutions  
•    Constantly improving code organization and evolving application design
•    Writing new and updating existing integration tests

We offer:

• 30 days off per year (vacation and sick days) — we value rest and recreation. We also comply with the national holidays.
• Medical insurance for employees and the possibility of training employees at the expense of the company and gym membership.
• Remote work; after Ukraine wins the war — our own modern lofty office with spacious workplace, and brand-new work equipment (near Pochaina metro station).
• Flexible work schedule — we expect a full-time commitment but do not track your working hours.
• Flat hierarchy without micromanagement — our doors are open, and all teammates are approachable.

During the war, the company actively supports the Ministry of Digital Transformation of Ukraine in the initiative to deploy an IT army and has already organized its own cyber warfare unit, which makes a crushing blow to the enemy’s IT infrastructure 24/7, coordinates with other cyber volunteers and plans offensive actions on its IT front line.

About the Project

We’re seeking a seasoned JavaScript/TypeScript Developer with a strong sense of ownership and maturity in evaluating and improving existing codebases. This role goes beyond pure coding—we want a pragmatic problem-solver who can challenge assumptions, push for technical consistency, and elevate engineering standards across services.

You’ll be part of a remote-first team primarily based in Ukraine, working closely with our Israeli counterparts. We operate in a microservices-oriented environment with cross-functional collaboration at its core. You’ll engage regularly with the Full Stack, Research (Data Science & Engineering), and Product Owner teams to help turn ideas into production-ready services.

We value soft skills as much as technical ones. You should be a proactive communicator, capable of aligning with non-engineering peers, asking the right questions, and pushing back when things need clarification.

This is an AI-first organization—we expect our engineers to leverage AI tools regularly to boost productivity, code quality, and development velocity.

Required skills:

Must-Have

• 5+ years of hands-on experience with JavaScript/TypeScript, including both frontend and backend development.
• Strong production experience with Node.js.
• Working knowledge of another backend language, preferably Python
• Solid understanding of modern web architecture and experience building scalable systems.
• Experience with cloud environments (preferably AWS).
• Proficiency with microservices architecture and service-to-service communication.
• Strong command of SQL and NoSQL databases, including MongoDB, Amazon DocumentDB, and SingleStore.
• Advanced English communication skills (both verbal and written).

Nice to Have

• Familiarity with React and modern frontend development practices.
• Familiarity with GraphQL APIs.
• Exposure to technologies such as Redis, Elasticsearch, and Kafka.
• Experience with CI/CD pipelines (e.g., Jenkins, GitHub Actions).

About the Company

Established in 2004, ALLSTARSIT was founded with a clear vision: to enhance the landscape of global IT employment by bridging the gap between companies and skilled professionals. The core belief was that assembling a team shouldn't be hindered by geographical constraints. Fast forward to the present day, ALLSTARSIT stands as an international outstaffing service provider committed to change the way businesses recruit, compensate, and oversee top talent worldwide.

Job Title
Full Stack Engineer (TypeScript / Node.js / React)
 

About Upfirst
Upfirst streamlines how small and medium-sized businesses handle calls, appointments, and inquiries using AI. Founded by entrepreneurs with deep SMB experience, we’re fully distributed and use LLM-driven solutions to replace repetitive tasks with more efficient, AI-powered operations.
 

Responsibilities

• Design, build, and maintain full-stack features using TypeScript, Node.js, and React
• Develop and optimize RESTful and event-driven APIs using Google Pub/Sub or similar
• Implement clean, responsive UIs using React and Tailwind CSS
• Deploy and manage services in Google Cloud Platform (GCP) with Docker and Load Balancing
• Maintain and evolve CI/CD workflows using Terraform (CDK) and GitHub Actions
• Integrate AI and telephony capabilities with OpenAI, text-to-speech, speech-to-text, and Twilio
   

Requirements

• Proven experience with TypeScript, Node.js, and React in production environments
• Strong understanding of microservices and event-driven architecture
• Experience with modern front-end tools and frameworks (React, Tailwind, Next.js a plus)
• Strong collaboration and communication skills for a fully remote environment
• Bonus: Familiarity with Docker, Terraform, AI/LLMs, telephony APIs like Twilio
   

What We Offer

• Competitive salary (and equity for the right individual)
• Fully remote and flexible work culture
• High ownership and direct influence on product direction
• A fast-moving, focused team that values action and innovation
   

How to Apply
Send your resume, a brief intro, and links to relevant projects or GitHub repos. We look forward to hearing from you!

Senior Back-End / DevOps Engineer (Staff level) – Build the Core of the HTV Platform

High Ticket Ventures — Remote-first (work from anywhere, Gulf Standard Time)
 

Why this matters
 

We’re not adding another API to the noise. We’re wiring a fully serverless, multi-tenant platform that takes a founder from first application to exit. Your work keeps thousands of PortCos humming – databases resilient, deploys boring, SLOs green.
 

The problem space you’ll own

• apply.highticketventures.com – low-latency scoring APIs that rank thousands of founder applications per batch.
• onboarding.highticketventures.com – bank-grade KYC micro-services (Stripe Identity, Veremark) with airtight PII boundaries.
• app.highticketventures.com – high-fan-out GraphQL / tRPC back end delivering KPIs, task queues, chat, and scheduled sweeps.
• talent & invest services (post-MVP) – event-driven workloads handling hiring funnels and investor data rooms.
• accounts.highticketventures.com – single Firebase Auth tenant exposed through secure OIDC proxy.
   

Every request runs through Cloud Run behind global load balancers; every secret lives in GCP Secret Manager; every trace ends in BigQuery for 365-day retention.
 

What you’ll build and automate

• Design and maintain Cloud SQL (Postgres 15) with row-level security, read replicas, automated PITR.
• Own Prisma schemas, migrations, and data-access patterns (no unindexed scans).
• Author event-driven pipelines: Pub/Sub ➜ Cloud Functions / Cloud Run jobs ➜ BigQuery.
• Write Terraform modules (with Terragrunt) that stamp out new stacks in minutes.
• Harden CI/CD: Cloud Build pipelines with SLSA provenance, Trivy/Snyk scans, blue-green deploys, automated rollbacks.
• Wire observability: OpenTelemetry traces, Cloud Logging sinks to BigQuery, Alerting → PagerDuty.
• Implement fine-grained IAM and Workload Identity; zero plaintext keys in containers.
• Pair with front-end lead to expose tRPC / GraphQL endpoints with request quotas and caching hints.
   

Must-have experience

• 5 + years shipping production SaaS back ends (multi-tenant, 10 k + MAU).
• Postgres wizardry: schema design, EXPLAIN-analyse, partitioning, logical replication.
• Solid Go or TypeScript/Node on server side; comfortable with Cloud Run or AWS Fargate/Lambda.
• Proven DevOps discipline: IaC first (Terraform or CDK), blue-green, canary, incident runbooks.
• Deep CI/CD knowledge – GitHub Actions or Cloud Build YAML, cache tuning, artefact signing.
• Security rigor: OAuth/OIDC, 2FA, key rotation, GDPR/SOC-2 controls.
   

Nice-to-have (or learn on the job)

• EventArc, Cloud Scheduler, Cloud Tasks patterns.
• BigQuery ML or Vertex AI experience for scoring models.
• Fintech / KYC compliance quirks.
• Mentoring small teams, writing ADRs that age well.
   

Hiring flow

1. 15-minute founder chat – culture and expectations.
2. 60–90 min technical deep-dive – you screen-share past architecture, discuss outages.
3. Paid “slice” task – small vertical of HTV (API + Terraform). We pay your time.
4. Offer – contract-to-hire, three-month contract ➜ convert to FTE on mutual fit.
    

Compensation & upside

• Competitive base in USD.
• Performance bonus tied directly to PortCo cash-flow (Founders Fund).
• Remote flexibility; two company-paid trips to Dubai per year for onsites.
   

Six-month success snapshot

• Zero-downtime blue-green deploys across six sub-domains.
• p99 API latency < 300 ms, error budget < 0.1 %.
• Multi-tenant RLS in Postgres; no PortCo can read another’s data.
• One-command environment spin-up (terraform apply) for new staging stacks.
• Audit log evidence ready for SOC-2 at any moment.
   

Ready to make infra that can run 5 000 startups without flinching?
apply with

• GitHub / portfolio link.
• One paragraph on the hardest scaling or reliability issue you’ve solved.
• (Optional) Any incident post-mortem or architecture doc you’re proud of.
   

Let’s build the backbone of the next generation of startups.

Remote | Part of a lean, fast-moving team | Influencer-backed project with 10k+ users

We’re building a crypto auto-trading platform led by a team of well-known influencers with a highly engaged audience. The product enables users to set up simple spot-trading strategies — bots do the rest. It’s low-risk, long-term, high-frequency trading with solid potential.

Now we’re looking for a Senior Node.js Developer to take technical ownership of the backend and help bring the MVP to life.

🔧 Your Profile

• 5+ years of hands-on experience with Node.js
• Strong with TypeScript, REST APIs, and WebSockets
• Comfortable building scalable, real-time systems
• Write clean, efficient, and maintainable code
• Experience with trading systems, crypto, or chatbots is a big plus
• Passion for simple, elegant backend architecture

✅ What You’ll Get

• Full autonomy over the backend architecture
• Support from a part-time architect 
• Product with real market fit and 10k+ users from day one
• Compact, fast, decision-making team — no corporate fluff

About the Role

We are seeking a talented and experienced Senior Node.js Developer to join our growing team. In this role, you will lead the backend development of scalable web applications and APIs, contribute to architecture decisions, and mentor junior developers. You should have a deep understanding of server-side JavaScript and a strong grasp of modern web development practices.

Key Responsibilities

• Design, develop, and maintain backend services and APIs using Node.js.
• Collaborate with front-end developers, DevOps, and product teams to deliver high-quality features.
• Optimize application performance and scalability.
• Write clean, efficient, and well-documented code.
• Participate in code reviews and provide mentorship to junior developers.
• Ensure best practices in security and data protection are followed.

• Stay current with emerging technologies and development trends.

   

Requirements

• 4+ years of professional experience in Node.js development.
• Strong knowledge of JavaScript (ES6+), asynchronous programming, and RESTful API design.
• Experience with frameworks such as Express.js or NestJS.
• Proficiency in working with databases (SQL and NoSQL).
• Familiarity with Git, CI/CD pipelines, and cloud platforms (AWS, GCP, or Azure).
• Solid understanding of software engineering principles and Agile methodologies.

• Strong communication and teamwork skills.

   

Nice to Have

• Experience with TypeScript.
• Knowledge of GraphQL, WebSockets, or Microservices architecture.
• Familiarity with Docker and container orchestration (e.g., Kubernetes).

Benefits

• Competitive salary and performance bonuses.
• Flexible working hours and remote options.
• Professional development and learning opportunities.
• Collaborative and inclusive team culture.

For our German client, a company from the consumer goods industry, we are looking for a Senior Developer from 01.10.2025 to provide the following services.

Tasks:

• Making design decisions,
• Ensures code quality
• Solving complex issues
• Unit Testing/Integration Testing and Debugging
• Implementing new features

Qualifications:

• Excellent Knowledge in working with JavaScript/TypeScript
• Deep Experience with Node.js, Express.js (or similar frameworks)
• Profund Knowledge within Database Management (SQL and NoSQL)
• Experienced in REST API Integration
• Knowledge in Authentication/Authorization (JWT, OAuth, session management.) as well as Structured logging, Exception and timeout handling
• Understanding of Docker, containers
• CI/CD Awareness, as well as Jira & Confluence