Senior Frontend Developer
Status
Saint Petersburg, Russia
Full time
Remote
4,166.67
Monthly
50,000
Annual
Payment in Crypto
Role
Frontend Engineer
Work Experience
More than 3 years
Description
We are looking for a skilled react.js developer to join our front-end development team. In this role, you will be responsible for developing and implementing user interface components using React.js concepts and workflows. You will also be responsible for profiling and improving front-end performance.
You will coordinate with the rest of the team working on different layers of the infrastructure.
Responsibilities:
• Meeting with the development team to discuss user interface ideas and applications.
• Developing new user-facing features using React.js
• Building reusable components and front-end libraries for future use
• Troubleshooting interface software and debugging application codes.
• Monitoring and improving front-end performance.
Requirements:
• Previous experience working as a react.js developer.
• In-depth knowledge of JavaScript, CSS and HTML.
• Thorough understanding of React.js and its core principles.
• Experience with browser-based debugging and performance testing software.
• Excellent troubleshooting skills.
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools
Skills Required
Cerberus LLC
Website
Not specified
Company size
Not specified
Location
Not specified
Description
Not specified
Status
Lumixion
DApp & Smart Contract Developer (Vesting Platform)
Full time
Remote
We are looking for a skilled DApp & Smart Contract Developer to enhance and stabilize our client’s crypto vesting platform. You will diagnose existing issues, improve performance, deliver new features, and ensure seamless coordination between smart contracts and the front end.
This role is ideal for someone who thrives in fast-moving environments, values clean and secure code, and understands the nuances of blockchain-based application architecture.
Responsibilities
Diagnose and resolve issues in vesting smart contracts and their front-end integrations.
Implement new features and system enhancements to improve UX and overall platform performance.
Maintain smooth interaction between the web interface and deployed smart contracts.
Conduct testing, audits, and deployments across testnet and mainnet environments.
Optimize contract logic for performance, security, and gas efficiency.
Collaborate with our engineering team to identify pain points and deliver stable, secure solutions.
Requirements
Proven experience building full-stack decentralized applications.
Strong proficiency in Solidity, JavaScript/TypeScript, and modern frameworks (Angular, React, or Vue).
Hands-on experience with Hardhat or Foundry for smart contract development and testing.
Familiarity with Ethers.js or Web3.js for blockchain interaction layers.
Solid understanding of Ethereum, Polygon, or other EVM-compatible chains.
Experience integrating wallets such as MetaMask and managing on-chain/off-chain data flows.
Strong debugging skills, attention to detail, and a security-first mindset.
Nice to Have
Experience with smart contract security audits and gas optimization techniques.
Knowledge of Node.js-based backend services or API integration layers.
Previous experience with vesting, staking, or token distribution mechanisms.
Project Scope
This role supports a short-to-mid-term initiative focused on stabilizing and enhancing an existing crypto vesting platform. High-performing developers may have opportunities for ongoing collaboration across additional blockchain and product engineering projects.
Hiring Process
Technical Assessment - Selected candidates will complete a short, clearly scoped technical exercises designed solely to evaluate coding approach and smart contract knowledge.
CTO interview - A final discussion to evaluate technical reasoning, architectural thinking, and team fit. Successful candidates may receive an offer through Contra following this conversation.
This role is ideal for someone who thrives in fast-moving environments, values clean and secure code, and understands the nuances of blockchain-based application architecture.
Responsibilities
Diagnose and resolve issues in vesting smart contracts and their front-end integrations.
Implement new features and system enhancements to improve UX and overall platform performance.
Maintain smooth interaction between the web interface and deployed smart contracts.
Conduct testing, audits, and deployments across testnet and mainnet environments.
Optimize contract logic for performance, security, and gas efficiency.
Collaborate with our engineering team to identify pain points and deliver stable, secure solutions.
Requirements
Proven experience building full-stack decentralized applications.
Strong proficiency in Solidity, JavaScript/TypeScript, and modern frameworks (Angular, React, or Vue).
Hands-on experience with Hardhat or Foundry for smart contract development and testing.
Familiarity with Ethers.js or Web3.js for blockchain interaction layers.
Solid understanding of Ethereum, Polygon, or other EVM-compatible chains.
Experience integrating wallets such as MetaMask and managing on-chain/off-chain data flows.
Strong debugging skills, attention to detail, and a security-first mindset.
Nice to Have
Experience with smart contract security audits and gas optimization techniques.
Knowledge of Node.js-based backend services or API integration layers.
Previous experience with vesting, staking, or token distribution mechanisms.
Project Scope
This role supports a short-to-mid-term initiative focused on stabilizing and enhancing an existing crypto vesting platform. High-performing developers may have opportunities for ongoing collaboration across additional blockchain and product engineering projects.
Hiring Process
Technical Assessment - Selected candidates will complete a short, clearly scoped technical exercises designed solely to evaluate coding approach and smart contract knowledge.
CTO interview - A final discussion to evaluate technical reasoning, architectural thinking, and team fit. Successful candidates may receive an offer through Contra following this conversation.
Payment in Crypto
Rui Silva
Senior Blockchain Developer - Ethereum/PulseChain - GAM3S.GG
Lisbon, Portugal
Lisbon, Portugal
Full time
Remote
About the Job
We're looking for a Senior Blockchain Developer with strong Ethereum/PulseChain smart contract experience to work on our DeFi/GameFi platform. You'll be building and maintaining betting contracts, yield farming mechanisms, token swap systems, and Web3 frontend integrations for our decentralized application on PulseChain.
Key Responsibilities
Smart Contract Development
System Architecture & Integration
Frontend Web3 Integration
Security & Compliance
Performance & Monitoring
Required Technical Skills
Blockchain Expertise
Frontend Web3 Development
Development Tools
Integration & Tools
We're looking for a Senior Blockchain Developer with strong Ethereum/PulseChain smart contract experience to work on our DeFi/GameFi platform. You'll be building and maintaining betting contracts, yield farming mechanisms, token swap systems, and Web3 frontend integrations for our decentralized application on PulseChain.
Key Responsibilities
Smart Contract Development
System Architecture & Integration
Frontend Web3 Integration
Security & Compliance
Performance & Monitoring
Required Technical Skills
Blockchain Expertise
Frontend Web3 Development
Development Tools
Integration & Tools
Payment in Crypto
Adan Cooper
Looking for early stage members
Belgrade, Serbia
Belgrade, Serbia
Full time
Remote
Hey everyone
I’m the solo founder of SteadyStake, an automated DCA crypto savings app built on Base. MVP is done and we’re getting ready for mainnet. I’m looking for 1–2 early team members:
Marketing / Growth (Web3, community, content, GTM)
Partnerships / Account Manager (DeFi & ecosystem deals) Comp is equity + revenue share (no salary, early stage). If you’re someone who wants real ownership and to help build from the ground up, feel free to DM me
I’m the solo founder of SteadyStake, an automated DCA crypto savings app built on Base. MVP is done and we’re getting ready for mainnet. I’m looking for 1–2 early team members:
Marketing / Growth (Web3, community, content, GTM)
Partnerships / Account Manager (DeFi & ecosystem deals) Comp is equity + revenue share (no salary, early stage). If you’re someone who wants real ownership and to help build from the ground up, feel free to DM me
Payment in Crypto
Tatyana Khrustaleva
Growth Manager
Almaty, Kazakhstan
Almaty, Kazakhstan
Full time
Office
Growth Manager
Why work at Higgsfield AI?
🧩 Higgsfield AI is one of the fastest-growing GenAI startups in the world — top-1 globally by growth, #1 Video AI in the U.S.
Our users already include Elon Musk, Madonna, Snoop Dogg, and Will Smith. In just 8 weeks we shipped 12 releases, reached 11M users and generated over 1.2B social impressions.
We just raised $50M Series A to scale even faster. This is your chance to join early — when the team is still small but strong — and make your mark on the next GenAI decacorn.
What Growth Means at Higgsfield
At Higgsfield, growth is about distribution and revenue, not branding or theory.
A Growth Manager here is a high-agency operator who:
Finds and unlocks scalable distribution channels
Moves fast with imperfect data
Automates anything repeatable
Negotiates deals that compound over time
Takes full ownership of outcomes
This is a hands-on execution role. You will build, test, break, fix, and scale.
What You Will Do
Creator & Partner Growth
Source, evaluate, and onboard creators who can drive high-quality users
Build and negotiate creator partnerships (affiliate, revenue share, performance-based deals)
Run creator campaigns end-to-end: outreach → deal → launch → optimization
Build long-term relationships with creators, not one-off placements
Prioritize volume with intent — not spam
Important:
You are not managing Higgsfield’s own YouTube or social channels.
Your job is growth through external creators and their audiences.
YouTube Growth (Primary Focus)
Own YouTube as a distribution channel through creator collaborations
Drive traffic and usage via creator-generated content
Measure success by output and impact, not vanity metrics
Primary KPI:
Number of new unique creator videos generated per month
Analytics & Decision-Making
Build simple but effective models in Excel / Google Sheets
Estimate traffic, conversions, and revenue impact
Decide which creators, formats, and deals to scale or cut
Turn messy, incomplete data into clear execution decisions
Automation & Scale
Automate creator discovery, outreach, tracking, and reporting.
Build lightweight systems using tools like Sheets, Zapier, Apify, Instantly, CRMs, APIs, or scripts.
Reduce manual work and increase throughput.
Execution & Experimentation
Run fast experiments across platforms (YouTube, TikTok, Instagram, X).
Test formats, incentives, and deal structures.
Learn quickly and iterate.
There is no separation between “creative” and “technical.” One person owns the full cycle.
Who We’re Looking For
We’re looking for smart, high-energy— not perfect resumes.
You should have:
Strong English (spoken and written)
Strong communication and persuasion skills
Comfort working with numbers, spreadsheets, and assumptions
Ability to work independently without hand-holding
High agency, ownership mindset, and bias toward action
Emotional intelligence and confidence in negotiations
Willingness to operate in a fast-paced, high-intensity environment
Russian is required. English is required.
Backgrounds that often do well:
Growth, partnerships, or business development
Sales or performance-driven marketing
Early startup operators or founders
Engineering or computer science backgrounds
Consulting, analytics, or finance with strong execution bias
A technical background is a plus, not a requirement.
Level & Compensation
- All hires join formally at a junior level, regardless of prior experience
- Starting compensation is competitive and paid in USD
- Exceptional candidates with standout B2C or founding-level growth experience may be considered individually
Onboarding & Expectations
Onboarding lasts ~1 week
You receive a playbook and immediate ownership
Very little babysitting — autonomy is expected
From week two, you are expected to operate independently
This role requires high energy, fast thinking, and resilience.
Work Format
On-site only (Almaty office)
No remote or hybrid setup
Full immersion into the team and product is essential
This Role Is NOT a Fit If You:
Prefer strategy over execution
Avoid spreadsheets, metrics, or accountability
Need detailed step-by-step instructions
Are uncomfortable negotiating or pushing back
Expect predictable hours or a 9–5 schedule
Prefer low-intensity environments
Working Hours
This is a high-intensity role with a non-standard schedule.
Workdays: Monday–Saturday (6 days per week)
The working day is aligned with global creators and partners and includes late hours - from 2 pm till 2 am Almaty time.
Expect a high workload and a fast execution pace
This role is best suited for candidates who:
Are comfortable working evenings and nights
Can sustain focus in a high-output environment
Are motivated by speed, ownership, and impact rather than fixed hours
This is not a 9–5 role, and the schedule should be considered carefully before applying.
Relocation & Office Setup
This is a fully on-site role based in Almaty, Kazakhstan.
Remote or hybrid work is not available
Candidates must be willing to relocate and work from the office full-time
The company provides relocation support, including:
Assistance with travel to Almaty
Support during the initial relocation period
Help with legal and administrative setup as needed
Relocation is considered an integral part of the role, as close in-office collaboration is essential for speed, learning, and impact.
What We Offer
Full-time role. Please note: we will not consider candidates planning to combine this role with other jobs.
On-site role in Almaty office.
Long-term growth opportunity — we are looking for candidates interested in learning, growing, and building with the team. A minimum 1.5+ year commitment is expected.
Salary discussed during the interview process, paid in USD
Application deadline: ASAP
Steps:
Submit an application form and attach your CV
Zoom interview with a Hire5 Recruiter
Practical home task
Zoom interview with the founder
Get hired 🎉
Why work at Higgsfield AI?
🧩 Higgsfield AI is one of the fastest-growing GenAI startups in the world — top-1 globally by growth, #1 Video AI in the U.S.
Our users already include Elon Musk, Madonna, Snoop Dogg, and Will Smith. In just 8 weeks we shipped 12 releases, reached 11M users and generated over 1.2B social impressions.
We just raised $50M Series A to scale even faster. This is your chance to join early — when the team is still small but strong — and make your mark on the next GenAI decacorn.
What Growth Means at Higgsfield
At Higgsfield, growth is about distribution and revenue, not branding or theory.
A Growth Manager here is a high-agency operator who:
Finds and unlocks scalable distribution channels
Moves fast with imperfect data
Automates anything repeatable
Negotiates deals that compound over time
Takes full ownership of outcomes
This is a hands-on execution role. You will build, test, break, fix, and scale.
What You Will Do
Creator & Partner Growth
Source, evaluate, and onboard creators who can drive high-quality users
Build and negotiate creator partnerships (affiliate, revenue share, performance-based deals)
Run creator campaigns end-to-end: outreach → deal → launch → optimization
Build long-term relationships with creators, not one-off placements
Prioritize volume with intent — not spam
Important:
You are not managing Higgsfield’s own YouTube or social channels.
Your job is growth through external creators and their audiences.
YouTube Growth (Primary Focus)
Own YouTube as a distribution channel through creator collaborations
Drive traffic and usage via creator-generated content
Measure success by output and impact, not vanity metrics
Primary KPI:
Number of new unique creator videos generated per month
Analytics & Decision-Making
Build simple but effective models in Excel / Google Sheets
Estimate traffic, conversions, and revenue impact
Decide which creators, formats, and deals to scale or cut
Turn messy, incomplete data into clear execution decisions
Automation & Scale
Automate creator discovery, outreach, tracking, and reporting.
Build lightweight systems using tools like Sheets, Zapier, Apify, Instantly, CRMs, APIs, or scripts.
Reduce manual work and increase throughput.
Execution & Experimentation
Run fast experiments across platforms (YouTube, TikTok, Instagram, X).
Test formats, incentives, and deal structures.
Learn quickly and iterate.
There is no separation between “creative” and “technical.” One person owns the full cycle.
Who We’re Looking For
We’re looking for smart, high-energy— not perfect resumes.
You should have:
Strong English (spoken and written)
Strong communication and persuasion skills
Comfort working with numbers, spreadsheets, and assumptions
Ability to work independently without hand-holding
High agency, ownership mindset, and bias toward action
Emotional intelligence and confidence in negotiations
Willingness to operate in a fast-paced, high-intensity environment
Russian is required. English is required.
Backgrounds that often do well:
Growth, partnerships, or business development
Sales or performance-driven marketing
Early startup operators or founders
Engineering or computer science backgrounds
Consulting, analytics, or finance with strong execution bias
A technical background is a plus, not a requirement.
Level & Compensation
- All hires join formally at a junior level, regardless of prior experience
- Starting compensation is competitive and paid in USD
- Exceptional candidates with standout B2C or founding-level growth experience may be considered individually
Onboarding & Expectations
Onboarding lasts ~1 week
You receive a playbook and immediate ownership
Very little babysitting — autonomy is expected
From week two, you are expected to operate independently
This role requires high energy, fast thinking, and resilience.
Work Format
On-site only (Almaty office)
No remote or hybrid setup
Full immersion into the team and product is essential
This Role Is NOT a Fit If You:
Prefer strategy over execution
Avoid spreadsheets, metrics, or accountability
Need detailed step-by-step instructions
Are uncomfortable negotiating or pushing back
Expect predictable hours or a 9–5 schedule
Prefer low-intensity environments
Working Hours
This is a high-intensity role with a non-standard schedule.
Workdays: Monday–Saturday (6 days per week)
The working day is aligned with global creators and partners and includes late hours - from 2 pm till 2 am Almaty time.
Expect a high workload and a fast execution pace
This role is best suited for candidates who:
Are comfortable working evenings and nights
Can sustain focus in a high-output environment
Are motivated by speed, ownership, and impact rather than fixed hours
This is not a 9–5 role, and the schedule should be considered carefully before applying.
Relocation & Office Setup
This is a fully on-site role based in Almaty, Kazakhstan.
Remote or hybrid work is not available
Candidates must be willing to relocate and work from the office full-time
The company provides relocation support, including:
Assistance with travel to Almaty
Support during the initial relocation period
Help with legal and administrative setup as needed
Relocation is considered an integral part of the role, as close in-office collaboration is essential for speed, learning, and impact.
What We Offer
Full-time role. Please note: we will not consider candidates planning to combine this role with other jobs.
On-site role in Almaty office.
Long-term growth opportunity — we are looking for candidates interested in learning, growing, and building with the team. A minimum 1.5+ year commitment is expected.
Salary discussed during the interview process, paid in USD
Application deadline: ASAP
Steps:
Submit an application form and attach your CV
Zoom interview with a Hire5 Recruiter
Practical home task
Zoom interview with the founder
Get hired 🎉
Tatyana Khrustaleva
Senior Go Developer
Full time
Remote
Senior Go Developer (Crypto focus; remote) The company (name withheld till the interview stage) is a non-custodial staking, re-staking, and node hosting platform that delivers advanced, secure infrastructure for institutional and retail investors. With automated services and an intuitive interface, we simplify the process of running full nodes, masternodes, and validators across 77 Proof-of-Stake blockchain protocols, hosting tens of thousands of nodes globally.In addition, we contribute to the blockchain ecosystem by offering complimentary tools and RPC endpoints for over 100 blockchain protocols, enabling users and developers to engage with their preferred blockchain networks and build innovative solutions!We are seeking a strong Senior Go Developer with experience in cryptocurrency. Requirements:Cryptocurrency and Node Experience: Minimum 1.5–2 years of experience working in the cryptocurrency space, specifically with nodes.Extensive experience and expertise in Go development.Russian or Ukrainian language proficiency.Knowledge of Node.js is a plus.Experience working in a remote, asynchronous environment.Familiarity with Slack for communication and collaboration.Working hours:You may start your 8-hour working day between 7 and 11 am GMT+3. For example, from 9 am to 5 pm GMT+3, etc.Remote team spanning from Los Angeles to London to Dubai, with minimal calls and Slack-based communication & decision-making.The team consists of 6-10 members with a strong sense of commitment—many have been with us for over 7 years. What we offer:Full-time job (8 working hours per day, Monday-Friday).Remote work. You may be located in any country, just need a good Internet connection, a powerful computer to work from, and the opportunity to adjust your working schedule for the team.Be part of a fast-growing, highly respected company in the crypto industry.Stability. This is not project work, we consider only the candidates looking for a long-term commitment of 1.5+ years.Work autonomously with a team of like-minded professionals.Engage in challenging and innovative projects with cutting-edge blockchain technologies.Salary will be discussed during the interview. Paid in USDT. Application deadline: ASAPSelection process:1. Fill in the application form - attach your CV & a GitHub portfolio link;2. Have a Zoom interview with Hire5 Recruiter;3. Have a technical Zoom meeting with the developer from the company team;4. Have a quick Zoom interview with the CEO of the company;5. Get hired!
Payment in Crypto