Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.
What we offer:
The rate depends on your LOCATION, SENIORITY LEVEL, SKILLS and EXPERIENCE. We've already paid out over $11M to our engineers.
No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best.
We'll manually find the best project for you according to your skills and preferences.
Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours.
We respect your seniority so you can expect no micromanagement or screen trackers.
Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
We will support you from the time you submit the application throughout all cooperation stages.
Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do.
Through our community, we will connect you with the best developers from more than 50 countries.
Currently we have different Senior positions for Full-stack Developers: React & Ruby and Ruby & Node, React & Python.
Requirements - Senior React & Ruby:
5+ years of software development experience
3+ years of commercial experience with React.js and Ruby and Ruby on Rails
Requirements - Senior Ruby & Node (GMT -5:00) Eastern Time (US & Canada), Bogotá, Lima, or other timezones with at least 4 hours of overlap per day:
7+ years of experience with Ruby and Ruby on Rails
5+ years of experience with Node.js
2+ years of experience working for SaaS companies is a strong plus
Experience working with relational databases, particularly PostgreSQL
Understanding of RESTful API design and development
Exposure to Typescript in a development environment
Knowledge of MongoDB or other NoSQL databases
Ability and motivation to quickly learn new tools, technologies, and systems
Strong problem-solving skills and attention to detail
Requirements Senior React & Python:
4+ years of software development experience.
3+ years of commercial experience with React.js and Python.
3+ years of experience with AWS, Django and TypeScript is a must.
Other Requirements:
Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.
Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
Strong self-organizational skills — ability to work full-time remotely with no supervision.
Reliability — we want to trust you and expect that you won’t let us and the client down.
Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.
Sounds good for you? Apply now and join the Lemon.io community!
NOT YOUR TECH STACK?
We have different projects for Senior Full-Stack Developers, so if you have 4+ years of commercial experience in software development and you are fluent with AI Engineering, Python & LLM & AWS/GCP/Azure, UI/UX & Figma, Blockchain: Web3, Wordpress & Figma, Shopify & JavaScript, we would be happy to communicate and provide you with a project that matches your experience. Just apply, and we will share more details with you.
If your experience matches our requirements, be ready for the next steps:
VideoAsk — watch a short video about our startup, up to 10 minutes
Complete your profile on our website
30-minute screening call
Technical interview
Feedback
Magic Box (we are looking for the best project for you).
P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, the U.S., Canada, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), and the the UK. However, we have some exceptions.
At the moment, we don’t have a legal basis to accept applicants from the following countries:
European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia.
Latin America: Cuba and Nicaragua
Most Asian countries and Africa.
We expand and shorten the list of exemptions regularly.
We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.
Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.
Please mention the word SUBSIDIZING when applying to show you read the job post completely (#RMjE2LjczLjIxNi4yMzU=). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.
👉 Please reference you found the job on Remote OK, this helps us get more companies to post here, thanks!
When applying for jobs, you should NEVER have to pay to apply. You should also NEVER have to pay to buy equipment which they then pay you back for later. Also never pay for trainings you have to do. Those are scams! NEVER PAY FOR ANYTHING! Posts that link to pages with "how to work online" are also scams. Don't use them or pay for them. Also always verify you're actually talking to the company in the job post and not an imposter. A good idea is to check the domain name for the site/email and see if it's the actual company's main domain name. Scams in remote work are rampant, be careful! Read more to avoid scams. When clicking on the button to apply above, you will leave Remote OK and go to the job application page for that company outside this site. Remote OK accepts no liability or responsibility as a consequence of any reliance upon information on there (external sites) or here.
Winna.com is an innovative crypto casino, pushing the boundaries of online gaming with cutting-edge technology and a seamless user experience. We are building a high-performance, scalable, and secure platform to serve a growing number of players worldwide. As we scale, we are looking for talented individuals who want to shape the future of crypto gaming with us.
2. The Role
We are seeking a Back-End Developer to build and optimize the foundation of our gaming platform. You will work on API development, database management, and performance optimization while ensuring security and scalability. This role is ideal for someone who enjoys working on high-load systems, solving complex challenges, and driving innovation in a dynamic, fast-paced environment.
3. What We Are Looking For
We need a developer with a strong technical background who is passionate about creating scalable and efficient backend systems.
Experience in the iGaming industry is important—you should be familiar with the mechanics and challenges of online casinos, player transactions, and gaming operations.
A strong understanding of mathematical logic and calculations is valuable, as you will be working with gaming logic and odds calculations.
You should be comfortable working with real-time applications and high-load environments.
4. Key Responsibilities
Design, develop, and maintain APIs for our casino platform
Manage and optimize databases for scalability and efficiency
Ensure high performance and low latency in a high-load environment
Implement robust security measures to protect user data and transactions
Develop and integrate new functionalities into our platform
Work closely with the front-end, DevOps, and external teams to ensure seamless system integration
Optimize and fine-tune gaming logic, mathematical models, and calculations to ensure accurate gameplay mechanics, as well as support real-time dashboard KPIs and data visualizations
5. Skills & Attributes
Tech stack: Strong experience with Node.js, plus expertise in SQL, Redis, Web3, AWS is a plus
Understanding of high-load systems and real-time data processing
Experience designing and optimizing database structures
Knowledge of cryptographic principles and security best practices
Strong problem-solving skills and a passion for mathematical logic and calculations
Familiarity with iGaming industry mechanics is a must—understanding game engines, odds calculations, and player transaction flows
Ability to work independently and collaboratively with a distributed team
Experience integrating blockchain/Web3 technologies is beneficial
6. Why Winna?
Work on an innovative crypto gaming platform with cutting-edge technology
The opportunity to shape the core architecture of a fast-growing casino platform
A dynamic, agile work environment with direct impact on the product
Flexible work options: Remote or Hybrid (Europe)
A talented, passionate team with a startup mindset and flat hierarchies
Competitive compensation based on experience and expertise
7. How to Apply
If you’re excited about this opportunity, we’d love to hear from you! Send us your GitHub, CV, or a short intro about your experience.
We look forward to meeting you! 🚀
Please mention the word SMILING when applying to show you read the job post completely (#RMjE2LjczLjIxNi4yMzU=). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.
👉 Please reference you found the job on Remote OK, this helps us get more companies to post here, thanks!
When applying for jobs, you should NEVER have to pay to apply. You should also NEVER have to pay to buy equipment which they then pay you back for later. Also never pay for trainings you have to do. Those are scams! NEVER PAY FOR ANYTHING! Posts that link to pages with "how to work online" are also scams. Don't use them or pay for them. Also always verify you're actually talking to the company in the job post and not an imposter. A good idea is to check the domain name for the site/email and see if it's the actual company's main domain name. Scams in remote work are rampant, be careful! Read more to avoid scams. When clicking on the button to apply above, you will leave Remote OK and go to the job application page for that company outside this site. Remote OK accepts no liability or responsibility as a consequence of any reliance upon information on there (external sites) or here.
This job post is closed and the position is probably filled. Please do not apply. Work for Lemon.io and want to re-open this job? Use the edit link in the email when you posted the job!
Are you a talented developer looking for a remote job that lets you show your skills and get better compensation and career growth? Look no further than Lemon.io - the marketplace that connects you with hand-picked startups in the US and Europe.
What do we offer:
We respect your time: here is no micromanagement or time trackers.
you can earn with us $5k - $7.5k monthly - the rate depends on your skills and experience. We've already paid out over $10M to our engineers.
You will enjoy your work - it’s possible to communicate async and choose a schedule that works best for you.
You will communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
We will support you from the time when the application will be started during all our cooperation.
No more hunting for clients or negotiating rates - let us handle the business side of things so you can focus on what you do best.
We'll manually find you the best project according to your skills and preferences.
You will work at the fast-paced startup environment that will keep you motivated and engaged.
We will connect you with the best developers in the world through our community. Also every month we have two online events - you can join them as a Member or a Speaker.
P.S. Keep up-to-date with Lemon.io events by following us on LinkedIn.
We also collaborate with other companies through staff augmentation. More details are here.
Currently we are seeking for Senior PHP/React Developer but we have a large number of different projects for Senior Full-Stack Developers, so if you have 4+ years of commercial experience in software development you are fluent with Python, Ruby on Rails, Rust, Ruby, Node.js, or React Native - we would be happy to communicate and provide you a project which matches with your experience. Just apply, and we will share with you more details. The rate depends on your skills and experience.
Requirements:
Proficiency with PHP/Laravel (2+ years of exp)
Strong experience with React (2+ years of exp)
Experience with relational databases (e.g., MySQL) and NoSQL (e.g., MongoDB).
Proficiency in developing both GraphQL and RESTful APIs.
Familiarity with cloud computing (GCP, AWS, Azure)
Experience with other PHP frameworks such as Symfony, Yii, or CodeIgniter would be a plus
Knowledge of other server-side programming languages and frameworks (e.g., Node.js) would be a plus.
Familiarity with deployment workflows, continuous integration/continuous deployment (CI/CD) processes, and containerization tools like Docker is a plus.
Experience with other programming languages and technologies beyond PHP and React would be advantageous.
Good command of English, both written and spoken, as you’ll be communicating with clients directly
Strong organizational skills — ability to work full-time remotely with no supervision
Responsibility — we want to trust you
Soft skills — we value clear and effective communication, at the same time, don't force you to become a public speaker
Ready to take your career to the next level? Apply now and join the Lemon.io community!
If your experience matches with our requirements be ready for the next steps:
VideoAsk (about 10 minutes)
Completing your me.lemon profile
30 minutes Screening call with our Recruiters
Technical Interview with our Developers
Feedback
Magic Box (we are looking for best project for you)
P.S. We work with developers from LATAM, Canada, UK, Europe BUT we have some exceptions.
At the moment, we don’t have a legal basis to accept applicants from Monaco, Belarus, Russia, Serbia, Denmark, Norway, Luxemburg, Iceland, Liechtenstein, San Marino, Belize, Cuba, Nicaragua, Saint Lucia, so we don’t work with applicants from these countries.
Please note that due to the overwhelming number of applications, only suitable candidates will be contacted for an interview.
We strongly ask you to send your CVs in ENGLISH. Application in English will be considered first. Good luck to everyone!
Please mention the word ECSTASIES when applying to show you read the job post completely (#RMjE2LjczLjIxNi4yMzU=). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.
Salary and compensation
$60,000 — $100,000/year
Benefits
🌎 Distributed team
⏰ Async
👀 No monitoring system
🚫 No politics at work
🎅 We hire old (and young)
How do you apply?
This job post has been closed by the poster, which means they probably have enough applicants now. Please do not apply.
This job post is closed and the position is probably filled. Please do not apply. Work for lemon.io and want to re-open this job? Use the edit link in the email when you posted the job!
Get a remote job that you will love with better compensation and career growth.
We’re Lemon.io — a marketplace where we match you with hand-picked startups from the US and Europe.
Why work with us:
We’ll find you a team that respects you. No time-trackers or any micromanagement stuff
Our engineers earn $5k - $10k / month. We’ve already paid out over $10M.
Choose your schedule. We have both full- and part-time projects.
No project managers in the middle — only direct communications with clients, most of whom have a technical background
Our customer success team provides life support to help you resolve anything.
You don’t have to look for clients and or negotiate anymore: just do what you do best and leave us the rest.
Requirements:
3 + years of programming experience in any of the following: Solana, Web3.js, Ethereum+ ethers.js, DEFI, NFT
5+ years of experience using any of the following: Python, Rust, Node.js, Solidity
Experience with system architecture is a strong advantage
Knowledge of cryptography and blockchain protocol
Knowledge of blockchain management and data protection
Experience in Bitcoin Core code bases and blockchain with a focus on privacy-oriented solutions
Good command of English, both written and spoken, as you’ll be communicating with clients directly
Strong organizational skills — ability to work full-time remotely with no supervision
Responsibility — we want to trust you
Soft skills — we don’t ask you to find a topic for a small talk, but being just polite is OK
Apply today, and our team will get back to you within 2 business days!
Please mention the word UNDAMAGED when applying to show you read the job post completely (#RMjE2LjczLjIxNi4yMzU=). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.
Salary and compensation
$60,000 — $120,000/year
Benefits
🌎 Distributed team
⏰ Async
👀 No monitoring system
🚫 No politics at work
How do you apply?
This job post has been closed by the poster, which means they probably have enough applicants now. Please do not apply.
This job post is closed and the position is probably filled. Please do not apply. Work for Shardeum and want to re-open this job? Use the edit link in the email when you posted the job!
About the Company:
Shardeum is a sharded EVM-based L1 smart contract platform with a mission to enable decentralization for everyone. The Shardeum Foundation has raised $18MM in seed funding from notable investors such as Jane Street, The Spartan Group, Struck Crypto and Balaji Srinivasan to name a few.
Currently, decentralized applications are limited by rising gas fees and long transaction queues as a result of blockchains that can’t scale. Our team envisions a world where decentralized applications are adopted globally, enabling a more equitable society with less power put in the hands of a few centralized entities.
To accelerate the adoption of dApps, Shardeum is building the most advanced iteration of a state sharded smart contract platform. Dynamic state sharding enables Shardeum to increase TPS with each node added to the network. We are obsessed with making the vision for a decentralized future a reality and seek individuals who share the same passion. The Shardeum Foundation is a small but highly experienced team distributed globally who have worked with NASA, Yahoo, Raytheon, Zynga, Microsoft, Ethereum Foundation, PayPal, etc.
Position: Software Engineer
Shardeum is looking for a talented software engineer to contribute code, identify and resolve bugs, test and optimize features and harden code.
About The Role
Ideally we are looking for people with experience writing software in languages like Node.js, TypeScript, C, C++, Go and Rust for P2P or distributed applications. The work is extremely challenging and the people you will be working with are amazing. You would be working remotely with a small but highly experienced team who have worked with NASA, Yahoo, Raytheon, Zynga, Microsoft, Ethereum Foundation, PayPal, etc.
Shardeum has $18.2M in seed funding to pay you a comfortable salary. The position is remote and you may work from anywhere in the world during hours convenient for you. There is massive upside potential with a vesting schedule.
Experience:
Node.js
TypeScript
SQL
Education:
Data structures and algorithms
Operating Systems fundamentals
Networking fundamentals
Object-Oriented Programming
Design Patterns
Cryptography
Familiar With:
Linux
Git
AWS
Dockers
VSCode
Blockchain
Distributed Systems
We are building the infrastructure for Web 3.0. It's going to be a rollercoaster ride but promises to be fun!
About the Founders:
Nischal Shetty: Founder of WazirX, India’s largest crypto exchange with over 10M users and $45B+ trading volume. Prior to WazirX, he built and scaled a social media product called Crowdfire to over 20M users. Previously featured in the Forbes India 30 under 30 list, he is a blockchain evangelist and one of the most notable proponents of crypto in India.
Omar Syed: Omar is a blockchain architect with over 30 years of experience in helping organizations such as NASA, Yahoo, Zynga build fault-tolerant, distributed systems. Omar holds a B.S. and M.S. from Case Western Reserve University with specialization in Artificial Intelligence.
Please mention the word ACCOMPLISHED when applying to show you read the job post completely (#RMjE2LjczLjIxNi4yMzU=). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.
Salary and compensation
$50,000 — $400,000/year
Benefits
🌎 Distributed team
⏰ Async
🏖 Unlimited vacation
🥧 Pay in crypto
💰 Equity compensation
⬜️ No whiteboard interview
🚫 No politics at work
🎅 We hire old (and young)
How do you apply?
This job post has been closed by the poster, which means they probably have enough applicants now. Please do not apply.
This job post is closed and the position is probably filled. Please do not apply. Work for RDX Works and want to re-open this job? Use the edit link in the email when you posted the job!
What is the job?
Are you happiest when using modern technologies to build complex APIs and slick web solutions from scratch? Do you enjoy working with autonomy and being left to use your creative flare to devise lever solutions? If so, joining us as a JavaScript Developer could be your next move!
You will work from a coherent vision. Step by step you will turn requirements into top-notch products by working with your immediate small but collaborative team, stakeholders in the wider business and testers through rapid cycles of implementation, feedback gathering, and tuning to produce delightful results. You will drive architectural decisions & enjoy the constant challenges that will become an integral part of your working day and boring coding will remain a scary memory.
You will help define the way forward for DeFi as an industry; when it comes to deciding new paradigms for user experiences, authentication models, interoperability expectations, and the entire concept of user accounts whilst working at the very cutting edge of a space undergoing furious growth.
RDX Works is seeking an industrious developer to build the systems that will define the future of decentralized finance (DeFi).
What are we looking for?
You’re a generalist, and have experience building REST services and/or WebSocket backends & enjoy variety in your projects
You like to actively shape designs and play with ideas as you build, and are comfortable with iterating until it feels just right.
You’re able to isolate the 90% case for user experiences. You think in terms of making the most common interactions effortless, rather than making anything possible.
You are adept at going from problem statements to solution design, and then breaking that high-level design down into discrete segments of useful work.
Once you understand a system concept, you are able to identify the highest value area to work on next. You can work towards the desired end state and come up with your own tasks to achieve it along the way.
You could be a great fit if our company values resonate with you - Ask for help, Get shit done. Be excellent to each other. Take the initiative, You’ve got this. Do the right thing, not the easy thing. Strong opinions, loosely held.
What do you need?
You will be proven commercial experience as an engineer building consumer-facing products/applications, using TypeScript or JavaScript ES6 for both front & back end development
You will be comfortable using JavaScript frameworks such as ReactJS, NodeJS or VueJS.
If you have familiarity with the current crypto ecosystem it is a huge plus, but just having the desire to learn will do for us!
Who are we?
At RDX Works, we're a team of like-minded thinkers who have long been convinced that we're living in the earliest stages of a global financial revolution. This revolution is being fuelled by decentralized finance (or DeFi for short), which is enabling an assortment of pioneering developers and entrepreneurs to re-invent almost every financial product that is currently traded and invested in traditional markets, without requiring central authorities or siloed infrastructure. DeFi has captured a great deal of attention and investment in the crypto-aware niche, growing assets under management from $1 billion to over $200 billion in a few years. Impressive as its growth has been, its current market size isn't even a rounding error on the over $400 trillion held in traditional finance. We're focused on what it will take to go from billions to trillions.
RDX went back to first principles to come up with the right technical solution—the first layer-one protocol built specifically for mainstream DeFi—and we have already tested out at over 1 million transactions per second. We're keenly aware that the need for an infinitely scalable platform is only one prerequisite among many for mass adoption, and we're also blazing new ground in the areas of purpose-built developer tools, user experiences, and regulatory integration.
We have forged a path deep into the future of what distributed ledger technology is going to look like and we need you to come and be part of the team that is making that happen right now.
If this job sounds like it was made for you, then please apply directly via the link or if you don’t have an up to date CV to apply with, contact [email protected] for more information.
Alternatively, if you feel like you don’t match all of the requirements, we would love you to still apply anyway. We understand that confidence gaps and imposter syndrome can get in the way of meeting incredible candidates and we wouldn’t want this to prevent us from meeting you; especially as we are big advocates of helping people learn & grow. This is also another reason we do not advertise salaries, we want to keep it as even a playing field as possible!
Please mention the word EFFUSIVELY when applying to show you read the job post completely (#RMjE2LjczLjIxNi4yMzU=). This is a feature to avoid fake spam applicants. Companies can search these words to find applicants that read this and instantly see they're human.
Salary and compensation
$70,000 — $100,000/year
Benefits
🌎 Distributed team
⏰ Async
🏖 Paid time off
🏔 Company retreats
🏬 Coworking budget
📚 Learning budget
🖥 Home office budget
💰 Equity compensation
👀 No monitoring system
🎅 We hire old (and young)
How do you apply?
This job post has been closed by the poster, which means they probably have enough applicants now. Please do not apply.
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