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Trusted by Businesses

Kris, Blockchain & Full Stack Software Engineer

Singapore
Last Updated: 5 Mar 2024
Identity Verified
Programming Skills Verified

- Engineer who has 6+ years of experience with many programming languages, frameworks, and platforms; - 2+ years experience with developing smart contracts on Rust; - Solid skills with Solidity; - Working experience in building an NFT marketplace platform on Polygon and Binance Smart Chain using ERC-721 and ERC-1155; - Experience with ether.js, web3.js, and JS/TS frameworks; - Familiar with blockchain Ethereum, Binance, Tron, Solana, Polkadot, Tezos, Polygon, Huobi ECO chain, etc; - Deep knowledge in implemented Metamask, Torus, and other wallets to increase user experiences with the web apps; - Advanced English; - Available ASAP.

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Principle

Principle

Solidity

Solidity

Rust

Rust   2 yr.

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Maria М., UX/UI Designer

Zaporizhia, Ukraine
Last Updated: 4 Jul 2023

- UI/UX Designer with 3 years of experience in the IT industry - Have good strategic thinking and a marketing background - Upper-Intermediate English - Available ASAP

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Principle

Principle

UI/UX

UI/UX

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Kirill Kh., UI/UX Designer

Kharkiv, Ukraine
Last Updated: 7 Aug 2023

- UI/UX designer with more than 7-year experience in providing customized design solutions for complex SaaS, B2B, B2C products and mobile applications, introducing only the highest level of UI/UX in each project. - My philosophy is to provide a quality product in the most efficient manner. I always adhere to my development stages in creating a product. You will not get work that is done poorly and you will not have to change it. - I always hear and understand what the customer wants, so you don’t have to spend a hundred hours explaining what your product requires. - Quick learner, team player, goal-oriented and responsible -Intermediate+ English - Availability starting from 01.09.2023

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Principle

Principle

UI/UX

UI/UX

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Kirill Kh., Senior UI/UX Designer

Ukraine
Last Updated: 4 Jul 2023

- 7 years experience in providing customized design solutions for complex SaaS, B2B, and B2C products and mobile applications, introducing only the highest level of UI/UX in each project; - Deep skills working with UI / UX Design; - Good knowledge of Web & Tablet App Design; - Experience in Mobile App Design (iOS/Android); - Good abilities in Low-fidelity & high-fidelity prototyping; - Experience in Wireframing / Sitemap / Userflow; - In-depth skills in creating material, adaptive and responsive design; - Intermediate English; - Available ASAP.

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Principle

Principle

UI/UX

UI/UX   7 yr.

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Timofey B., UI/UX and Product Designer

Kyiv, Ukraine
Last Updated: 7 Aug 2023

- More than 19 years at  Design sphere - Proven work experience as a UI/UX , Graphic, Product Designer  - Proven work experience as a Design Lead - Art direction of digital design projects - Design department management - Up-to-date knowledge of design software like Adobe Illustrator and Photoshop, Figma  - Experience in creating own IT product - Team spirit; strong communication skills to collaborate with various stakeholders  - Good time-management skills  -Intermediate+ English - Availability starting from 21.08.2023

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Principle

Principle

Figma

Figma

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Talk to Our Talent Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager

Only 3 Steps to Hire Principle Engineers

1
Talk to Our Talent Expert
Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
2
Meet Carefully Matched Talents
Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person.
3
Validate Your Choice
Bring new talent on board with a trial period to confirm you hire the right one. There are no termination fees or hidden costs.

Welcome to Upstaff

Yaroslav Kuntsevych
Upstaff.com was launched in 2019, addressing software service companies, startups and ISVs, increasingly varying and evolving needs for qualified software engineers

Yaroslav Kuntsevych

CEO
Trusted by People
Henry Akwerigbe
Henry Akwerigbe
This is a super team to work with. Through Upstaff, I have had multiple projects to work on. Work culture has been awesome, teammates have been super nice and collaborative, with a very professional management. There's always a project for you if you're into tech such Front-end, Back-end, Mobile Development, Fullstack, Data Analytics, QA, Machine Learning / AI, Web3, Gaming and lots more. It gets even better because many projects even allow full remote from anywhere! Nice job to the Upstaff Team 🙌🏽.
Vitalii Stalynskyi
Vitalii Stalynskyi
I have been working with Upstaff for over a year on a project related to landscape design and management of contractors in land design projects. During the project, we have done a lot of work on migrating the project to a multitenant architecture and are currently working on new features from the backlog. When we started this project, the hiring processes were organized well. Everything went smoothly, and we were able to start working quickly. Payments always come on time, and there is always support from managers. All issues are resolved quickly. Overall, I am very happy with my experience working with Upstaff, and I recommend them to anyone looking for a new project. They are a reliable company that provides great projects and conditions. I highly recommend them to anyone looking for a partner for their next project.
Владислав «Sheepbar» Баранов
Владислав «Sheepbar» Баранов
We've been with Upstaff for over 2 years, finding great long-term PHP and Android projects for our available developers. The support is constant, and payments are always on time. Upstaff's efficient processes have made our experience satisfying and their reliable assistance has been invaluable.
Roman Masniuk
Roman Masniuk
I worked with Upstaff engineers for over 2 years, and my experience with them was great. We deployed several individual contributors to clients' implementations and put up two teams of upstaff engineers. Managers' understanding of tech and engineering is head and shoulders above other agencies. They have a solid selection of engineers, each time presented strong candidates. They were able to address our needs and resolve things very fast. Managers and devs were responsive and proactive. Great experience!
Yanina Antipova
Yanina Antipova
Хочу виразити велику подяку за таку швидку роботу по підбору двох розробників. Та ще й у такий короткий термін-2 дні. Це мене здивувало, адже ми шукали вже цілий місяць. І знайдені кандидати нам не підходили Це щось неймовірне. Доречі, ці кандидати працюють у нас і зараз. Та надать приклад іншим працівникам. Гарного дня!)
Наталья Кравцова
Наталья Кравцова
I discovered an exciting and well-paying project on Upstaff, and I couldn't be happier with my experience. Upstaff's platform is a gem for freelancers like me. It not only connects you with intriguing projects but also ensures fair compensation and a seamless work environment. If you're a programmer seeking quality opportunities, I highly recommend Upstaff.
Volodymyr
Volodymyr
Leaving a review to express how delighted I am to have found such a great side gig here. The project is intriguing, and I'm really enjoying the team dynamics. I'm also quite satisfied with the compensation aspect. It's crucial to feel valued for the work you put in. Overall, I'm grateful for the opportunity to contribute to this project and share my expertise. I'm thrilled to give a shoutout and recommendation to anyone seeking an engaging and rewarding work opportunity.

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FAQs about Principle Development

How do I hire a Principle developer? Arrow

Are you desperately looking for a Principle developer validated to your requirements and skills? Are you lacking in resources and tools to find the right developer? If yes, then you are at the right place! Because at Upstaff, the selection of the Principle Developer is done professionally as per your requirement, in a short time of just a few days, from calling to the instant task of your validated developer, with all your required skills.

Where is the best place to find Principle developers? Arrow

Sure enough, within the network there must be dozens, if not hundreds, of services and platforms where you can look for the Principle guy you need, but just Upstaff lets you sort out the best of the best real qualified developers practically in a couple of minutes, so that you will be able to select the one whose personality will be a perfect fit to your company. This is the case when you can create a genuinely “Pizza” type of service in the field of custom software development.

How are Upstaff Principle developers different? Arrow

Vetting by expert human reviewers is combined with historically curated feedback from clients and team-mates, which has enabled us to save, on average, more than 50 hours for each client team evaluating Principle candidates for every position. We live and breathe technical excellence, borne out of extensive industry expertise.

How quickly can I hire Principle developers through Upstaff? Arrow

Our process begins with a 30-minute discovery call: we’ll discuss your pain points, technical requirements, and team diversity. Meet Carefully Matched Principle Talents. Upon your meeting confirmation, we’ll send you profiles and arrange an introduction call with the right talents for your project, within 1-3 days. Schedule a call to meet Principle engineers in person. Make the right call. Bring a new Principle developer on board with a trial period: confirm that the person you hired does the job right, no termination fees and no hidden fees.

How does Upstaff vet remote Principle engineers? Arrow

After this introductory round, Upstaff Managers do an eval of the soft skills of the candidates before the hiring decision is approved or rejected. For the hard skills, the Upstaff Staffing Platform has a short testing session to check their Principle skills or engage a senior developer to do a technical interview for more senior developers. You can reuse some of the hard and soft skills of past candidates to connect them with other jobs in the future (see below). Upstaff managers also do an eval of the talent before approving them for further work, allowing us to accelerate the work and ability to scale, but also providing information to clients on the talent pipeline. Finally, we also have a matching engine within the work mining system that matches candidates and jobs in real time.

How to hire Principle developer? Arrow

If recruiting services and job boards are not your 1st option, you may want to consider a client-oriented service like Upstaff to find & hire Principle developers. Upstaff has a network of vetted and tested Principle developers. Here, you can hire web developers for a few simple coding tasks with Principle.

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How and where is Principle used?

  • Real-time Analytics: Monitoring network traffic
  • Automated Testing: Ensuring software quality
  • Behavior Analysis: Detecting anomalies in user behavior
  • Predictive Maintenance: Identifying machinery failures
  • Fraud Detection: Preventing fraudulent activities
  • Natural Language Processing: Analyzing customer feedback
  • Personalized Recommendations: Offering tailored product suggestions
  • Image Recognition: Classifying images accurately
  • Healthcare Diagnostics: Assisting in medical diagnosis
  • Supply Chain Optimization: Streamlining logistics operations

Compare Junior, Middle, Senior, and Expert/Team Lead Principle Developer roles

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior0-2 years
  • Code implementation
  • Bug fixing
  • Assist in testing
$55,000
Middle2-5 years
  • Module development
  • Code optimization
  • Participate in design
$75,000
Senior5-8 years
  • Lead development projects
  • Mentor junior developers
  • Architect solutions
$95,000
Expert/Team Lead8+ years
  • Set technical direction
  • Manage team
  • Drive innovation
$120,000

Quick Facts about Principle.

  • Principle Software Development was born in 1970, the era of disco balls and funky grooves.
  • Most developers groove to web development and mobile app creation with this tech.
  • Entry into Principle Software Development requires a brain wired like Neo from The Matrix.
  • Its best buddy in the tech world is Agile Methodology, they make a killer duo.
  • Fun Fact: Principle Software Development can make your code sing and dance if you treat it right!

TOP Principle Related Technologies

  1. Python (Guido van Rossum, 1991)
  2. JavaScript (Brendan Eich, 1995)
  3. Java (James Gosling, 1995)
  4. C++ (Bjarne Stroustrup, 1985)
  5. C# (Microsoft, 2000)

What are top Principle instruments and tools?

  • Git: Version control system by Linus Torvalds, 2005
  • Python: Programming language by Guido Van Rossum, 1991
  • Docker: Containerization platform by Docker Inc., 2013
  • Slack: Team collaboration tool by Stewart Butterfield, 2013
  • JIRA: Issue tracking by Atlassian, 2002

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Talk to Our Talent Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.
Manager
Maria Lapko
Global Partnership Manager