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Junior Developer Startup Jobs in Colorado (NOW HIRING)

UseBlocky

Senior Blockchain Engineer

Almont, CO · On-site +1

$157K - $178K/yr

Conduct code reviews and mentor junior engineers. * Stay current with emerging blockchain ... Previous experience working in a startup or fast-paced product environment. What We Offer

True Anomaly

Principal Mechanical Engineer

Denver, CO

$180K - $300K/yr

... to junior engineers. This is an opportunity to design and develop our next generation LEO/GEO ... Experience working in a startup or similarly dynamic and fast-paced environment. * Familiarity with ...

CesiumAstro

Senior Electronics Engineer II

Westminster, CO · On-site

$108K - $133K/yr

If you enjoy working in a startup environment and are passionate about developing leading-edge ... Mentor junior and senior engineers to build technical understanding and professional development.

Lunar Outpost

Senior GNC Engineer - Sensors

Arvada, CO · On-site

... startup environment. Take the #NextLeap with Lunar Outpost and work on the Pegasus LTV, which will ... Mentor junior engineers and promote a culture of technical excellence and innovation Required ...

CesiumAstro

Senior Electronics Engineer II

Westminster, CO

$108K - $133K/yr

If you enjoy working in a startup environment and are passionate about developing leading-edge ... Mentor junior and senior engineers to build technical understanding and professional development.

Lunar Outpost

Senior GNC Engineer - Sensors

Arvada, CO

$107K - $147K/yr

... startup environment. Take the #NextLeap with Lunar Outpost and work on the Pegasus LTV, which will ... Mentor junior engineers and promote a culture of technical excellence and innovation Required ...

CesiumAstro

Senior Electronics Engineer II

Westminster, CO

$108K - $133K/yr

If you enjoy working in a startup environment and are passionate about developing leading-edge ... Mentor junior and senior engineers to build technical understanding and professional development.

Infleqtion

Sr Software Engineer

Boulder, CO · On-site

$106K - $145K/yr

At Infleqtion we embrace a startup mentality driven by results, urgency, and customer-focused ... Mentor and guide junior engineers, fostering their growth and enhancing the team's technical ...

Infleqtion

Sr Software Engineer

Boulder, CO · On-site

$106K - $145K/yr

At Infleqtion we embrace a startup mentality driven by results, urgency, and customer-focused ... Mentor and guide junior engineers, fostering their growth and enhancing the team's technical ...

Infleqtion

Sr Software Engineer

Boulder, CO

$106K - $145K/yr

At Infleqtion we embrace a startup mentality driven by results, urgency, and customer-focused ... Mentor and guide junior engineers, fostering their growth and enhancing the team's technical ...

Urban Sky

Senior Electrical Engineer

Denver, CO · On-site

$110K - $144K/yr

Urban Sky is a venture-backed aerospace startup that pioneers utilization of the stratosphere and ... junior engineers through complex design trades. * Participate in end-user engagement to gather ...

Urban Sky

Senior Electrical Engineer

Denver, CO

$110K - $144K/yr

Urban Sky is a venture-backed aerospace startup that pioneers utilization of the stratosphere and ... junior engineers through complex design trades. * Participate in end-user engagement to gather ...

Ursa Major

Senior Flight Test Engineer

Berthoud, CO · On-site

$121K - $150K/yr

... junior engineers and leading project teams. As a Senior Flight Test Engineer, you'll serve as the ... Comfortable working in a fast-paced, startup environment, adapting to evolving priorities * Willing ...

Ursa Major

Senior Flight Test Engineer

Berthoud, CO

$121K - $150K/yr

... junior engineers and leading project teams. As a Senior Flight Test Engineer, you'll serve as the ... Comfortable working in a fast-paced, startup environment, adapting to evolving priorities * Willing ...

True Anomaly

Staff Electrical Engineer

Denver, CO · On-site

$175K - $265K/yr

Mentor junior engineers to improve design skill sets and increase capabilities within the ... Experience working in a fast-paced, startup environment or a similarly dynamic setting COMPENSATION

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All JobsJunior Developer Startup JobsJunior Developer Startup Jobs in Colorado

Junior Developer Startup information

See Colorado salary details

$25.2K

$93.6K

$144.6K

How much do junior developer startup jobs pay per year?

As of Jun 24, 2026, the average yearly pay for junior developer startup in Colorado is $93,559.00, according to ZipRecruiter salary data. Most workers in this role earn between $70,500.00 and $91,500.00 per year, depending on experience, location, and employer.

What is a Junior Developer Startup job?

A Junior Developer Startup job involves working as an entry-level software developer in a fast-paced startup environment. You'll likely assist in coding, debugging, and testing software while collaborating with a small team. Startups often require developers to be adaptable, learn quickly, and take on various responsibilities beyond coding. This role provides great exposure to modern technologies and agile development practices. It’s a valuable opportunity to grow your skills and gain hands-on experience in a dynamic setting.

What are the key skills and qualifications needed to thrive in the Junior Developer Startup position, and why are they important?

To thrive as a Junior Developer at a startup, you need foundational knowledge of programming languages (such as JavaScript, Python, or Ruby), basic understanding of web development, and a degree in computer science or related experience. Familiarity with source control systems like Git, cloud services, and popular frameworks is important, and participation in coding bootcamps or relevant certifications is a plus. Strong problem-solving, adaptability, and effective communication are key soft skills for collaborating in a dynamic, fast-paced environment. These abilities help junior developers quickly learn, contribute to product development, and grow within the rapidly evolving startup landscape.

What are some common challenges a Junior Developer may face when working at a startup?

Junior Developers in startup environments often encounter rapid changes in project direction, shifting priorities, and the need to learn new technologies quickly. Unlike more established companies, startups may have less formalized onboarding and training, requiring you to take initiative and learn on the go. You'll likely collaborate closely with small, cross-functional teams, which means communication skills and flexibility are essential. Embracing these challenges can accelerate your growth, expand your technical skill set, and offer opportunities to make a direct, visible impact on the company's products.

What are the most commonly searched types of Developer Startup jobs in Colorado? The most popular types of Developer Startup jobs in Colorado are:
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Junior Developer Startup jobs near you

Senior Blockchain Engineer

UseBlocky

Almont, CO • On-site, Remote

$157K - $178K/yr

Full-time

Posted 12 days ago

Job description

About UseBlocky

UseBlocky is a global technology company specializing in Blockchain, Web3, AI, and custom software development. Founded in 2020, the company helps startups, enterprises, and SMBs build innovative digital products, including decentralized applications (dApps), smart contracts, crypto platforms, mobile applications, and scalable web solutions. UseBlocky combines deep technical expertise with a remote-first culture, empowering teams to deliver cutting-edge products across industries such as fintech, blockchain gaming, DeFi, and emerging technologies. The company is committed to innovation, continuous learning, and creating impactful solutions that shape the future of digital experiences.

About the Role

We are looking for a highly skilled Senior Blockchain Engineer to join our engineering team and help design, build, and scale secure blockchain-based products. The ideal candidate has strong experience in smart contract development, blockchain protocols, decentralized applications, and backend systems.

You will work closely with product, engineering, and security teams to develop robust Web3 solutions, contribute to technical architecture, and ensure our blockchain infrastructure is secure, scalable, and reliable.

Key Responsibilities
  • Design, develop, test, and deploy smart contracts and blockchain-based applications.
  • Build and maintain decentralized applications, blockchain integrations, and backend services.
  • Work with blockchain networks such as Ethereum, Polygon, Solana, BNB Chain, Avalanche, or similar ecosystems.
  • Review and optimize smart contracts for security, gas efficiency, and performance.
  • Collaborate with frontend, backend, product, and security teams to deliver high-quality Web3 products.
  • Participate in architecture decisions and contribute to technical strategy.
  • Integrate wallets, token standards, DeFi protocols, NFTs, DAOs, or other blockchain infrastructure as needed.
  • Write clean, maintainable, well-documented code.
  • Conduct code reviews and mentor junior engineers.
  • Stay current with emerging blockchain technologies, security standards, and industry best practices.
Required Qualifications
  • 5+ years of professional software engineering experience.
  • 3+ years of hands-on blockchain or Web3 development experience.
  • Strong experience with Solidity, Rust, Go, or other blockchain-related programming languages.
  • Experience developing and deploying smart contracts on mainnet or testnet environments.
  • Strong understanding of blockchain concepts, including consensus mechanisms, wallets, private keys, transactions, gas fees, bridges, and token standards.
  • Experience with frameworks and tools such as Hardhat, Foundry, Truffle, Web3.js, Ethers.js, Anchor, or similar.
  • Solid backend development experience using Node.js, TypeScript, Go, Python, or similar technologies.
  • Strong understanding of security best practices for smart contracts and decentralized systems.
  • Experience with Git, CI/CD workflows, APIs, databases, and cloud infrastructure.
  • Excellent problem-solving, communication, and teamwork skills.
Nice to Have
  • Experience with DeFi, staking, tokenomics, NFT platforms, Layer 2 solutions, or cross-chain protocols.
  • Familiarity with smart contract audits and formal verification.
  • Open-source contributions in the blockchain or Web3 ecosystem.
  • Experience with indexing tools such as The Graph.
  • Knowledge of zero-knowledge proofs, account abstraction, MEV, or rollup technologies.
  • Previous experience working in a startup or fast-paced product environment.
What We Offer
  • Competitive salary and performance-based incentives.
  • Flexible working environment.
  • Opportunity to work on innovative blockchain and Web3 products.
  • Collaborative and growth-focused team culture.
  • Professional development and learning opportunities.
  • The chance to make a meaningful impact in a rapidly growing industry.
How to Apply

Please submit your resume, GitHub profile, portfolio, or examples of previous blockchain projects. We would love to hear about smart contracts, protocols, or Web3 applications you have built or contributed to.

Join us and help build the future of decentralized technology.