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pubGENIUS is a React.js +Next.js development agency and ad tech startup. We are looking for stellar developers to join our agency team to build websites and apps for clients in the US and Europe. We specialize in decentralized finance (Defi crypto/NFT/blockchain), fintech, and healthcare verticals, but occasionally serve others as well such as e-commerce.
We are looking for a Software Engineer with strong Node.js and AWS experience to join us on a part-time, project-based basis. You will work on real client products and internal systems, alongside at least one other developer and with support from senior engineers. Each project has a dedicated project manager to keep things moving.
What You'll Be Doing
You will join a team of around 15 people. Each project has a project manager. You will work with at least one other developer and receive support from senior engineers.
Requirements
We are looking for a Software Engineer with strong Node.js and AWS experience to join us on a part-time, project-based basis. You will work on real client products and internal systems, alongside at least one other developer and with support from senior engineers. Each project has a dedicated project manager to keep things moving.
What You'll Be Doing
- Build and scale backend services using Node.js and TypeScript
- Design and implement event-driven systems using AWS Lambda, SNS, and SQS
- Develop and maintain APIs for web and mobile applications
- Write efficient queries for Aurora MySQL and work with Redis where needed
- Collaborate with PMs, designers, and developers on delivery
- Participate in code reviews, planning, and architecture discussions
- Debug production issues and improve system performance
You will join a team of around 15 people. Each project has a project manager. You will work with at least one other developer and receive support from senior engineers.
Requirements
- Degree in Computer Science or related field
- 3+ years of software engineering experience
- Strong Node.js and JavaScript knowledge
- Experience with AWS, especially Lambda, SNS, SQS
- Experience with event-driven architecture
- Solid experience with MySQL, ideally Aurora
- Experience building and maintaining APIs
- Strong debugging and problem-solving skills
- Good communication skills in English, C1 or higher
- Comfortable working in UTC ±3 hours
- Clear thinking and ownership
- Attention to detail
- Ability to work independently
- Strong collaboration skills
- Fully remote work from anywhere
- Flexible hours
- Paid vacation and sick days
- We do not review applications via LinkedIn DMs or email. Please apply through the application link
- We do not work with staffing agencies or third-party recruiters. Direct applicants only
Key Skills
Ranked by relevance
aws
mysql
javascript
reactjs
redis
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- Posted
- Mar 24, 2026
- Type
- Full-time
- Level
- Mid-Senior
- Location
- Spain
- Company
- Pubgenius Inc.
Industries
IT Services
IT Consulting
Categories
Other
Related Jobs
3 roles aligned with this opportunity
View Job Details
Related
Apply for this Position
2026-05-27
Full-time
Not Applicable
India
IT Services
Other
View Job Details
Related
Software Engineer JAVA
2026-05-28
Full-time
Associate
France
IT Services
Other
View Job Details
Related
AI Software Engineer (m/f/d) - Berlin
2026-05-21
Full-time
Mid-Senior
Germany
Staffing
Information Technology