Back-end Developer Jobs

New

Sr. Back-End Engineer

This is a once in a life time opportunity to join what is soon to be a unicorn p...

Location

United States , San Francisco

Salary:

200000.00 - 300000.00 USD / Year

80Twenty

Expiration Date

Until further notice

Requirements

Startup mindset
6+ years of back-end development experience, with deep expertise with Typescript/Python
Experience leading technical initiatives and shipping scalable, high-performance systems to support web and mobile applications
Strong knowledge of modern back-end tooling
Strong knowledge of bash scripting and linux/unix commands
A passion for creating fast, optimized and elegant solutions to difficult problems
Expertise with AI code generation tools

Job Responsibility

Lead the development, optimization and expansion of core backend services
Drive best practices in performance, security, and scalability as our client scales rapidly
Work closely with Product, Design and Front-end teams to deliver seamless, intuitive user experiences
Own key architectural decisions, mentoring engineers, and elevating back-end excellence across the company
Build out data-driven services and systems to improve the customer experience
Mentor an influence engineering culture, fostering innovation and technical ownership within the team

What we offer

equity

Fulltime

Back-End Developer

Start.io is a mobile marketing and audience platform. Start. io empowers the mob...

Location

Salary:

Not provided

Start.io

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Computer Science or equivalent practical experience
2-3 years of professional Java development experience - Must
Proven track record in designing and delivering complex distributed systems and microservices (Docker, Kubernetes)
Strong understanding of scalability, concurrency, and performance optimization challenges
Hands-on experience with CI/CD tools and automated build/deployment pipelines
Proficiency in Spring & Spring Boot frameworks
Excellent communication skills and the ability to influence technical direction across teams
Experience running applications on Kubernetes, with a focus on designing services that scale efficiently and consume resources effectively (rather than cluster administration)
Ability to measure and improve application performance using profiling, benchmarking, and APM tools (e.g., JFR, JMeter, Micrometer, New Relic, Datadog)

Job Responsibility

Design and develop highly scalable, modular backend applications and APIs using Java and Spring Boot
Own the full development lifecycle — from requirements analysis, design, coding, and testing to deployment and monitoring in production
Lead initiatives to improve system scalability, performance, and security
Collaborate closely with Product, Algo, DevOps, BI, and Marketing to deliver integrated, business-driven solutions
Ensure observability through robust logging, metrics, and alerting with tools like Prometheus, Grafana, Kibana
Drive adoption of engineering best practices, code quality standards, and technical documentation
Mentor and guide junior developers, fostering knowledge sharing and continuous improvement

Back-End Senior Developer

We are looking for a highly talented and motivated senior engineer to join our R...

Location

United States , Scottsdale, Arizona

Salary:

Not provided

Sky Republic

Expiration Date

Until further notice

Requirements

5+ years’ experience in back-end software development
Desire and ability to rapidly learn new technologies, put them in practice with tough deadlines, and work through challenging problems
Proficient with agile (Scrum/Kanban/XP) software development methodology and continuous delivery techniques and tools (Jenkins, Git, Jira etc.)
Familiar with cloud service development ecosystem (Amazon AWS, Google Cloud Platform, Microsoft Azure)
Practical development experience with some of the following technologies: Concurrent and strongly typed programming language such as Golang (preferred), C++, Java
REST API and JSON schemas
Linux container technologies (Docker, Kubernetes, etc.)
SQL databases (PostgreSQL, MySQL, Oracle)
Information Security concept and cryptography theory
Middleware software technologies (Apache Service Mix, IBM WebSphere, Mulesoft, WSO2 etc.)

Job Responsibility

Contribute to a highly creative and experienced team in an agile and collaborative environment
Participate in all phases of development including design, coding, deployment, testing, documentation and maintenance of Sky Republic solutions
Apply software development best practices such as unit testing, code review, test automation and continuous delivery to produce high quality software
Work with various stakeholders and customers to develop the Sky Republic offering and ensure its adoption

What we offer

Attractive compensation (salary + bonus + equity)
Medical, Dental, Vision, 401K
Flexible working hours

Fulltime

Senior Back End Developer

As a Senior Back-End Developer, you will be a key contributor to the design, dev...

Location

United States , Boston

Salary:

Not provided

Pixels 360

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Computer Science, Engineering, or a related field
5 years of experience in back-end development, with proficiency in [mention specific back-end languages, frameworks, and technologies relevant to your stack]
Strong understanding of software architecture, design patterns, and best practices
Excellent problem-solving skills and attention to detail
Excellent communication and collaboration skills

Job Responsibility

Back-End Development: Design and implement scalable, high-performance server-side applications
Database Management: Develop and optimize database schemas, queries, and performance tuning to ensure efficient data storage and retrieval
API Development: Build and maintain robust APIs for seamless integration with front-end systems and third-party services
Collaboration: Work closely with front-end developers, product managers, and other stakeholders to ensure seamless integration of front-end and back-end components
Code Reviews: Conduct and participate in code reviews to maintain code quality, adhere to best practices, and promote knowledge sharing within the team
Scalability: Architect and implement solutions that can handle high levels of traffic and data volume, ensuring the scalability of our systems
Problem Solving: Identify and address technical challenges, troubleshoot issues, and implement effective solutions

Typescript (back-end) engineer

TypeScript (Back-End) Engineer with Crypto/Digital Assets Experience – New York ...

Location

United States , New York

Salary:

Not provided

Orbis Consultants

Expiration Date

Until further notice

Requirements

Several years of engineering experience in fast-paced teams that experienced growth in product usage and team size
A love for clean and elegant code
Experience driving large technical innovations with deadlines and multiple developers
Keen learner with a continuous improvement mindset
Familiarity with their tech stack: TypeScript, Postgres, Prisma, GraphQL
Ideally, Crypto/Digital Asset experience or similar

Job Responsibility

Shipping new features
Architecting high-performance solutions to help customers operate at scale
Collaborating with the product/design team

What we offer

Unlimited PTO
High-end equipment: M3 MacBooks and a work-from-home stipend
Learning stipend
Top-notch healthcare: Offering the best available Platinum PPO and similar plans with the most options and lowest deductibles

Fulltime

Senior Full-Stack Developer (Back-End Focus)

We’re looking for a talented and driven Full-Stack Developer to join our dynamic...

Location

Salary:

Not provided

gamdom

Expiration Date

Until further notice

Requirements

Proven experience as a Full-Stack Developer with a backend focus
Strong expertise in: React.js for scalable UI development
Node.js & Express for backend services
PostgreSQL for relational database design and management
MUI for consistent UI/UX design
WebSockets (socket.io) for real-time communication
Strong problem-solving and analytical skills
Ability to work in a fast-paced, collaborative environment
Excellent communication skills (verbal & written)
Adaptability and eagerness to learn new technologies

Job Responsibility

Frontend Development: Build and maintain user interfaces with React.js and MUI for responsive, consistent design
Backend Logic: Develop robust server-side functionality with Node.js and Express
Database Management: Design and optimize schemas and queries using PostgreSQL
Real-Time Features: Implement live updates and streaming with WebSockets (socket.io)
Collaboration: Work closely with product managers, designers, and other engineers to deliver high-quality features
Quality & Performance: Troubleshoot issues, write unit/integration tests, and optimize performance for scalability
Continuous Learning: Stay up-to-date with modern tools, frameworks, and best practices

What we offer

Fully remote - work from anywhere in the world
Flexible schedule
30 days of paid time off
Equipment allowance

Fulltime

Back-end Developer

Location

Salary:

Not provided

Ennova Research

Expiration Date

Until further notice

Requirements

Excellent knowledge of object-oriented design principles and Web programming
Excellent of Java, Java EE, Spring Framework, Hibernate
Good knowledge of RDBMS
Good knowledge of CI/CD
Excellent predisposition to work in teams
Excellent problem solving skills
Good knowledge of the English language
Good knowledge of the Agile methodology
Ability to collaborate well with other teams (eg back-end development or UI/UX design)

What we offer

Professional growth opportunities
Training program
Teamwork and participation in team building activities
A dynamic, young, creative and stimulating environment
Open-minded and multicultural work environment
Experience with national and international clients

Fulltime

Back-end Web Developer

Robert Half Technology is currently seeking a Back-end Web Developer for an exce...

Location

United States , Greenville

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

2+ years direct web development and project implementation experience
working knowledge of current web development languages - PHP, Ruby, Python or Java
strong knowledge of compatibility and cross-browser issues
a real passion for the end-to-end solutions that drive the user experience and customer happiness
experience caring for the technical needs of sites, apps and integrations with high volume traffic
deep understanding of how a mobile user experience differs from the experience on a web or other application
hands-on experience with one of the following server-side languages: RoR or PHP

Job Responsibility

drive and code solutions using creative solutions
collaborate with key partners to deliver on time tested and reusable code in a rapidly changing environment
identify business needs and adapt solutions that align with the company goals
work through complex business processes and create simple solutions integrating best of breed tools
work with leadership and others to find the right solutions

What we offer

medical insurance
vision insurance
dental insurance
life and disability insurance
401(k) plan

Back-end Developer

Nethive SPA

Location:
Italy , Padova

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 25, 2025

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Nethive SPA

Location:Italy , Padova

Category:IT - Software Development

Contract Type:Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:December 25, 2025

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December 25, 2025