Back-End Engineer 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

New

Back-End Engineer

We are looking for a Back-End Engineer (Java) to take end-to-end ownership of ba...

Location

Vietnam , Hanoi

Salary:

Not provided

Ataccama

Expiration Date

Until further notice

Requirements

You see challenges as opportunities
You’re not afraid of complex applications
You don’t mind doing research when engines require complex algorithms and data structures
You enjoy constantly learning new things and sharing your knowledge with others

Job Responsibility

Build a truly self-service application for business users
Find ways to automate most activities users must do
Create a product that contains all the features enterprise solutions must-have
Take end-to-end ownership of the whole product
Understand data management and write solutions suitable for DM domains
Cooperate on software architecture
Solve complex problems in data management, with an emphasis on performance
Write clean, well-designed, documented, and testable code
Take responsibility for your work, from code to production
Take part in discussions and decisions impacting how our product is designed and written

What we offer

Full compensation during the probation period
13th salary
15 days of vacation
Premium Healthcare
Online company language courses
Online courses & company access to Udemy

Staff Software Engineer, Back-end

Affirm is reinventing credit to make it more honest and friendly, giving consume...

Location

Spain

Salary:

101000.00 - 131000.00 EUR / Year

Affirm

Expiration Date

Until further notice

Requirements

8+ years of experience designing, developing and launching backend systems at scale using languages like Python or Kotlin
Extensive track record of developing highly available distributed systems using technologies like AWS, MySQL, Spark and Kubernetes
Strong verbal and written communication skills that support effective collaboration with our global engineering team
Experience delivering major features, system components or deprecating existing functionality in a system through the definition of a technical and execution plan
Write high quality code that is easily understood and used by others
On-Call Rotation

Job Responsibility

Set technical strategy for your team on a year-long time scale, and help your team tie it together with critical, business-impacting projects
Collaborate across teams in the product development lifecycle by collaborating with product management, design & analytics to ensure technical sustainability, risks and trade-offs are well understood and managed
Act as a force-multiplier for your team through your definition and advocacy of technical solutions and operational processes
Take ownership of your team’s operations and availability by ensuring you have the right monitoring, triage rotations, playbooks, polcities, testing and alerting in place to support “keep the lights on” & on-call efforts
Foster a culture of quality and ownership on your team by setting code review and design standards for your team, and advocating for them beyond your team through your writing and tech talks
Help develop talent on your team by providing feedback and guidance, and leading by example

What we offer

Flexible Spending Wallets for tech, food and lifestyle
Away Days - wellness days to take off work and recharge
Learning & Development programs
Parental benefit
Employee Resource & Community Groups
Health care coverage - Affirm covers all premiums for all levels of coverage for you and your dependents
Flexible Spending Wallets - generous stipends for spending on Technology, Food, various Lifestyle needs, and family forming expenses
Time off - competitive vacation and holiday schedules allowing you to take time off to rest and recharge
ESPP - An employee stock purchase plan enabling you to buy shares of Affirm at a discount
Visa sponsorship

Fulltime

Software Engineer (back-end)

You’ll join the team primarily responsible for the availability, scalability and...

Location

Ireland

Salary:

Not provided

Tines

Expiration Date

Until further notice

Requirements

Roughly 3-5 years as a professional software engineer
Direct experience of building and delivering software using a high-level programming language
Comfortable working at the level of technical complexity of adding features to a small command-line app
Foundational skills and knowledge needed to succeed
Curiosity and an eagerness to learn
Excited to pitch in anywhere when needed
Ability to spend time and energy where it will make a difference
Work healthily and sustainably
Treat colleagues with kindness and respect

Job Responsibility

Work closely with colleagues to build the right solutions to the problems our customers face
Make valuable changes in our codebase
Write and review high quality, well tested code
Identify areas for improvement, both in our codebase and in how we work
Own the problems you’re solving - and the software you write to solve them - all the way to production and beyond
Share your knowledge with other engineers in our team, through code reviews, pairing sessions and team discussions

What we offer

Competitive salary
Startup equity & extended exercise window
Matching retirement plans
Home office setup
Private healthcare plans
25 days annual leave
Extra company holidays
Generous parental leave programs
Flexibility in how and where you work
Phone and home Internet allowance

Back-end engineer

We are seeking a skilled Back-End Engineer with strong knowledge of Python, Java...

Location

Israel

Salary:

Not provided

Smartech

Expiration Date

Until further notice

Requirements

BSc. in Computer Science, or a related field
5 years of hands on experience in developing backend applications with containerization (Docker) and orchestration (Kubernetes)
5 years of hands-on experience with Python (e.g., Flask, FastAPI, Django) and Java(e.g., Spring Boot, JEE)
Understanding of RESTful APIs, microservices, and system integration
Familiarity with databases (SQL, MongoDB, and/or NoSQL)
Strong foundation in computer science concepts (data structures, algorithms, design patterns)
Experience with Git, CI/CD pipelines, and cloud environments (AWS)

Job Responsibility

Design, develop, and maintain back-end services and APIs using Python and Java over the Spring Boot infrastructure
Build and deploy microservices with Docker and Kubernetes on AWS
Collaborate with front-end engineers to integrate APIs and ensure seamless user experiences
Contribute to front-end development when needed, providing guidance on performance and maintainability
Work with cloud-native tools and AWS services (e.g., Lambda, ECS/EKS, RDS, DynamoDB, S3,CloudWatch)
Implement best practices for security, scalability, and observability indistributed systems
Participate in code reviews, testing, CI/CD pipelines, and DevOps practices
Monitor and optimize system performance, ensuring high availability and resilience

Back-end Software Engineer

With thousands of active users, we are the most popular QR code payment among re...

Location

Italy , Castegnato, Brescia

Salary:

35000.00 - 60000.00 / Year

Qodeup

Expiration Date

Until further notice

Requirements

6+ years of experience
Deep knowledge of APIs, micro-services architecture and functional programming
Experience: you have directly managed at least one complete project, fully functioning and online, in micro-services with distributed database, in Google Cloud or AWS
Flexibility: ability to adapt within a fast changing environment
Passion: you love what you do and you feel excited about what you do
Curiosity and initiative: you love attempting new adventures and testing new ideas
Languages: good proficiency in the English language

Job Responsibility

Work in Node.js + express/fastify, APIs and Microservices
Work autonomously
Learn from others and suggest ideas to improve our processes

What we offer

Real impact: you are free to drive your career and have an impact on the company
Amazing team: you can learn from some of the funniest and most talented people you will ever meet
Remote working: you are free to work from anywhere because our company works 100% remotely

Fulltime

Principal Back-End Engineer

We’re hiring a Principal Platform Engineer to lead backend and platform architec...

Location

Salary:

Not provided

PhantomBuster

Expiration Date

Until further notice

Requirements

8–12+ years in backend/infrastructure engineering, ideally in SaaS at scale
Proven track record in a Staff, Principal, or senior technical leadership role
Experience leading large, distributed, or high-complexity systems
Expert in TypeScript / Node.js, PostgreSQL, Redis, and modern caching/queuing systems
Strong cloud experience (AWS preferred), infrastructure-as-code, containers, and CI/CD pipelines
Solid grounding in system design, reliability, and security principles
Strong observability skills (metrics, tracing, logging)
Familiarity with modern AI/ML stacks: vector databases, embeddings, prompt engineering, LLM-based tools
Exceptional communicator, able to explain complex tradeoffs clearly
Pragmatic decision-maker balancing speed, quality, and sustainability

Job Responsibility

Anticipate product and infrastructure needs for growth and reliability
Set the bar for testing, observability, performance, and security
Drive code reviews on critical paths, preventing bugs and debt from reaching production
Champion AI-assisted engineering: from code generation and testing to debugging
Establish guardrails for safe and effective use of AI (human review, bias detection, security)
Identify opportunities to leverage AI internally (developer productivity, monitoring, anomaly detection)
Mentor engineers and tech leads, helping them level up
Share knowledge through workshops, design sessions, and documentation
Partner with Product, Frontend, and AI squads to ensure seamless integration and zero-downtime releases
Lead cross-functional initiatives on reliability, cost optimization, or security

What we offer

Fully remote working environment
€40/month for your Internet connection
Flexible working time
Home office budget up to €1500
100% of an Alan Blue subscription
Lunch vouchers - €8 (50% The Phantom Company) / worked day
Partnership with MokaCare
€70 a month benefit for entertainment expenses
Book Allowance and Sharing Program

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

Back-End Engineer

JFrog

Location:
Israel , Netanya ▼
Tel Aviv

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 26, 2025

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JFrog

Location:Israel , Netanya ▼Tel Aviv

Category:IT - Software Development

Contract Type:Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:December 26, 2025

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