Senior Backend Engineer Job at Uncapped (Warsaw)

Senior Backend Engineer

As a Senior Backend Engineer, you will play a crucial role in leading the develo...

Location

United States

Salary:

153000.00 - 188000.00 USD / Year

Corelight

Expiration Date

Until further notice

Requirements

Strong appreciation and support for our core values: low ego results, tireless service, and applied curiosity
5+ years of professional software development experience
Experience building REST APIs / GraphQL to support a rich data-heavy visual user interface
Experience using AWS Services (Lambda, AppSync, API Gateway) or equivalent
Experience with Python, Java/Scala and/or Go
Knowledge of Relational and NoSQL databases
Experience adopting & using Agile development methodologies
Excellent communication skills
Bachelor's degree in Computer Science or related fields, or equivalent experience

Job Responsibility

Work in an Agile development team to design and deliver service features end-to-end from design to production deployment and monitoring
Design, develop and operate scalable, elastic and secure microservices based on serverless architectures
Design, develop and maintain robust and scalable Machine Learning and Data Analytics pipelines
Build REST APIs / GraphQL services to interface with large datasets and analytics using AWS technologies and services like AWS Lambda, API Gateway, DynamoDB, S3, and Cloudwatch
Evangelize and drive adoption of software development best practices in code health, quality, test stability and maintainability

What we offer

Equity and additional benefits
Commission-based or discretionary bonus

Fulltime

Senior Backend Software Engineer

Location

India , Bengaluru

Salary:

Not provided

Atlassian

Expiration Date

Until further notice

Requirements

6+ years of experience building and developing backend applications
Bachelor's or Master's degree with a preference for Computer Science degree
Experience crafting and implementing highly scalable and performant RESTful micro-services
Proficiency in any modern object-oriented programming language (e.g., Java, Kotlin, Go, Scala, Python, etc.)
Fluency in any one database technology (e.g., RDBMS like Oracle or Postgres and/or NoSQL like DynamoDB or Cassandra)
Demonstrated ability to design and operate systems that deliver high availability and unwavering reliability for our customers
Real passion for collaboration and strong interpersonal and communication skills
Broad knowledge and understanding of SaaS, PaaS, IaaS industry with hands-on experience of public cloud offerings (AWS, GCP, Azure)
Familiarity with cloud architecture patterns and an engineering discipline to produce software with quality

Job Responsibility

Design, develop, and maintain robust backend systems and components focused on proactive and reactive incident management and post-incident management
Be part of an amazing open and collaborative work environment with other experienced engineers, process engineers, architects, and TPMs
Review code with best practices of readability, testing patterns, documentation, reliability, security, and performance considerations in mind
Leverage data to generate actionable insights that drive continuous improvements in backend performance and incident management processes
Mentor and level up the skills of your teammates by sharing your expertise in formal and informal knowledge sharing sessions
Ensure full visibility, error reporting, and monitoring of high performing backend services
Participate in Agile software development including daily stand-ups, sprint planning, team retrospectives, show and tell demo sessions

Fulltime

Senior LLM Backend Engineer

We are looking for a Senior Backend Engineer with a strong focus on Large Langua...

Location

Spain

Salary:

Not provided

Bark

Expiration Date

Until further notice

Requirements

Extensive production experience with Python in backend engineering
Proven experience integrating LLMs into applications via APIs or SDKs
Strong experience building and maintaining APIs for LLM-based features
Strong experience building and maintaining event-driven workflows
Strong experience building and maintaining business logic that consumes AI outputs
Strong experience building and maintaining integrations with 3rd party AI/ML platforms
Solid SQL and NoSQL experience (especially in AI data pipelines)
Production experience with Docker, ideally with Kubernetes or AWS Fargate/ECS/EKS
Experience deploying and maintaining AI services in cloud environments
Strong organisational skills and ability to deliver in a fast-paced, product-focused environment

Job Responsibility

Work with product managers to understand user needs and translate them into AI-powered functionality
Design and build APIs, services, and workflows that integrate LLMs (both proprietary and open-source)
Implement prompt engineering, RAG pipelines, and model fine-tuning where required
Optimise AI inference performance, scalability, and cost-effectiveness
Ensure AI features meet high standards for security, reliability, and maintainability
Collaborate with other engineers to integrate AI features seamlessly into the wider system
Stay on top of emerging LLM technologies and best practices, running experiments and sharing knowledge across the team

What we offer

Fully remote working
Personal annual L&D Budgets with 600€ to spend on your development
Being at the forefront of an industry with new and exciting problems to solve

Fulltime

Senior Software Engineer, Backend

Kiddom is a groundbreaking educational platform that promotes student equity and...

Location

United States , San Francisco

Salary:

160000.00 - 220000.00 USD / Year

Kiddom

Expiration Date

Until further notice

Requirements

BS or MS in Computer Science or a related field
6+ years professional software engineering experience
Experience scaling integration systems
Proficiency in working with databases (SQL & NoSQL) such as PostgreSQL, MySQL, MongoDB, or Redis
Experience with cloud platforms like AWS, GCP, or Azure, and containerization tools like Docker and Kubernetes
Experience with microservices architecture and distributed systems
Strong knowledge of design patterns and software engineering best practices
You've been through the planning, launching and refactoring phases of code you wrote
Excellent problem solving and debugging skills
Ability to work as part of a collaborative team in a fast-paced environment

Job Responsibility

Design, develop, and maintain backend services, APIs, and databases
Ensure the scalability, security, and performance of backend systems
Collaborate with frontend engineers, product managers, and other stakeholders to deliver high-quality features
Optimize applications for performance, reliability, and scalability
Conduct code reviews and provide mentorship to junior engineers
Troubleshoot and resolve production issues, ensuring system uptime and reliability
Work with our customers to troubleshoot issues and bugs and also help with Kiddom onboarding

What we offer

The opportunity to make a measurable impact in K-12 education
Competitive salary and equity in a hyper-growth, mission-driven organization
Full health benefits: medical, dental, and vision
Flexible vacation policy
401k
An inclusive, positive team culture
A passionate, collaborative team obsessed with building transformative education technology
Meaningful equity
Health insurance benefits: medical (various PPO/HMO/HSA plans), dental, vision, disability and life insurance
One Medical membership (in participating locations)

Fulltime

Senior Backend Engineer

Build the execution layer powering the next generation of intelligent systems. W...

Location

United States , New York

Salary:

Not provided

Orbis Consultants

Expiration Date

Until further notice

Requirements

Strong backend/system design experience, with production ownership
Proficiency in Rust (or another systems language with willingness to ramp up)
Solid SQL skills and experience with PostgreSQL or similar relational DBs
Experience with distributed systems patterns: messaging, retries, idempotency, state
Familiarity with Redis, real-time delivery (SSE/WebSockets), and pub/sub systems (Kafka or NATS)
Understanding of auth/authz, multi-tenancy, and secure API design
Comfortable working in a fast-paced, on-site environment with tight feedback loops

Job Responsibility

Design and build Rust-first backend services for executing and managing graph/DAG-based workflows
Own job orchestration systems with multiple execution modes: blocking, streaming, fire-and-forget
Implement core features for idempotency, replay, backpressure, and retries
Strengthen platform-wide tenant isolation, access control, and security
Optimise PostgreSQL schemas, indexing, and query performance
own data migrations
Ship reliable, observable systems with strong telemetry and operational tooling
Partner with product, frontend, and data teams to ship production-ready features quickly

What we offer

Equity
Full benefits & perks
Visa sponsorship available

Fulltime

Senior Software Engineer - Backend

We build simple yet innovative consumer products and developer APIs that shape h...

Location

United States , San Francisco

Salary:

180000.00 - 270000.00 USD / Year

Plaid

Expiration Date

Until further notice

Requirements

5+ years of experience with extensive experience in software engineering with a proven track record of shipping successful projects
Experience with MySQL or other relational databases
Experience working with microservices
Excellent coding, testing, and system design skills
Prior experience with cross functional collaboration, communication and project management skills
Demonstrated leadership skills and the ability to mentor and guide junior engineers
Ability to work with operations, product, design, and data science

Job Responsibility

Design & Development: Build and maintain backend services with a focus on performance, reliability and scalability
Collaboration: Work closely with product managers and other stakeholders to define and implement new features that meet product and customer needs
Code Quality: Write clean, maintainable and efficient code
Testing & Debugging: Develop automated tests to ensure the quality and reliability of the codebase. Troubleshoot and resolve issues
Engage in hands-on coding and architectural design, setting and maintaining high technical standards for a high performing team
Grow the team via mentorship and leadership, reviewing technical documents and code changes

What we offer

medical
dental
vision
401(k)

Fulltime

Senior Software Engineer - Backend

We build simple yet innovative consumer products and developer APIs that shape h...

Location

United States , New York

Salary:

180000.00 - 270000.00 USD / Year

Plaid

Expiration Date

Until further notice

Requirements

5+ years of experience with extensive experience in software engineering with a proven track record of shipping successful projects
Experience with MySQL or other relational databases
Experience working with microservices
Excellent coding, testing, and system design skills
Prior experience with cross functional collaboration, communication and project management skills
Demonstrated leadership skills and the ability to mentor and guide junior engineers
Ability to work with operations, product, design, and data science

Job Responsibility

Design & Development: Build and maintain backend services with a focus on performance, reliability and scalability
Collaboration: Work closely with product managers and other stakeholders to define and implement new features that meet product and customer needs
Code Quality: Write clean, maintainable and efficient code
Testing & Debugging: Develop automated tests to ensure the quality and reliability of the codebase. Troubleshoot and resolve issues
Engage in hands-on coding and architectural design, setting and maintaining high technical standards for a high performing team
Grow the team via mentorship and leadership, reviewing technical documents and code changes

What we offer

medical
dental
vision
401(k)

Fulltime

Senior Software Engineer (Backend)

Tekmetric is looking for a Senior Software Engineer (Backend) to take part in th...

Location

Salary:

Not provided

Tekmetric

Expiration Date

Until further notice

Requirements

5+ years software engineering experience
Experience with Java and SQL databases (2+ years)
Enjoy working in fast moving and dynamic environments
High standards and a strong work ethic
Strong product sense and communication skills
Experience working cross-functionally and can work within ambiguity
Enjoy bringing innovation and impact to customers

Job Responsibility

Design and implement scalable services and applications that enable positive user experiences and measurable business growth
Provide implementation estimates and evaluations of different solutions
Collaborate with and across agile teams to design, develop, test, and support technical solutions
Ensure application performance, uptime, and scale, maintaining high standards of code quality and thoughtful application design
Manage the end-to-end life cycle on the development of new features
Provide technical leadership, mentorship and growth to junior team members as we scale

What we offer

Flexibility of remote work
Competitive base salaries
Generous Paid Time Off
Paid maternity, parental bonding, and medical leave
Comprehensive health benefits (Medical, Dental, Vision, Prescription)
Free, confidential counseling through BetterHelp
401(k) Retirement Savings Plan with 100% employer match on contributions up to 6%
Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA)
Life and Accidental Death & Dismemberment (AD&D) Insurance
Up to $60/month toward fitness or mental health

Senior Backend Engineer

Uncapped

Location:
Poland; United Kingdom , Warsaw ▼
London

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
February 18, 2026

Looking for more opportunities? Search for other job offers that match your skills and interests.

Similar Jobs for Senior Backend Engineer

Senior Backend Engineer

Senior Backend Software Engineer

Senior LLM Backend Engineer

Senior Software Engineer, Backend

Senior Backend Engineer

Senior Software Engineer - Backend

Senior Software Engineer - Backend

Senior Software Engineer (Backend)

Senior Backend Engineer

Uncapped

Location:Poland; United Kingdom , Warsaw ▼London

Category:IT - Software Development

Contract Type:Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:February 18, 2026

Looking for more opportunities? Search for other job offers that match your skills and interests.

Similar Jobs for Senior Backend Engineer

Senior Backend Engineer

Senior Backend Software Engineer

Senior LLM Backend Engineer

Senior Software Engineer, Backend

Senior Backend Engineer

Senior Software Engineer - Backend

Senior Software Engineer - Backend

Senior Software Engineer (Backend)

Location:
Poland; United Kingdom , Warsaw ▼
London

Category:
IT - Software Development

Contract Type:
Not provided

Job Posted:
February 18, 2026