Mid-level Backend Engineer Jobs

New

Mid-level Fullstack Engineer

We are looking for highly talented and driven software engineers who take pride ...

Location

United States , New York

Salary:

140000.00 USD / Year

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or equivalent experience)
Experience working at a similar level in a mature Engineering team
Technical expertise with at least one popular backend language (ideally Java or Kotlin)
Experience with ElasticSearch
Familiarity with frontend frameworks such as React
Proven track record of demonstrable impact
Highly driven and proactive
Meticulous with high standards and obsessive attention to detail

Job Responsibility

Design solutions and contribute to architectural vision
Ship working code primarily with React, Kotlin microservices, Postgres, and Ruby on Rails
Deploy and iterate using CI/CD tools like CircleCI and Spinnaker
Build competency and use L&D budget for technical development
Maintenance and troubleshooting of services

What we offer

Potential for bonus

Fulltime

New

Mid-level Backend Engineer

We are looking for highly talented and driven Backend Software Engineers who tak...

Location

Portugal

Salary:

Not provided

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or equivalent experience)
3+ years of experience working at a similar level in a mature Engineering team
Technical expertise with at least one programming language (Kotlin, Ruby)
Experience with relational databases
Proven track record of demonstrable impact in previous roles
Highly driven and proactive
Meticulous with high standards and obsessive attention to detail

Job Responsibility

Design solutions to business problems and contribute to architectural vision
Ship working code (React frontend, Kotlin microservices with Postgres backend, some Ruby on Rails)
Deploy and iterate frequently
Build competency and use L&D budget for technical development
Maintenance and troubleshooting of services

Fulltime

New

Mid-level Backend Engineer

We are looking for highly talented and driven software engineers who take pride ...

Location

Brazil

Salary:

Not provided

AlphaSights

Expiration Date

Until further notice

Requirements

Degree in a STEM subject (or equivalent experience)
3+ years of experience working at a similar level in a mature Engineering team
Technical expertise with at least one programming language (Kotlin, Ruby)
Experience with relational databases
Proven track record of demonstrable impact
Highly driven and proactive
Meticulous with high standards and obsessive attention to detail

Job Responsibility

Design solutions to business problems and contribute to architectural vision
Ship working code primarily with React, Kotlin microservices, Postgres, Ruby on Rails, and Python
Deploy and iterate using CI/CD tools like CircleCI and Spinnaker
Build competency through learning and development
Maintenance and troubleshooting of services

What we offer

L&D budget to fast-track development of specific technical competencies

Fulltime

PHP/Kotlin Backend Engineer - Roaming

Monta is looking for a PHP/Kotlin Backend Engineer to build the robust, scalable...

Location

Germany , Berlin

Salary:

Not provided

Creandum

Expiration Date

Until further notice

Requirements

Mid-level or above Backend Experience: solid experience building scalable backend systems
Proficient in Kotlin (Micronaut) and PHP (Laravel), or strong experience in one with the ability to quickly master the other in a mixed environment
Experience working with OCPI (Open Charge Point Interface) and understand the complexities of the EV roaming ecosystem
Clear & pragmatic communicator who builds alignment fast
Authentic team player with empathy, openness, and ownership
Comfortable with AI-powered tools to accelerate your work (Claude, Gemini, Codex, etc.), with the willingness to learn more
Spoken and written English skills need to be proficient

Job Responsibility

Own the full lifecycle: Scope out requirements and plan new features in collaboration with the team, taking code from ideation to production
Cross-team execution: Work closely with Ops, Product, Frontend and other Backend teams to navigate ambiguity and ensure features integrate seamlessly
Ensure quality at speed: Perform automated validation and verification testing while supporting your teammates with thoughtful code reviews
Monitor and Maintain: Utilize tools like Grafana and Loki to monitor system health, ensuring reliability for the drivers who depend on us
Own outcomes in a high-trust environment where we value execution over perfection
Navigate ambiguity and shifting priorities — keeping momentum when it matters most
Celebrate wins and learn fast from misses alongside an ambitious, diverse team
Push boundaries with courage and resilience while staying true to our DNA

What we offer

A yearly education budget and extra days off to use it
A friendly and social company culture with movie nights, Friday bars, pub crawls, and more
Free lunch every day
Pension & health coverage to keep you secure for today and tomorrow
Paid parental leave to support life’s big moments
Warrants program - be part of our growth story
Flexible working hours
A one month electric vehicle introduction program (plus access to a shared company EV)

Fulltime

Principal Backend Engineer, Forward Deployed

As a Principal Forward Deployed Engineer (FDE) at Invisible, you'll lead high-im...

Location

United States , Austin; New York; San Francisco Bay Area; Washington DC–Baltimore

Salary:

225000.00 - 370000.00 USD / Year

Invisible Technologies

Expiration Date

Until further notice

Requirements

12+ years of software engineering experience, including significant time spent building data, ML, or backend systems
Deep proficiency in Python with hands-on experience using Hugging Face, LangChain, OpenAI, Pinecone, and related ecosystems
Skilled in full-stack and API-based deployment patterns, including Docker, FastAPI, Kubernetes, and cloud environments (GCP, AWS)
Experienced with workflow orchestration libraries, pub/sub systems (Kafka), and schema governance
Expertise in data governance and operations, including Unity Catalog and policy management, cluster/job orchestration, data contracts and quality enforcement, Delta/ETL pipelines, and replay processes
Strong product and system design instincts — you understand business needs and how to translate them into technical architecture
Experience building usable systems from messy data and ambiguous requirements
Excellent communication and client-facing skills
you’ve led conversations with technical and non-technical stakeholders alike
Proven experience owning projects from scoping through deployment in ambiguous, high-stakes environments

Job Responsibility

Partner with delivery and executive stakeholders to scope, design, and lead implementation of AI-driven solutions
Identify transformational opportunities in messy, ambiguous workflows and turn them into repeatable systems
Lead architecture design and trade-off discussions across performance, scalability, cost, and reliability
Own projects from first discovery call through full deployment — including client-facing delivery, internal coordination, and post-launch iteration
Build shared infrastructure, reusable components, and internal playbooks to level-up the team
Coach and mentor mid-level engineers and help shape the culture of forward-deployed AI engineering at Invisible

What we offer

bonus
equity

Fulltime

Senior Backend Engineer

As a Senior Backend Engineer, you will play a critical role in designing and bui...

Location

India , Bangalore

Salary:

Not provided

Ethos

Expiration Date

Until further notice

Requirements

7+ years of full-time engineering experience, ideally in high-scale, high-complexity environments
Demonstrated experience designing and delivering backend architectures from the ground up
Strong understanding of distributed systems, API design, and performance tradeoffs
Hands-on engineering experience with several of the following: TypeScript, Go, Python, PostgreSQL, Kubernetes, React, AWS
Skilled in software engineering best practices: design patterns, testing strategies, observability, code quality, and secure development
Excellent verbal and written communication skills
able to explain complex ideas to technical and non-technical stakeholders
Proven ability to lead cross-team initiatives, drive alignment, and influence technical direction
High degree of ownership, proactive problem-solving, and the ability to operate with urgency when needed
Strong CS fundamentals including data structures, algorithms, and understanding of security principles and common attack vectors

Job Responsibility

Lead the design, development, and maintenance of complex backend systems and distributed services
Partner cross-functionally with engineers, PMs, designers, and non-technical stakeholders to drive projects from concept to launch
Architect, build, and evolve API frameworks and platform capabilities used across multiple teams
Produce clean, modular, well-tested, and high-performing code and abstractions
Identify, diagnose, and resolve performance, scalability, and reliability issues
Champion engineering best practices and drive consistency across the codebase
Participate in—and help elevate—the team’s code review process
Clearly communicate technical decisions, tradeoffs, and project updates to diverse audiences
Mentor and support junior and mid-level engineers, fostering a culture of growth and high performance
Take end-to-end ownership of major projects, including requirements clarification, design, execution, and rollout

Fulltime

Senior Backend Engineer

As a Backend Engineer, you'll work across the stack and be responsible for build...

Location

Singapore , Singapore

Salary:

Not provided

Ethos

Expiration Date

Until further notice

Requirements

7+ years of full-time engineering experience, ideally in high-scale, high-complexity environments
Demonstrated experience designing and delivering backend architectures from the ground up
Strong understanding of distributed systems, API design, and performance tradeoffs
Hands-on engineering experience with several of the following: TypeScript, Go, Python, PostgreSQL, Kubernetes, React, AWS
Skilled in software engineering best practices: design patterns, testing strategies, observability, code quality, and secure development
Excellent verbal and written communication skills
able to explain complex ideas to technical and non-technical stakeholders
Proven ability to lead cross-team initiatives, drive alignment, and influence technical direction
High degree of ownership, proactive problem-solving, and the ability to operate with urgency when needed
Strong CS fundamentals including data structures, algorithms, and understanding of security principles and common attack vectors

Job Responsibility

Lead the design, development, and maintenance of complex backend systems and distributed services
Partner cross-functionally with engineers, PMs, designers, and non-technical stakeholders to drive projects from concept to launch
Architect, build, and evolve API frameworks and platform capabilities used across multiple teams
Produce clean, modular, well-tested, and high-performing code and abstractions
Identify, diagnose, and resolve performance, scalability, and reliability issues
Champion engineering best practices and drive consistency across the codebase
Participate in—and help elevate—the team’s code review process
Clearly communicate technical decisions, tradeoffs, and project updates to diverse audiences
Mentor and support junior and mid-level engineers, fostering a culture of growth and high performance
Take end-to-end ownership of major projects, including requirements clarification, design, execution, and rollout

Fulltime

Senior Software Engineer - Treasury

The Treasury team is a team of full-stack engineers that are building thoughtful...

Location

United States; Canada , San Francisco; New York; Portland

Salary:

166600.00 - 208300.00 USD / Year

Mercury

Expiration Date

Until further notice

Requirements

4+ years of backend or full-stack development experience
Knowledge of or excitement to learn Haskell
Domain knowledge of RIA and broker-dealer systems that support both individual securities (equities, fixed income) as well as ETFs and mutual funds
Experience leading product and/or infrastructure projects that fulfill State, SEC, and/or FINRA regulatory requirements with a track record of success
Comfortable mentoring both junior and mid-level engineers
Communicates and collaborates effectively with peers and cross-functional counterparts by being helpful and engaged

Job Responsibility

Lead high-impact, cross-functional projects across Treasury engineering, compliance, operations, and risk teams to build stable and scalable systems and processes
Establish a compliant standard for retention, audit trails, and reporting across Treasury
Collaborate with product, compliance, design, and operations to ship thoughtful features for our customers and internal users
Feel a strong sense of product ownership and actively seek responsibility – we want someone excited to help shape and build Mercury’s future
Join a team of experienced and junior product engineers managing billions of dollars of customer assets

What we offer

base salary
equity (stock options)
benefits
reasonable accommodations throughout the recruitment process for applicants with disabilities or special needs

Fulltime

Mid-level Backend Engineer

AlphaSights

Location:
United Kingdom, London

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
December 17, 2025

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

Similar Jobs for Mid-level Backend Engineer

Mid-level Fullstack Engineer

Mid-level Backend Engineer

Mid-level Backend Engineer

PHP/Kotlin Backend Engineer - Roaming

Principal Backend Engineer, Forward Deployed

Senior Backend Engineer

Senior Backend Engineer

Senior Software Engineer - Treasury

Mid-level Backend Engineer

AlphaSights

Location:United Kingdom, London

Category:IT - Software Development

Contract Type:Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:December 17, 2025

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

Similar Jobs for Mid-level Backend Engineer

Mid-level Fullstack Engineer

Mid-level Backend Engineer

Mid-level Backend Engineer

PHP/Kotlin Backend Engineer - Roaming

Principal Backend Engineer, Forward Deployed

Senior Backend Engineer

Senior Backend Engineer

Senior Software Engineer - Treasury

Location:
United Kingdom, London

Category:
IT - Software Development

Contract Type:
Not provided

Job Posted:
December 17, 2025