Jobs Backend

Project Description:

We're building a Cloud Observability platform for market leading large Germany based company with 440,000 customers worldwide.
Originally known for leadership in enterprise resource planning (ERP) software, the company has evolved to become a market leader in end-to-end enterprise application software, database, analytics, intelligent technologies, and experience management. A top cloud company with 200 million users worldwide, the company helps businesses of all sizes and in all industries to operate profitably, adapt continuously, and achieve their purpose.

Responsibilities:

• Lead sprint-based feature development for routing and collector-as-a-service platforms
• Develop Kubernetes operators using controller-runtime / Operator SDK (kubebuilder)
• Design and implement CRDs & Admission Webhooks
• Build custom OpenTelemetry Collector distributions and exporters
• Develop frontend components using React / TypeScript / Tailwind / Vite / TanStack
• Implement and maintain Istio service mesh and mTLS/OIDC/JWT security
• Integrate with Open Service Broker / Cloud Broker APIs and enterprise platform services
• Maintain CI/CD pipelines using GitHub Actions and ArgoCD
• Contribute to architecture decisions and create ADRs for major changes
• Participate in developer on-call rotation outside core hours

Mandatory Skills Description:

• Go language development
• Node.js / TypeScript development
• Kubernetes container orchestration
• OpenTelemetry (OTEL) observability
• controller-runtime / Operator SDK (kubebuilder)
• CRDs & Admission Webhooks
• GitHub Actions and ArgoCD CI/CD
• Kustomize configuration management
• Istio / Service Mesh infrastructure
• mTLS / OIDC / JWT / OAuth2 security
• PostgreSQL and Kafka
• ModelContext Protocol (MCP) AI framework
• React / Frontend Stack (TS, Tailwind, Vite, TanStack)
• Open Service Broker / Cloud Broker APIs

Nice-to-Have Skills Description:

• OTEL Collector custom distributions and exporters
• gRPC networking
• Gardener cluster lifecycle management
• GCP / Azure / AWS cloud platforms
• Prometheus / Grafana / Jaeger / Splunk monitoring
• Enterprise platform integration (BTP or similar)
• AI-assisted / spec-driven development practices
• NATS messaging, Helm, HashiCorp Vault, Kyverno, HAProxy
• Sovereign / Air-gapped architecture
• Cost Management & FinOps

We're seeking a talented .NET Developer to help shape the future of blockchain technology in innovative startup. If you're ready to make a real impact in a cutting-edge industry, we'd love to hear from you!
 

Core Competence:
 

• At least 2 years of professional experience in software development with a strong foundation in C#, ASP.NET Core, and Entity Framework.
• Proficiency in managing IIS, MS SQL, Visual Studio, and Docker environments.
• Familiarity with ODBC, LINQ, NUnit, xUnit, NuGet, and RESTful APIs, alongside Git for version control.
• Sound understanding of client-side and server-side architectures.
• Strong analytical thinking, with a structured, math or engineering-oriented mindset and a focus on delivering results.
   

Preferred Qualifications:
 

• Knowledge of ReSharper, experience with Azure, and familiarity with NoSQL databases.
• Experience with AWS and Linux system administration is an asset.
• Active participation in hackathons demonstrates innovative thinking and problem-solving skills.
• Upper-intermediate level of English for clear and effective communication in a global team.
   

What We Offer You:
 

• Competitive Compensation: Your skills and experience will be rewarded with a salary aligned with industry standards and your career ambitions.
• Innovative Work Environment: Be part of a forward-thinking FinTech startup with a culture of continuous learning, including tech talks and participation in hackathons.

• 20 paid vacation days, 3 paid sick days, and a flexible schedule for work-life balance.

   

We're looking for a motivated JavaScript developer at the junior or trainee level to join a team that builds production-grade web scrapers for enterprise clients. Your work will run on enterprise-level web data infrastructure used by some of the world's most recognizable brands - from Fortune 500 retailers like Nike to global technology companies like Philips - powering their market research, price intelligence, and competitive data pipelines.

This is a hands-on engineering role. You won't be writing toy examples - from early on you'll be building real scrapers that extract structured data at scale.

Responsibilities

- Analyze target websites using Chrome DevTools to understand DOM structure and network requests

- Write JavaScript scrapers using Cheerio and related libraries

- Craft precise CSS selectors and XPath expressions to reliably target data elements

- Use Postman to inspect APIs and reverse-engineer data endpoints where applicable

- Handle pagination, dynamic content, and common anti-scraping patterns

- Deliver clean, structured output data (JSON/CSV) per client specifications

- Maintain and update existing scrapers as target sites change

Tech stack

JavaScript, Cheerio, CSS Selectors, XPath, Chrome DevTools, Postman, Git

Requirements

- 1 year of JavaScript experience in any context (commercial, freelance, or project-based), OR currently enrolled in / recently graduated from a Software Engineering, Computer Science, or related program

- English B2 or higher - you must be able to read technical documentation and communicate with the team in English

- Understanding of HTML/DOM structure and HTTP basics

- Ability to learn independently and figure things out from documentation

Nice to have

- Any personal or academic projects involving scraping, parsing, or browser automation

- Familiarity with Node.js ecosystem

- Basic knowledge of how proxies or headless browsers work

What we offer

- Work on real client projects from day one - no synthetic tasks

- Mentorship and code review from experienced engineers on the team

- Remote-first, fully async-friendly - work from anywhere

Location: Remote, EU
Duration: Longterm
Workload: Fulltime 40 hrs
Start: ASAP
Languages: English (min. B2). German (min. C1)
Interview rounds: 2-3
Location: Remote, office possible

Responsibility for mission-critical banking systems: help build the next generation of cloud-native banking software.
You'll work with Spring, microservices and Kubernetes on systems that banks rely on, and actively shape both architecture and product.
Our client develops cloud-native banking software and is looking for a Software Developer to strengthen its development team.

Overview

• Location: Remote, office possible
• Working hours: Full-time, 40 hours per week, flexible scheduling
• Focus: Java, Spring, microservices, Kubernetes

Your responsibilities

• Further development of existing microservices, plus analysis, design and implementation of new features together with product management
• Making and justifying architecture decisions as a team
• Code reviews and technical onboarding of new team members
• Creating and maintaining automated tests
• Active support in the deployment process

Your profile

• Professional experience as a software developer in product development
• Very good knowledge of Java and the Spring Framework
• Understanding of banking processes
• Fluent German (C1) in speech and writing, as technical coordination within the team, with product management and with customers is usually conducted in German
• Experience with agile software development
• Experience with cloud-native environments

We are looking for a Python Software Engineer - Autonomous Systems to join our autonomous systems control team.

This role is a strong fit for an engineer who is comfortable with mathematics, and is interested in growing into control engineering for autonomous systems.

We consider engineers at Middle+ level.

Responsibilities:

• Develop and maintain control and decision-making algorithms for autonomous guidance
• Perform testing in simulation environment and in real life
• Analyze system behavior and logs
• Navigate through research papers and algorithm descriptions in field of autonomous systems and apply them in practice

Required qualifications:

• 3+ years of software development experience in ML, robotics, simulation, gamedev or other algorithmically intensive domains
• Strong programming skills in Python and C++
• Hands on experience with concurrent and parallel programming
• Mathematical background, including: linear algebra (vectors and matrices, coordinat systems and transformations) calculus (derivatives and integrals)

Would be an advantage:

• Control theory fundamentals
• Olympiad programming
• Signal processing
• Machine Learning
• Mavlink
• Simulation tools (Gazebo, AirSim)
• ITL, HITL testing
• X4, Betaflight, ArduPilot

What We Offer:

• Opportunity to work on cutting-edge embedded products
• Competitive salary and benefits
• Flexible working model (remote / hybrid / onsite)
• Professional growth and learning opportunities
• Collaborative and engineering-focused culture

About Us

Smart Capital Center is an end-to-end, AI-powered platform for Commercial Real Estate (CRE) investment and financial management. We power real-time underwriting, asset management, and portfolio analytics through a combination of live data, workflow automation, and AI-driven insights.

Operating at the intersection of Generative AI, finance, and real estate, we are building systems that digitize and simplify complex financial workflows.

Our clients include leading institutions such as JLL, Pacific Life Insurance Company, and KeyBank. We are a lean, high-performance team building category-defining technology in a $17 trillion industry.

To learn more about our platform and vision, please visit our website.

The Role

We are looking for a Backend Software Engineer with strong experience in building scalable systems and a deep interest in AI-powered applications.

This is a high-impact, hands-on role where you will design and build backend services, integrate AI capabilities, and develop intelligent, agent-driven workflows used in real-world production environments.

You will work closely with product, AI, and engineering teams to deliver reliable, high-performance systems and automation features.

What You Will Do

Backend Development

• Design, build, and maintain backend services using Java (Spring Boot) and Python
• Develop scalable APIs and microservices for data-intensive applications
• Optimize system performance, reliability, and scalability
• Design efficient data models and handle complex integrations

AI & Intelligent Systems

• Implement and integrate AI-powered features into core products
• Design and build agent-based workflows for automation and decision-making
• Apply prompt engineering techniques to improve LLM outputs and behavior
• Work with modern AI frameworks to productionize intelligent systems

Cloud & Infrastructure

• Develop and deploy backend systems on AWS (EC2, S3, RDS, Lambda, etc.)
• Build resilient, scalable cloud-native services
• Contribute to system monitoring, logging, and reliability

System Design & Engineering Excellence

• Contribute to architecture, service boundaries, and system design decisions
• Write clean, maintainable, and well-documented code
• Ensure security, performance, and operational stability
• Continuously improve engineering quality and development practices

Collaboration

• Work closely with frontend, product, and AI teams
• Contribute to end-to-end feature delivery
• Participate in Agile development processes

Requirements

• 5+ years of backend software development experience
• Strong experience building and scaling backend systems in production

Core Technical Skills

• Strong experience with Java and Spring Boot
• Solid experience with Python
• Strong knowledge of SQL and database design (PostgreSQL preferred)
• Experience building REST APIs, microservices, and distributed systems
• Hands-on experience with AWS (EC2, S3, RDS, Lambda, etc.)
• Proficiency with Git and modern development workflows

AI & Modern Development Experience

• Experience with prompt engineering for LLM-based systems
• Practical experience building AI agent workflows in production
• Familiarity with frameworks/tools such as:
  • LangGraph
  • LangChain
  • LangSmith
  • or similar ecosystems
• Experience using AI-assisted development tools, such as:
  • Claude Code
  • Codex
  • OpenCode
  • or similar

Nice to Have

• Experience with vector databases or semantic search (e.g., Milvus)
• Knowledge of RAG (Retrieval-Augmented Generation) architectures
• Experience with CI/CD pipelines and DevOps practices
• Familiarity with event-driven architecture

• Experience with data processing pipelines or document AI systems

   

Why Join Us

• Work on cutting-edge AI-powered systems in a $17T industry
• Build real-world applications using LLMs, agents, and automation
• High ownership and autonomy with meaningful technical impact
• Opportunity to influence system design and engineering direction
• Fast-moving, execution-focused team with minimal bureaucracy
• Competitive compensation and flexible work environment

About Us

Smart Capital Center is an end-to-end, AI-powered platform for Commercial Real Estate (CRE) investment and financial management. We power real-time underwriting, asset management, and portfolio analytics through a combination of live data, workflow automation, and AI-driven insights.

Operating at the intersection of Generative AI, finance, and real estate, we are building systems that digitize and simplify complex financial workflows.

Our clients include leading institutions such as JLL, Pacific Life Insurance Company, and KeyBank. We are a lean, high-performance team building category-defining technology in a $17 trillion industry.

To learn more about our platform and vision, please visit our website.

The Role

We are looking for a Backend Software Engineer with strong experience in building scalable systems and a deep interest in AI-powered applications.

This is a high-impact, hands-on role where you will design and build backend services, integrate AI capabilities, and develop intelligent, agent-driven workflows used in real-world production environments.

You will work closely with product, AI, and engineering teams to deliver reliable, high-performance systems and automation features.

What You Will Do

Backend Development

• Design, build, and maintain backend services using Java (Spring Boot) and Python
• Develop scalable APIs and microservices for data-intensive applications
• Optimize system performance, reliability, and scalability
• Design efficient data models and handle complex integrations

AI & Intelligent Systems

• Implement and integrate AI-powered features into core products
• Design and build agent-based workflows for automation and decision-making
• Apply prompt engineering techniques to improve LLM outputs and behavior
• Work with modern AI frameworks to productionize intelligent systems

Cloud & Infrastructure

• Develop and deploy backend systems on AWS (EC2, S3, RDS, Lambda, etc.)
• Build resilient, scalable cloud-native services
• Contribute to system monitoring, logging, and reliability

System Design & Engineering Excellence

• Contribute to architecture, service boundaries, and system design decisions
• Write clean, maintainable, and well-documented code
• Ensure security, performance, and operational stability
• Continuously improve engineering quality and development practices

Collaboration

• Work closely with frontend, product, and AI teams
• Contribute to end-to-end feature delivery
• Participate in Agile development processes

Requirements

• 5+ years of backend software development experience
• Strong experience building and scaling backend systems in production

Core Technical Skills

• Strong experience with Java and Spring Boot
• Solid experience with Python
• Strong knowledge of SQL and database design (PostgreSQL preferred)
• Experience building REST APIs, microservices, and distributed systems
• Hands-on experience with AWS (EC2, S3, RDS, Lambda, etc.)
• Proficiency with Git and modern development workflows

AI & Modern Development Experience

• Experience with prompt engineering for LLM-based systems
• Practical experience building AI agent workflows in production
• Familiarity with frameworks/tools such as:
  • LangGraph
  • LangChain
  • LangSmith
  • or similar ecosystems
• Experience using AI-assisted development tools, such as:
  • Claude Code
  • Codex
  • OpenCode
  • or similar

Nice to Have

• Experience with vector databases or semantic search (e.g., Milvus)
• Knowledge of RAG (Retrieval-Augmented Generation) architectures
• Experience with CI/CD pipelines and DevOps practices
• Familiarity with event-driven architecture

• Experience with data processing pipelines or document AI systems

   

Why Join Us

• Work on cutting-edge AI-powered systems in a $17T industry
• Build real-world applications using LLMs, agents, and automation
• High ownership and autonomy with meaningful technical impact
• Opportunity to influence system design and engineering direction
• Fast-moving, execution-focused team with minimal bureaucracy
• Competitive compensation and flexible work environment

We are looking for a Senior Ruby on Rails Developer to join a product engineering team working on a mature, high-traffic platform with a large and well-established domain model.

Project: A long-running digital platform in the travel, hospitality, and marketplace domain. The product manages complex workflows around properties, reservations, deposits and exchanges, billing, and member onboarding. You'll work on a large Ruby on Rails application, contributing to new features, performance improvements, integrations, and the continuous evolution of the platform.

Ability to maintain several hours of overlap with the CDT time zone.
 

This is a backend-focused Rails role. You'll work primarily with Ruby on Rails, databases, background processing, APIs, and third-party integrations while contributing to a large and established codebase.
Tech Stack: Ruby, Ruby on Rails 7.x, Rails Engines, MySQL, Redis, Memcached, Solr, Sidekiq, Clockwork, ActionCable, ActiveAdmin.
Authentication & Security: JWT, CanCan, bcrypt, role-based authorization.
Integrations: Stripe, AWS S3/CloudFront/SNS, Twilio, transactional email, product analytics, feature flags, geolocation.
Testing: Minitest, RSpec, FactoryBot, VCR/WebMock, Capybara/Selenium.
 

Responsibilities:
Develop and deliver backend features using Ruby on Rails;
Work effectively with a large, established Rails codebase and make well-tested, maintainable changes;
Design and implement database changes, models, service objects, APIs, and business logic;
Develop and maintain background jobs and scheduled processes using Sidekiq and related tools;
Build and maintain integrations with third-party services such as Stripe, AWS, and Twilio;
Write and maintain automated tests, including unit, integration, and API tests;
Analyze and optimize application performance across the database, search, caching, and background processing layers;
Contribute to improving system reliability, code quality, and maintainability;
Participate in code reviews and collaborate closely with other engineers and product teams.
 

Requirements:
-5+ years of professional experience with Ruby on Rails, including production experience with large, established applications;
-Strong experience with Ruby on Rails 7.x;
-Solid knowledge of MySQL and/or PostgreSQL, including schema design, migrations, indexing, and query optimization;
-Strong experience with Sidekiq or similar background job processing tools;
-Experience building and maintaining RESTful APIs;
-Experience integrating third-party services and APIs;
-Strong testing experience with Minitest/RSpec and related testing tools;
-Experience with Git and pull-request workflows;
-Comfortable working with and improving a large, long-lived codebase;
-Good written English and clear communication skills.

Nice to Have:
Experience with JavaScript, Vue, Stimulus, or Hotwire;
Experience with HTML, CSS, and Sass;
Experience with Solr, Elasticsearch, or other full-text search technologies;
Experience with Stripe or other payment and billing integrations;
Experience with ActiveAdmin or similar admin frameworks;
Familiarity with Docker and Kubernetes;
Familiarity with CI/CD, including CircleCI or GitHub Actions;
Familiarity with AWS, particularly S3, CloudFront, or SNS;
Experience with monitoring and observability tools such as Prometheus or APM solutions;
 

We are looking for a Python Developer and OSS/BSS Integration Consulting to develop a connector for a major US telecom network automation orchestrator (OSS, Order Management, and Inventory ecosystem). The connector will serve as a mediator between the orchestration platform and a network security appliance developed by an Israeli startup and deployed in this network.

Requirements

• Proven experience in Python programming, including microservices, communication protocols, and databases.
• Background in BSS/OSS from Netcracker, Amdocs, Ciena, Salesforce, Cisco NSO is an advantage.
• Knowledge of FastAPI, REST, SOAP, and other APIs.
• Proficiency in Linux, Docker, and Kubernetes.
• Background in network automation and orchestration platform development is an advantage.
• Knowledge of network protocols (TCP/IP, BGP, OSPF, routing/switching) is an advantage.
• C1 English and strong communication & collaboration skills

We offer

• Remote work, mixed international team, cutting-edge technologies, and flexible working hours.
• The project that you are not ashamed to write about in your resume.
• High salaries and bonuses.
• Business trips to Israel (beach hotel, rented car).
• A friendly team with experienced mentors instead of bosses.

We build internal products and automation for our own teams to improve day-to-day business processes. Most tasks revolve around processing large datasets (millions of rows) and turning them into reliable, reusable outputs.

You'll work 50/50 between Python development and data work: building scripts/services and data pipelines, mainly with Pandas, plus some SQL and PySpark.

    What You'll Do

• Build internal tools and automation around data processing and reporting.
• Develop and maintain pipelines that ingest data from APIs and large files.
• Transform and validate data using Pandas; write clean, tested, maintainable Python.
• Use SQL mainly to extract data and for joins/aggregations when needed.
• Contribute to large-scale processing (PySpark/Spark) when applicable.

• Refactor and optimize existing scripts and pipelines; improve performance, readability, and reliability (tests/logging).

   

    What We're Looking For

• 2+ years of experience with Python in production.
• Strong Pandas: efficient transformations, joins/merges, memory/performance considerations.
• Solid engineering habits: tests, code review, debugging, and readable code.
• Working knowledge of SQL (MS SQL Server is our primary DB, but any RDBMS is fine).
• Comfortable with Linux and Git; daily tooling skills (e.g., VS Code).
• Excellent organizational and task management abilities.
• Self-motivated with the ability to work independently.
• Good written and spoken English communication skills.

    Nice to Have

• PySpark/Spark and/or Hadoop exposure; distributed processing concepts.
• Azure experience (storage/compute) or participation in on-prem → cloud initiatives; workflow orchestration is a plus.
• Data modeling fundamentals and basic ML understanding; а portfolio (GitHub/website) or examples of end-to-end projects/products (clean repo structure, README, tests) is a plus.

We are looking for a Senior Full Stack Engineer (Java + React) for our partner, a growing software company based in Spain.

Our partner combines product development with client-facing engineering work. They build their own products in the search and AI space while also delivering software solutions for enterprise customers.

As part of an international engineering team, you will work on a live production platform used by real customers, contributing across both backend and frontend development and playing a key role in the evolution of its architecture.

This is a full-time remote contract position with an initial commitment of at least six months and the possibility of long-term extension.

Responsibilities

• Design, develop, and maintain backend services and APIs using Java and Spring Boot.
• Develop and maintain modern frontend applications using React.
• Build and deliver end-to-end features across the backend and frontend.
• Participate in a major platform migration toward a more secure and modern architecture.
• Contribute to architectural and technical design decisions.
• Transform business requirements into scalable technical solutions.
• Improve and refactor existing systems while maintaining production stability.
• Work with AWS infrastructure and cloud-based production environments.
• Collaborate closely with QA and cross-functional teams throughout the development lifecycle.
• Participate in Agile ceremonies and planning activities.
• Use AI-assisted development tools as an integral part of the engineering workflow.

Requirements

Technical Skills

• 6+ years of professional software engineering experience.
• Strong hands-on experience with Java and Spring Boot.
• Strong hands-on experience with React and modern frontend development.
• Strong hands-on experience with AWS and building or deploying production applications in AWS environments.
• Proven experience building and maintaining production-grade APIs and web applications.
• Solid understanding of software architecture, system design, and data modeling.
• Good understanding of frontend architecture, component-based development, and API integration.
• Experience with Docker, CI/CD pipelines, and modern cloud-native development practices.
• Experience working on live products with real production workloads.

AI & Modern Engineering Expectations

• Strong hands-on experience using AI-powered development tools such as Claude Code or similar as part of the day-to-day engineering workflow.
• Up-to-date understanding of modern AI capabilities and their practical application in software development.
• Ability to use AI tools to accelerate development, improve code quality, support architectural decisions, and increase engineering productivity.
• Experience with Spec-Driven Development (SDD) or similar methodologies that enable AI-native development workflows.
• Ability to identify opportunities where AI can add meaningful value to the product and its users.
• Comfortable working in an engineering environment where AI-assisted development is an integral part of the software development lifecycle.

Communication

• English level B2 or higher.
• Ability to communicate technical concepts clearly to both technical and non-technical stakeholders.
• Strong written communication and documentation skills.
• Comfortable working within distributed international teams.

Personal Qualities

• Strong ownership mentality and proactive approach.
• Ability to identify issues early and drive solutions independently.
• Open-minded and adaptable when evaluating technologies and approaches.
• Focus on code quality, maintainability, and long-term sustainability.
• Collaborative attitude and strong teamwork skills.

We are looking for a Junior-Middle Backend Developer to join a fast-growing start-up developing a product for automated lead generation and recruitment outreach.

Responsibilities:

• Day-to-day product implementation.
• Develop integrations with AI (e.g., Perplexity, OpenAI) & 3rd party API (e.g., CRMs).
• Leverage your prompt engineering skills to maximize the outcome.
• Customer discovery. That includes: internal product conversations, as well as joining some customer calls (Maybe not from day one, but definitely later on).

Requirements:

• At least 1 year of experience working in a product company/startup.
• 1-3 years of software development experience.
• Experience with Node.js, TypeScript, JSON, REST API, Git.
• Experience in LLM/RAG, MCP, and AI agent development and prompt engineering.
• Database design and optimization (SQL).
• Development in cloud infrastructure (AWS/GCP/Azure).
• Patterns for asynchronous task processing (RabbitMQ, SQS, or similar).
• Experience with n8n/make will be a great plus.
• Excellent verbal communication skills.
• Excellent English, minimum B2 level.
• Absolutely customer-centric and flexible in a dynamic environment (i.e., fully tolerant of shifting priorities daily).

Job details:

• Full-time.
• Fully remote.
• Long-term.
• B2B contract.
• Start date — ideally ASAP, but negotiable.

What else will you get:

• Learning how a startup grows.
• Direct impact on product and company strategy.
• Deliver value directly to paying B2B clients.
• You will work with the most modern toolset (including Cursor in Agent mode).

The hiring process:

• 30-45 min pre-screen interview with a recruitment manager.
• 30 min call with the client.
• A technical deep-dive interview, most likely with online coding (conducted by the client).

Inception-1 is a product company that creates AI-driven B2C products designed to help people feel more connected and less alone. Our mission is to build meaningful digital experiences that blend technology with empathy and to prove that technology can be both human and transformative.
GetHoney is our AI-driven product, and we’re looking for a Senior Product Engineer with a strong C#/.NET background and commercial frontend experience with React or another modern JavaScript/TypeScript framework.
This is not a feature-delivery role. We’re looking for an engineer who wants to understand the user problem, challenge solutions, make technical and product decisions, ship features end-to-end, and evaluate their impact after release.
You’ll be responsible for solving complex user problems and delivering meaningful product value end-to-end — from understanding the problem and shaping the solution to implementation, deployment, and post-release analysis.

If you want to own product outcomes, not just implementation, and build with an AI-first mindset, we’d love to hear from you!
 
Must-have skills:
 

• Proven ability to own and ship user-facing product features end-to-end — from problem definition and technical decisions to release and post-launch analysis.
• Strong hands-on experience with C#/.NET and building production backend systems.
• Commercial frontend development experience with React or another modern JavaScript/TypeScript framework.
• Experience working in a product company and building software used by real customers.
• Hands-on experience integrating LLMs and AI APIs into production applications.
• Hands-on experience with agentic engineering — designing and using AI-agent workflows, coding agents, and LLM-based automation in real development processes.
• Product development skills:
  • Strong grasp of product analytics;
  • Product features design and testing experience.
• Solid system design fundamentals. 

Key responsibilities for the first 6 months:
 

• Ship 15–20 meaningful product experiments.
• Implement agile but stable solutions for engaging conversational model, voice generation, interactive calls, etc.
• Improve retention and activation metrics.
• Design and maintain an experimentation framework (A/B testing, rapid iteration).
• Work across product, design, and research to turn insights into shipped features.
• Participate in user interviews and discovery sessions.
   

What makes you successful in this role:
 

• You have a strong product mindset and take ownership from idea to impact.
• You’re comfortable working in ambiguity and early-stage environments.
• You have high emotional intelligence and empathy for users.
• You care not only about shipping fast, but about shipping the right thing.
   

What we offer:

• Flexible work schedule and remote-friendly culture.
• Online services of a corporate doctor, and after the probationary period — health insurance in Ukraine.
• 20 working days of paid vacation per year, unlimited sick leave.
• All equipment necessary for work.
• Compensation for the best courses on the market, corporate online meetups and lectures, a large library, business and management schools for employees.

As our client's data business grows, the Data Division's AI Platform Services team is building applications and platforms for customers using data in AI and ML projects. As a Senior Software Engineer, Backend, you will build the APIs, services, integrations, and data-access systems behind those products. You will help make complex data workflows reliable, secure, observable, and scalable for customer-facing and internal applications.
 

Responsibilities:
- Build and evolve reliable backend services, GraphQL and REST APIs, and integrations that power customer-facing and internal applications.
- Design and maintain clear API contracts and data-access patterns for application workflows.
- Work with relational and NoSQL databases to deliver dependable, scalable application behavior.
- Build asynchronous and event-driven processing where it improves product workflows and system resilience.
- Improve testing, observability, performance, and operational readiness for the systems you own.
- Own substantial work from implementation through deployment, production support, and incremental improvement.
- Partner with frontend engineers, product, design, and data teams to deliver useful product capabilities.
- Contribute to code reviews, shared engineering practices, and peer learning.
 

Requirements:
- Experience making significant contributions to production backend systems, APIs, or services.
- Agentic development is a core part of how you work: you use it deliberately to explore, build, and deliver projects, and can articulate the practices that make it effective.
- Strong experience with TypeScript and Python for server-side application development.
- Experience designing, building, and integrating GraphQL and REST APIs.
- Experience with relational databases such as PostgreSQL or MySQL, and NoSQL systems such as DynamoDB or Cloud Firestore.
- Experience building and operating serverless functions with AWS Lambda or Cloud Run functions.
- Experience with automated testing, debugging, and production support for distributed or service-based systems.
- Familiarity with Git-based collaboration and continuous-integration workflows.
- Strong communication skills and a constructive approach to pull-request reviews and peer mentorship.
 

Nice to have:
- Experience with GCP services such as Cloud Run and GKE for application workloads, Pub/Sub for asynchronous processing, and Cloud SQL.
- Experience with authentication, search, and cloud infrastructure.
- Experience with messaging, queues, and event-driven architectures.
- Experience building services for AI-enabled products and data-intensive workflows.
- Familiarity with observability tools and using production signals to guide performance and reliability improvements.
- Experience integrating services with external APIs and MCPs.
 

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

For our client we are looking for a Senior Software Developer, Python (80%) / Java (20%)

Key Data:

Start: 26.10.2026

End: 30.10.2027

Utilisation: fulltime / 40hrs per week

Language: English

Project:

The work covers further development of Wide-Area Monitoring Applications (Advanced Monitoring, Load Frequency Control, Power Quality), analysis and adaptation of open-source modules, and development of new modules

Skills (must-have):

at least 5 years of experience developing IT solutions in line with client IT strategy and standards, including:

Python application development with FastAPI, Kafka and Helm Charts

Java application development with Spring Boot, JDK 21+ and Maven

experience with agile methodologies (Scrum, Kanban, etc.)

Should-have:

Kubernetes, Argo CD, Protobuf, Pydantic, Grafana

electrical engineering background

experience with transmission system operators or comparable energy infrastructure companies

knowledge of SCADA, PMU, PQ, protection or fault record data

experience in critical infrastructure

strong technical documentation skills