Mobilunity

On behalf of our Client from Scotland, Mobilunity is looking for a Backend Engineer (Python / FastAPI)  - Part time

Our Client is an early-stage startup building a modular back-end platform for managing digital service workflows, combining payments, task execution, and verification into one scalable ecosystem.
At the core of the product is an escrow-like mechanism powered by Stripe, where funds are released based on predefined completion and verification conditions. Their broader vision is to create reusable, API-first infrastructure with independent modules such as payments, AI-based task completion, location verification, and image evidence handling.
They are looking for a strong Backend Engineer (Mid+ to Senior level) to take ownership of the MVP back-end architecture and implementation. This is a part-time / project-based opportunity for someone who enjoys building systems from the ground up, making technical decisions, and delivering production-ready back-end solutions.

The ideal candidate is someone who has experience building:

• Payment or fintech-related systems
• API-heavy backend applications
• Workflow/state machine-based systems
• Modular or service-oriented architectures

The role requires someone who is comfortable working independently, making architectural decisions, and delivering production-grade backend code in an MVP environment.

Requirements:

• Strong backend development experience in Python 3.12+
• Experience with FastAPI or similar modern Python web frameworks
• Proven experience designing and building RESTful APIs
• Strong understanding of system design and scalable backend architecture
• Experience with PostgreSQL (schema design, queries, migrations
• Strong experience integrating Stripe API (PaymentIntents, webhooks, refunds)
• Experience with authentication systems (JWT / OAuth2)
• Experience with Docker / Docker Compose
• Ability to implement unit and integration testing
• Strong English communication skills

Nice to have :

• Experience with SQLAlchemy / Alembic or similar ORM + migration tools
• Experience with S3-compatible storage (AWS S3, Cloudflare R2)
• Familiarity with AI integrations or external API orchestration
• Experience with event-driven or audit-logging architectures
• Exposure to geolocation or media upload systems
• Experience using or integrating MCP (Model Context Protocol)
• Experience in early-stage MVP / startup environments

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Come on board, and let’s grow together!

On behalf of our Client from the Caribbean region, Mobilunity is looking for a CIAM / Identity Architect
 

Our Client is the largest bank in the Caribbean region that serves 14 countries/territories. The aim is to transform this organization from a traditional bank into a new era of fintech, leveraging the cutting-edge of current fintech offerings.

The CIAM / Identity Architect is responsible for defining and governing the Customer Identity & Access Management architecture across digital channels, ensuring secure, scalable, compliant, and frictionless customer authentication and authorization experiences. This role owns the identity strategy for customers and external users, distinct from workforce IAM, and ensures alignment with security, privacy, regulatory, and digital transformation goals.
 

Responsibilities:
 

• Define and maintain the CIAM reference architecture spanning authentication, authorization, customer lifecycle management, consent, and identity federation.
• Design scalable identity flows for mobile apps, web experiences, APIs, and partner integrations, optimizing for usability, security, and performance.
• Own and govern identity standards and patterns, including OIDC, OAuth 2.0, SAML, FIDO2/WebAuthn, token models, and session management approaches.
• Embed privacy-by-design with consent capture, purpose limitation, data minimization, and regulatory alignment (e.g., GDPR and regional equivalents).
• Provide architectural oversight for CIAM vendors and internal identity platforms; evaluate build vs. buy; ensure interoperability and roadmap alignment.
• Define non-functional requirements and SLOs for availability, performance, fraud detection, resilience, disaster recovery, and multi-region scale.
• Act as senior design authority for CIAM-related decisions and security exceptions, balancing customer experience with risk controls.
• Partner with API, mobile, and web platform teams to align API security, token scopes, and gateway policies with zero trust principles.
• Establish identity data models and customer profile boundaries across domains; guide eventing and telemetry for identity analytics and fraud monitoring.
• Influence product roadmaps for enrollment, progressive profiling, step-up authentication, and self-service account recovery.
• Define patterns for social login, partner federation, and B2B2C scenarios, including trust frameworks and contractual controls.
   

Requirements:

• CIAM architecture: customer onboarding, identity proofing patterns, profile management, consent orchestration, MFA/step-up, account recovery.
• AuthN/AuthZ protocols: OAuth 2.0, OIDC, SAML, JWT, token lifecycles, PKCE, device authorization, dynamic client registration.
• Federation & social login: brokered identity, Just-In-Time provisioning, account linking, risk-aware social sign-in.
• API security: gateway integration, token exchange, mTLS, rate limiting, scope design, audience and resource modeling.
• Identity risk & fraud: bot and credential-stuffing defenses, device trust, anomaly/risk signals, adaptive access, and re-auth strategies.
• Privacy engineering: data minimization, consent tracking, purpose binding, right-to-access/erase, data residency, and encryption patterns.
• Architecture governance: reference models, standards catalogs, decision records, review boards, and cross-domain leadership.
• Resilience & scale: multi-region, active-active, blue/green identity changes, schema evolution, rate/latency optimization.
• Developer experience: SDK and pattern enablement, secure-by-default templates, guardrails, and documentation.
   

Certifications:

• CIAM platform architecture (e.g., Okta/Auth0, ForgeRock, Ping, Microsoft Entra External ID/Azure CIAM).
• Microsoft Entra ID identity architecture fundamentals.
• TOGAF or equivalent enterprise architecture certification.
• Data privacy training (GDPR and regional equivalents).
• OWASP Identity & API Security training (including ASVS and API Security Top 10).

Required experience:

• 8–12+ years in identity, security, or solution architecture roles.
• 4+ years designing customer-facing identity platforms at scale (high-traffic consumer or partner ecosystems).
• Experience in regulated industries such as banking, fintech, or telecommunications.
• Proven leadership driving architecture decisions across multiple digital channels (mobile, web, API/platform).
• Track record delivering measurable outcomes in conversion, fraud reduction, latency, and availability.
   

Success Measure:
 

• Improved authentication success rate and reduced account recovery friction without increasing risk.
• Adoption of reference patterns and standards across product teams; reduced custom auth code.
• Regulatory alignment evidenced by privacy controls, consent auditability, and clean audit outcomes.
   

In return, we offer:
 

• The friendliest community of like-minded IT people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program is designed to meet our team’s needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort, and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Come on board, and let’s grow together!

On behalf of our Client, a well-established financial institution from the Caribbean region Mobilunity is looking for a DevOps Solution Architect. 

Our Client is the largest bank in the Caribbean region that serves 14 countries/territories. The aim is to make this organization from a traditional bank into a new era of fintech, working on the edge of what current fintech may offer.

You will work in a fully remote, globally distributed team, collaborating closely with Product Managers, Engineers, and Business stakeholders across different time zones.

This role requires a high level of autonomy, strong product thinking, and the ability to operate in ambiguity. You will proactively shape requirements, facilitate discussions, and ensure design consistency across the product ecosystem.

We are seeking an experienced Solutions Architect — DevOps to design, implement, and lead cloud-native and hybrid solutions across AWS and Microsoft Azure. This role bridges architecture, DevOps, and platform engineering, ensuring scalable, secure, and highly available systems while enabling CI/CD, infrastructure automation, and operational excellence.

You will collaborate with engineering, security, and business stakeholders to translate requirements into robust cloud architectures and guide teams through implementation and optimization.
 

Key Responsibilities:
 

Architecture & Cloud Designural Design 

•  Design end-to-end cloud solutions leveraging AWS and Azure services, including compute, storage, networking, security, and managed services
• Define reference architectures, landing zones, and multi-account / multi-subscription strategiesEvaluate existing systems and propose architectural improvements aligned with business and technical goals.
•  Architect hybrid and multi-cloud solutions with high availability, disaster recovery, and fault tolerance
• Ensure solutions meet performance, security, compliance, and cost-optimization requirements
   

DevOps & Platform Engineering
 

• Lead the design and implementation of CI/CD pipelines using tools such as GitHub Actions, GitLab CI, Azure DevOps, or Jenkins.
•  Implement Infrastructure as Code (IaC) using Terraform, AWS CloudFormation, and Azure Bicep/ARM
• Enable containerized and orchestration platforms using Docker, Kubernetes (EKS, AKS), and related tooling
• Drive automation for provisioning, configuration management, monitoring, and deployments
   

Security, Reliability & Operations
 

• Implement cloud security best practices including IAM, network segmentation, secrets management, and encryption
• Integrate DevSecOps practices, security scanning, and policy-as-code
• Design observability solutions using CloudWatch, Azure Monitor, Prometheus, Grafana, and logging platforms
• Support SRE practices, incident response, and operational runbooks
   

Collaboration & Leadership
 

• Act as a technical leader and trusted advisor to development teams and stakeholders
• Review architectures and provide guidance on cloud-native patterns and best practices
• Participate in technical decision-making, proofs of concept, and cloud migrations
   

Required Qualifications:
 

• 10+ years of experience in cloud architecture, DevOps, or platform engineering
• Extensive hands-on experience with AWS and Microsoft Azure in production environments
• Strong expertise in Infrastructure as Code (Terraform strongly preferred)
• Experience designing and operating CI/CD pipelines at scale
• Proficiency with containerization and orchestration (Docker, Kubernetes, EKS, AKS)
• Solid understanding of cloud networking, security, and identity management
• Proven ability to translate business requirements into technical solutions
   

Preferred Qualifications:
 

• AWS Certifications (e.g., AWS Solutions Architect — Professional)
• Microsoft Azure Certifications (e.g., Azure Solutions Architect Expert)
• Experience with multi-cloud or hybrid cloud strategies
• Familiarity with service mesh, event-driven architectures, and serverless platforms
• Experience in regulated environments (finance, healthcare, government)
• Consulting or customer-facing architecture experience
   

In return, we offer:
 

• The friendliest community of like-minded IT people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program is designed to meet our team’s needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort, and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

 Come on board, and let’s grow together!

On behalf of our Client from New York, USA, Mobilunity is looking for a Senior Full Stack PHP Developer

Our client is a fast-growing company helping general contractors and agencies find, engage, and report on certified small, local, and diverse subcontractors faster, more confidently, and at scale.

Today, many contractor teams still rely on spreadsheets, email chains, and disconnected systems to find vendors, verify certifications, and manage compliance workflows. Our client is changing that.

Their platform aggregates data on thousands of vendors and uses automation and AI to help customers discover, qualify, and engage the right partners faster.

The company has raised $8M+ from leading investors, surpassed $2M+ ARR, and continues to grow rapidly. At the same time, they remain an early-stage company where engineers have real ownership, move fast, and directly influence what gets built.

We are looking for an Engineer to help build and scale the core platform.

A lot of what you will work on does not exist yet. Some of it is functionality customers are already waiting for. Some of it is infrastructure needed to support growth and reliability. Either way, you will own problems end-to-end: defining solutions, building them, shipping them, and making sure they scale.

What You’ll Work On:

• Integrations and External Data
  Connecting Tough Leaf with third party platforms public registries and external data sources so contractor teams can access reliable information without leaving the platform.
• Document Management and Validation
  Building systems to store, track and validate certifications and compliance documents including automated checks for expiration dates completeness and signatures.
• Data Infrastructure and Enrichment
  Expanding pipelines that ingest clean and enrich vendor data from multiple sources so the platform becomes a reliable source of truth.
• Core Platform Features
  Designing and shipping the tools contractors use every day including search vendor matching project tools outreach workflows and reporting.
• Scalability and Reliability
  Improving performance stability and maintainability as the platform grows in users data and complexity.

Our Stack:

• Frontend: SvelteKit, deployed on Cloudflare Pages/Workers
• Backend: PHP/Laravel (headless/API-only), running on AWS Lightsail
• Database: MySQL, PostgresSQL, Cloudflare D1 (SQLite)
• DevOps: Git/GitHub, GitHub Actions, ,Linux, NGINX, Docker/Dev Containers, Vite
• Testing: Playwright, Cypress, PHPUnit/Pest, Vitest/Mocha
• Design: Figma, Lottie, Storybook

What we’re Looking For:

• Strong full stack engineering experience with modern web applications
• Ability to take ownership of problems and ship features end to end
• Comfort working in early stage environments where priorities evolve quickly
• Experience designing clean maintainable systems that scale over time
• Strong communication and collaboration skills

Why Join:

• Early stage ownership and real product impact
• Fast product cycles with minimal bureaucracy
• Interesting technical challenges around data automation and AI assisted workflows
• Building software that directly supports real world construction projects

Mobilunity is a Ukrainian-based and operated provider of software engineering teams. Our typical clients are European, American and Japanese startups and small-to-mid sized companies working with our teams as permanent and equal extensions to their own software departments. With our collaboration model, engineers get direct access to the client’s technical management and work hand-in-hand with their peers both on the client’s side and in Ukraine. We as the Vendor ensure all non-tech questions are solved in a supportive manner. Joining Mobilunity you will get the best from both worlds – strong support and a big community locally, and an ambitious international team.

We are looking for a proactive and creative SMM Manager for full-time or part-time cooperation who knows how to:

• grow visibility and engagement on LinkedIn and Reddit;
• build recognizable voice and authority;
• generate consistent inbound interest and leads;
• create content that people actually read, save, and respond to.

Key responsibilities:

LinkedIn - 55%

• Create, publish and promote content focused on solving specific problems for clearly defined target audiences based on our actual expertise and experiences;
• Actively promote posts and Company’s profiles through thoughtful, relevant comments under industry discussions, contextual mentions of company experience where appropriate;
• Engage in high-quality commenting (no generic replies), aiming to build visibility and recognition.

Reddit - 45%

• Develop and manage our company's presence on Reddit;
• Create posts focused on experience, insights, and lessons learned;
• Write deep, relevant comments under discussions, contributing value first;
• Support long-term funnel from expertise to trust.

Main expectations: 

• 4+ years of experience in SMM / Content / Social Growth, focused on Western markets;
• Proven experience managing LinkedIn and Reddit as communication and growth channels;
• Strong understanding of how to stand out in saturated social media environments;
• Excellent written English (C1+), with the ability to write sharp, insightful, non-generic content;
• Ability to create content independently, with or without AI tools help;
• Fast execution and strong ownership mindset;
• Creative, non-standard thinking with focus on results.

Joining the team you will get:

• The friendliest community of like-minded IT-people;
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies;
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note;
• Fair salary and 100% taxes coverage – don’t worry about possible taxes raise – we will get you covered;
• The ability to work remotely or from the office in Kyiv (there is a generator and starlink for uninterrupted work);
• Comfortable working conditions in the office – no open spaces, separate rooms for the comfort of each team and several rest;
• Corporate events, numerous interest groups.

Recruitment process stages:

1. Interview with Recruiter;
2. Providing a portfolio or links to topics you are proud of / Test Task;
3. Interview with CEO.

COME ON BOARD, AND LET’S GROW TOGETHER!

On behalf of our Client from USA, Illinois, Mobilunity is looking for a D365 Tech Consultant / System Administrator (Release & Upgrade Specialist).

Our Client is a U.S.-based hardware and software company founded in 1988 by Larry O’Connor. It is best known for storage, memory, connectivity, and upgrade products for Mac, PC, and creative workflows, with a brand position built around performance, reliability, and extending the useful life of technology.

You will be the person responsible for overseeing, managing and planning smooth Dynamics system updates, which includes full preparation, release management and further troubleshooting.

Requirements:

• 3+ years of experience with Dynamics 365 ecosystem
• Experience with Dynamics 365 F&O module
• Hands-on experience in managing Dynamics updates, including at least 2-3 end-to-end production or near-production upgrade cycles
• Deep understanding of Dynamics integrations with third-party systems, including hands-on troubleshooting of APIs, middleware, and data flow issues during upgrades
• Ability to perform security audits inside the system and integrations involved
• Strong knowledge of Dynamics system administration, customization, and configuration
• Experience with LCS (Lifecycle Services), including environment management, deployments, and update lifecycle handling
• Experience working with ISV solutions in Dynamics 365, including handling version compatibility and upgrade-related issues

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Mobilunity is a Ukrainian-based and operated provider of software engineering teams. Our typical clients are European, American and Japanese startups and small-to-mid sized companies working with our teams as permanent and equal extensions to their own software departments. With our collaboration model, engineers get direct access to the client’s technical management and work hand-in-hand with their peers both on the client’s side and in Ukraine. We as the Vendor ensure all non-tech questions are solved in a supportive manner. Joining Mobilunity you will get the best from both worlds - strong support and a big community locally, and an ambitious international team.

We are extending our in-house Online Marketing Team and looking for a talented Senior SEO Specialist to join our team.

Main responsibilities:

• Conduct SEO optimization of the company's main website;
• Develop and implement long-term and short-term SEO experiments for the website;
• Collaborate with and coordinate content writers to update and improve content on the website;
• Conduct thorough competitor analysis and search for link opportunities, organize those utilization through link building team;
• Collect data and report on traffic, rankings and other SEO aspects;
• Optimize visibility for AI-generated answers and LLM-based search engines.

Main requirements:

• Have at least 4 years of experience on a similar SEO position (preferably in IT service companies);
• Have a proven record of past SEO campaigns, be ready to tell about such cases;
• Have at least Upper-Intermediate level of English;
• Have in-depth understanding of SEO principles and approaches;
• Be hands-on in various types of linkbuilding including outreach, crowd marketing, broken linkbuilding and more;
• Have experience in working with Google Analytics, Search Console, Ahrefs, SEMRush, ScreamingFrog;
• Be a master of Google Excel formulas;
• Be able to think creatively and have huge desire to experiment;
• Have analytical skills to forecast and identify trends and challenges;
• Be proactive, independent, attentive to details and extremely responsible.

Joining the team you will get:

• The friendliest community of like-minded IT-people;
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies;
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note;
• Fair salary and 100% taxes coverage – don’t worry about possible taxes raise – we will get you covered;
• The ability to work remotely or from the office in Kyiv (there is a generator and starlink for uninterrupted work);
• Comfortable working conditions in the office – no open spaces, separate rooms for the comfort of each team and several rest;
• Corporate events, numerous interest groups.

COME ON BOARD, AND LET’S GROW TOGETHER!

On behalf of our Client from the UK, Mobilunity is looking for a Full Stack Developer (Node.js / Vue.js).

Our Client is a fast-growing SaaS company operating in the telecom and subscription billing space. Their platform supports billing operations for telecom providers and service companies, focusing on reliability, scalability, and continuous product growth.

They are looking for a Full Stack Developer with strong hands-on experience across both backend and frontend. You will work on building new features, improving existing functionality, and supporting integrations across a modern, cloud-oriented platform.

This is a hands-on role with significant ownership across the full stack — from UI and APIs to event-driven services and data.
 

Responsibilities:
Full Stack Development

• Design, build, and maintain platform components using Node.js, TypeScript, and Vue.js (Nuxt)
• Deliver features end-to-end, from design to production
• Work across backend services, APIs, and frontend interfaces
• Troubleshoot and resolve complex production issues
• Deliver clean, reliable, and maintainable solutions

Architecture & System Design

• Apply API-first and cloud-first principles
• Build and maintain RESTful APIs and event-driven systems (queues, workers, webhooks)
• Contribute to system evolution from legacy solutions to cloud-native architecture
• Balance performance, cost, and scalability in technical decisions

Code Quality & Engineering Practices

• Follow best practices and coding standards
• Contribute to unit and integration testing
• Participate in code reviews and CI/CD processes
• Ensure long-term maintainability of the codebase

DevOps & Collaboration

• Work with Docker-based and Linux environments
• Collaborate with DevOps on CI/CD pipelines (GitHub Actions or similar)
• Support cloud infrastructure (AWS services such as ECS, Lambda, SQS, RDS)
• Improve development workflows across environments
   

Requirements:

• 4–7 years of commercial full stack development experience
• Strong experience with Node.js and TypeScript
• Solid frontend experience with Vue.js / Nuxt (or similar frameworks)
• Experience with REST APIs and event-driven architectures
• Experience with Git workflows, pull requests, and CI/CD
• Familiarity with Docker and Linux environments
• Experience with relational databases (MySQL or similar)
• Ability to work independently and manage priorities
• Good spoken and written English
   

Nice to have :

• Experience with AWS (ECS, Lambda, SQS, RDS/Aurora)
• Experience with legacy technologies such as PHP or Perl
• Experience with Oracle databases
• Python knowledge
• Experience with SaaS platforms or multi-tenant systems
• Familiarity with testing frameworks (Jest, Vitest, etc.)
   

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups
   

Come on board, and let’s grow together!

On behalf of our Client from the UK, Mobilunity is looking for a DevOps Engineer

Our Client is a fast-growing SaaS company operating in the telecom and subscription billing space. Their platform supports billing operations for telecom providers and service companies, focusing on reliability, scalability, and continuous product growth.

We are looking for a hands-on DevOps Engineer to contribute to the reliability, scalability, and
automation of our platform and delivery processes. The focus is on building, improving, and
operating services through code and automation — supporting consistent deployments and stable
environments, while working closely with development teams in alignment with Tekton’s technical
strategy.
This is a role for someone who prioritises automation over manual intervention, takes ownership of
assigned systems, and has the proactivity to identify and resolve issues before they become
problems.

Core Responsibilities
CI/CD Pipelines
• Build, maintain, and improve pipelines (AWS CodePipeline / CodeBuild / CodeDeploy or
equivalent) to support reliable and repeatable deployments
• Work with development teams to improve deployment processes and environment
consistency
Automation & Scripting
• Write and maintain Python and shell scripts to reduce manual tasks and improve operational
efficiency
• Prioritise infrastructure as code and automation approaches over manual intervention
AWS & Hybrid Infrastructure
• Operate and optimise workloads across AWS (ECS, EC2, RDS/Aurora, S3, IAM, VPC)
• Support existing Vinters data centre environments and maintain consistency between cloud
and on-premise workloads
• Contribute to infrastructure as code using Terraform and/or CloudFormation
Containerised Environments
• Build and support Docker-based and Linux containerised environments
• Help provide tooling, scripts, and guidance that enable developers to deploy and operate
services in test environments
Monitoring, Observability & Reliability
• Contribute to system observability using CloudWatch, Prometheus, and Grafana, ensuring
visibility into system health
• Assist in troubleshooting incidents, identifying root causes, and implementing fixes
• Support reliability and performance improvements across platform infrastructure
Security & Compliance
Confidential – For Recruitment Partners Only | Page 1

Tekton Billing | DevOps Engineer (AWS / CI/CD / Automation) – Remote
• Apply security and operational standards across infrastructure and pipelines
• Contribute to knowledge sharing and documentation, avoiding knowledge silos
Skills & Experience

• 5+ years of experience in DevOps, infrastructure, or platform engineering
• Hands-on experience with AWS services: ECS, EC2, RDS/Aurora, S3, IAM, VPC
• Experience building and maintaining CI/CD pipelines
• Strong scripting skills in Python and/or Bash
• Experience with Docker and Linux-based containerised environments
• Solid understanding of monitoring, logging, and alerting
• Ability to troubleshoot and resolve issues independently
• Good written and spoken English; able to collaborate asynchronously across time zones
Desirable
• Infrastructure as Code experience — Terraform and/or CloudFormation
• Exposure to hybrid environments (cloud + on-premise)
• Experience with Ansible or other configuration management tools
• Familiarity with Node.js and backend environments (PM2 or similar)
• Experience with security or compliance standards (e.g. ISO 27001)
• Familiarity with Grafana and Prometheus for observability

English: B2-C1

On behalf of our Client – a UK-based technology company specializing in transport retail and digital ticketing platforms — Mobilunity is looking for a Senior DevOps (AWS) Engineer (EU based only).

Our client partners with leading transportation operators to deliver innovative digital ticketing systems, scalable SaaS platforms, and customer-facing applications. Their solutions enhance passenger experience while enabling modern retail capabilities across rail and wider transport networks.

Mobilunity is seeking a Senior DevOps(AWS) Engineer to support our client’s cloud-native infrastructure and platform reliability initiatives. You will design, implement, and maintain highly scalable AWS environments, build infrastructure-as-code platforms, and develop automation tooling that enables secure, resilient, and efficient engineering operations.

Responsibilities:

• Design and manage AWS production-grade cloud environments
• Implement scalable containerized workloads using ECS and Fargate
• Build and maintain Terraform-based infrastructure (module-driven architecture)
• Develop automation tooling using Python (boto3) and Bash scripting
• Design secure networking architectures including VPCs, subnets, routing, and load balancing
• Implement CI/CD pipelines using GitHub Actions and Git-based workflows
• Ensure monitoring, logging, and security across infrastructure (CloudWatch, GuardDuty, WAF)
• Support database operations including RDS (Multi-AZ), DynamoDB, and DMS migrations
• Implement disaster recovery and resilience strategies
• Collaborate closely with engineering teams to improve deployment reliability and operational efficiency

Must have skills:

• VPC, subnets, NAT gateways, and route tables
• ECS and Fargate architecture and scaling patterns
• Application Load Balancer (ALB) and CloudFront
• RDS (Multi-AZ deployments, backups, performance tuning)
• DynamoDB
• IAM (advanced policy design)
• AWS WAF, GuardDuty, and CloudWatch
• AWS Step Functions
• AWS Database Migration Service (DMS)
• AWS disaster-recovery design and implementation

Infrastructure as Code

• Advanced Terraform experience with reusable module design
• Remote state management using S3 and DynamoDB locking
• Git-based infrastructure workflows

Containers

• Strong Docker experience
• Container logging, troubleshooting, and debugging
• ECS architecture design and operational management

CI/CD

• GitHub Actions pipeline development and optimization
• Git workflows and branching strategies
• Experience with Amazon ECR

Networking

• Secure subnet and network segmentation architecture
• TLS/SSL certificate lifecycle management (ACM)
• DNS management using Route 53
• Load balancing strategies and traffic routing

Programming & Scripting (Mandatory)

• Python (mandatory): automation, boto3, Lambda tooling, internal platform tooling
• Bash scripting (mandatory): CI/CD scripting, automation, operational tooling
• Strong ability to build internal automation and developer productivity tools

Nice to have skills:

• Multi-region AWS infrastructure experience
• Observability platform design and SRE practices
• Experience supporting high-availability production systems
• Experience working with distributed international engineering teams

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the widest variety of modern technologies
• Mobilunity Medical Insurance program designed to meet our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Never-ending fun: sports events, tournaments, music band, multiple affinity groups

🐳 Come on board, and let’s grow together! 🐳

On behalf of our Client from France, Mobilunity is looking for a Backend Developer.

Our Client is building a new digital product focused on ticketing solutions for the entertainment industry. The platform enables users to easily discover, purchase, and manage tickets for various venues such as clubs, concerts, and other live events.

The product is designed to provide a seamless booking experience, allowing users to access events, manage reservations, and interact with venues in real time. At the same time, it empowers businesses to efficiently manage ticket sales, optimize attendance, and build direct relationships with their audience.

This is a greenfield project aimed at rebuilding the service from scratch using modern technologies and scalable architecture.

Their goal is to create a leading platform in the entertainment space, helping venues and event organizers deliver a smooth and engaging digital experience, while increasing customer loyalty and operational efficiency.
 

Requirements:

Backend:
 

• Strong experience with PHP 8.2+ (typed properties, enums, readonly classes, attributes, fibers)
• Solid knowledge of Symfony 7 (Messenger, Doctrine ORM, DI Container, Security, Twig)
• Experience with MySQL / Doctrine DBAL, including complex queries, indexing, EXPLAIN, and transaction management
• Hands-on experience with Docker / Docker Compose
• Confident use of Git workflows (pull requests, code reviews)
   

Architecture & Engineering:
 

• Practical experience with DDD (bounded contexts, aggregates, value objects, domain events)
• Strong understanding of Hexagonal Architecture (Ports & Adapters)
• Experience with CQRS (commands, queries, handlers)
• Hands-on experience with event-driven architecture (async processing, event listeners)
• Solid understanding of SOLID principles and clean code practices
   

Frontend (basic knowledge):
 

• Basic experience with React and Next.js (ability to read and modify existing components)
• Working knowledge of TypeScript
• Familiarity with Zustand
• Ability to work with Tailwind CSS
• Experience with Twig
   

AI:
 

• Experience using AI coding assistants (e.g., Claude Code)
• AI-assisted code generation, testing, and documentation
• Ability to review and validate AI-generated output

In return we offer:
 

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Come on board, and let’s grow together!

On behalf of our Client from the Caribbean region, Mobilunity is looking for an Entra Identity Engineer.
 

Our Client is the largest bank in the Caribbean region that serves 14 countries/territories. The aim is to transform this organization from a traditional bank into a new era of fintech, leveraging the cutting-edge of current fintech offerings.

The Entra Identity Engineer implements, configures, and operates Microsoft Entra ID capabilities for workforce, privileged, application, and hybrid identity scenarios. This is a hands-on engineering role focused on secure, resilient identity operations and integration with cloud and on-prem systems.

Responsibilities:

• Implement and manage Microsoft Entra ID tenants, users, groups, roles, and directory settings
• Configure MFA, Conditional Access, Identity Protection, and RBAC policies with least-privilege and break-glass controls
• Integrate Entra ID with on-prem directories for hybrid identity (Azure AD Connect / Cloud Sync), including sync rules and writeback
• Secure service principals, managed identities, and app registrations (certificates/secrets governance, permissions consent, token lifetimes)
• Support identity components for cloud migrations and modern authentication (deprecate legacy auth, enable device compliance and SSO)
• Troubleshoot authentication, authorization, and token-related issues across apps, devices, and protocols
• Enable and support identity requirements for cloud platforms and applications (Azure, M365, SaaS, custom apps, APIs)
• Automate routine operations with PowerShell and/or GitHub Actions/Azure Automation (policy deployment, user lifecycle, access reviews)
• Implement monitoring, alerting, and incident response using Entra logs, sign-in risk, audit trails, and SIEM integrations
• Partner with security, compliance, and application teams to meet regulatory and audit requirements.

Requirements:

• Microsoft Entra ID (Azure AD) administration and troubleshooting across tenants and enterprise-scale environments
• Conditional Access, MFA, Identity Protection policy design, testing, and safe rollout strategies
• Hybrid identity patterns and tooling (Azure AD Connect / Cloud Sync, Pass-through Authentication, Seamless SSO)
• OAuth2 / OIDC token handling and claims mapping; understanding scopes, consent, and grant types
• PowerShell & automation for identity operations (MSOnline/AzureAD/Microsoft Graph modules)
• Monitoring and log analysis for identity events (sign-ins, audit, risky users/sessions, service principals)
• Privileged Identity Management (PIM) configuration, approval workflows, just-in-time access, and access reviews
• Solid understanding of RBAC, directory roles, admin unit scoping, and least-privilege design
• Working knowledge of device-based access (Intune compliance, device registration/Join, FIDO2/Windows Hello for Business)
• Microsoft Certified: Identity and Access Administrator Associate
• Microsoft Entra ID security and governance training
• Azure security fundamentals (e.g., network basics, Key Vault, Defender for Cloud)
• PowerShell automation training and scripting best practices
• Basic OAuth/OIDC protocol training and token troubleshooting

 Experience required:

• 4–7 years in identity or cloud engineering roles
• Hands-on experience with Entra ID in enterprise or regulated environments
• Experience supporting MFA rollouts and secure application access at scale
• Exposure to cloud migration or hybrid identity deployments
• Operational experience supporting identity platforms in production with on-call participation

Success Measure:

• Reduction in risky sign-ins and identity-related incidents
• On-time, low-friction rollout of Conditional Access and MFA policies
• Mean time to resolution (MTTR) for identity incidents consistently trending down
• Automation coverage for routine identity tasks and policy deployments
• Positive audit outcomes for identity controls and privileged access

In return, we offer:

• The friendliest community of like-minded IT people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program is designed to meet our team’s needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort, and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification

• Neverending fun: sports events, tournaments, music band, multiple affinity groups

   

Come on board, and let’s grow together!

On behalf of our Client from France, Mobilunity is looking for a Full-Stack Developer.

Our client is a table management software and CRM that enables restaurant owners to welcome their customers easily. The app is useful to manage booking requests and register new bookings. You can view all your bookings, day after day, wherever you are and optimize your restaurant’s occupation rate. Our client offers a commission-free booking solution that guarantees freedom above all. New technologies thus become the restaurateurs best allies for saving time and gaining customers while ensuring a direct relationship with them.

Their goal is to become the #1 growth platform for Restaurants. They believe that restaurants have become lifestyle brands, and with forward-thinking digital products, restauranteurs will create the same perfect experience online as they already do offline, resulting in a more valuable, loyalty-led business.

Responsibilities:

• Develop and enhance features related to direct-to-consumer guest app
• Build and maintain cross-platform application
• Investigate, diagnose, and resolve application-related issues
• Collaborate within a superstar team to deliver new features to clients on a regular basis
• Collaborate with the Product Manager, Designer and Fullstack Lead to design mobile features: real time availability, reservation flows, favorites & filtering
• Implement new screens and services in React Native (Expo) and corresponding endpoints in NestJS
• Troubleshoot production issues, optimize performance and ensure high availability of both B2B and B2C systems
• Contribute to CI/CD configuration and best practices for seamless cross team deployments
• Participate in code reviews and mentoring to maintain engineering excellence across the squad

Requirements:

• 5+ years experience in a software development
• Strong sense of ownership and proactivity
• Proven experience developing web and/or mobile cross platform applications
• Proven experience working in Agile environment
• Very strong experience in HTML, CSS, Typescript, React, React Native
• Proficiency in Node.js, with experience on NestJS
• Solid knowledge of SQL
• First exposure to using Claude Code or other AI tools to drive development
• Previous experience working with PM/Design to prototype and validate features quickly
• Experience with version control systems (e.g., Git)
• Excellent problem-solving skills
• Strong verbal and written communication skills for effective collaboration with internal teams
• Upper-intermediate to advanced English proficiency

Nice to have:

• Experience using Expo / Expo Router
• Knowledge of cloud infrastructure (AWS)
• Experience with Docker
• Experience working on design systems
• Experience with TamagUI
• Experience with Mobx / zustand
• Prior work in marketplaces or consumer apps with booking, payments, or loyalty features

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups

Come on board, and let’s grow together!

Part-time, 3-4 hours a day

No need for the US time overlap, but should be available for meeting from 9 AM – 12 PM ET

On behalf of our Client from USA, Mobilunity is looking for a Senior Data Scientist

We are looking for a Senior Data Scientist with expertise in Large Language Models (LLMs) and
Generative AI to lead the design and delivery of end-to-end AI systems that generate
high-quality insights from complex unstructured datasets. This role requires strong ownership
across the full lifecycle from data preparation and model fine-tuning to RAG pipeline architecture
and scalable deployment on AWS.

Key Responsibilities:

• Architect and implement end-to-end LLM-based solutions for insight generation and
  automation
• Lead the design and optimization of Retrieval-Augmented Generation (RAG) pipelines,
  including ingestion, chunking strategies, embedding generation, indexing, and retrieval tuning
• Fine-tune, evaluate, and optimize LLMs using advanced techniques (e.g., instruction tuning,
  LoRA)
• Define and enforce best practices for data preprocessing, cleaning, normalization, and
  transformation across diverse data sources
• Provide hands-on guidance and code/data reviews for existing data scientists
• Help the team develop practical intuition for LLM fine-tuning and evaluation
• Establish simple, repeatable workflows for experimentation and iteration
• Prevent over-engineering and ensure focus on business outcomes
• Design scalable and cost-efficient AI/ML solutions leveraging AWS services
• Own the development of vector search infrastructure and embedding pipelines
• Establish robust evaluation frameworks for LLM outputs (accuracy, relevance, hallucination reduction)
• Collaborate cross-functionally with engineering, product, and business stakeholders to
  translate requirements into AI solutions
• Drive MLOps best practices including versioning, monitoring, CI/CD, and performance
  optimization
• Ensure data governance, security, and compliance in all AI workflows

Required Skills & Qualifications:

• Master’s or PhD in Computer Science, Data Science, Machine Learning, or related field (or equivalent experience)
• 3+ years of experience in data science, machine learning, or applied AI roles
• Experience mentoring or leading data scientists in applied ML/LLM projects
• Proven experience designing and deploying LLM-based solutions in production
• Hands-on experience fine-tuning open-source LLMs (Llama, Mistral, Qwen)
• Experience with LoRA / QLoRA approaches
• Ability to work with limited datasets and iterate quickly
• Strong understanding of trade-offs between model size, cost, and performance
• Strong expertise in RAG architectures and semantic search systems
• Deep understanding of NLP, embeddings, and transformer-based models
• Advanced proficiency in Python and ML frameworks (e.g., PyTorch, TensorFlow)
• Hands-on experience with vector databases (e.g., FAISS, Pinecone, OpenSearch, Weaviate)
• Strong experience with AWS ecosystem (e.g., S3, SageMaker, Bedrock, Lambda, EC2, Step
  Functions)
• Experience building scalable data pipelines and distributed systems
• Solid understanding of API design, microservices, and system integration

Mandatory skills:

real production experience with LLM
RAG pipelines (end-to-end)
fine-tuning (LoRA / QLoRA)
vector DB (FAISS / Pinecone / etc.)
AWS (S3, SageMaker, etc.)

Preferred Qualifications:

• Experience with RLHF, prompt optimization, and evaluation frameworks for LLMs
• Experience with real-time or streaming data pipelines
• Knowledge of cost optimization strategies for LLM workloads

English: B2